CONTACTS

RESISTANCE WELDING PRODUCTS METALS

WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

APPLICATION AND DATA SHEETS

CMW Copper Base Alloys 4
ELKONITE ®, ELKON®, ANVILOY ® Materials 5
IRREGULAR ELECTRODES
Metric Conversions Inches to Millimeter 6
Taper Dimensions 7 Crank 18
CMW and RWMA Straight Electrode coding 7
Holder and Electrode application sketches 28 Spade 19
Multispot Pressure Equalizing Holder Set-ups 41
Welding Bar and Rod Stock 48 Gun 19
ELKONITE ® Bar Stock 49
GCAP® Weld and Stepper Schedule 51
Spot Welding Schedules for Low Carbon Steel 52 STUD AND NUT ELECTRODES
Projection Welding Schedules for Low
Carbon Steel 53 Chameleon/Max-Life™
Welding Schedules for Stainless Steel 54 Nut Electrodes 20
Welding Schedules for Galvanized Low
Carbon Steel 55 Chameleon/Max-Life™
Recommended Electrode Materials 56 Stud Electrodes 21
Resistance Welding Electrode Maintenance 57
Self-Piloting
Welding Electrode Evaluation Form 58
Nut Electrodes 22
Graph Facsimile 59
Do’s and Don’ts for Resistance Non Piloting Nut
Welding Electrodes 60 Electrodes 23

CAP ELECTRODES, GCAPS ®, AND SHANKS Stud or Pin

Electrodes 24
Cap Electrodes 8
Cooling Jackets for
Stud and Nut
GCAP® Electrodes 9 Electrodes 24

Cap Shanks 10, 11

BACK-UP ELECTRODES

STRAIGHT ELECTRODES Dome and Pointed Swivel Head 25

Nose 12
Large Round Head
Flat and Offset CMW ® 3 and
Nose 13 ELKONITE ® FACED 25

Truncated, Radius, Square and

and 30o Nose 14 Rectangular Head 25

Elkon® & Elkonite®

Faced Nose 14
SOCKET OR BUTTON ELECTRODES
37
BENT ELECTRODES “NU-TWIST”® ELECTRODES
Single and Radius
37
Bend 15

Double Bend 16,17

2 Specifications subject to change without notice.

NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

THREADED ELECTRODES Dual Mounted

Hydraulic
“Nu-Twist” ®
26
Assemblies 39

900 Series Light

HOLDER TO ELECTRODE ADAPTERS Universal Holders
for Socket
Electrodes 42
Non Ejector 27
950 Series Paddle
Ejector 30 Holders for Socket
Electrodes........ 42
Assembly
Examples 29,30,31,33

Universal ........... 35 LOW INERTIA HOLDERS

ELECTRODE HOLDERS
100 Series Straight 1100 Series
Non Ejector 29 Adjust-A-Pressure
Low Inertia Holders 40

200 Series Straight

1150 Series
Ejector 30
Adjust-A-Pressure
Adapters 40
300 Series
Premium Straight
Ejector 31
MULTISPOT ADAPTERS FOR AIR OR
400 Series HYDRAULIC PISTONS
Light Non-Ejector
1200 Series
Offset 32
Multi-Spot Adapters 44

500 Series
Welder Contactors 44
Heavy Duty Ejector CONTACTORS
Offset 33

600 Series Universal

Holders 34 ACCESSORIES
600 Series Cap Electrode
Universal Holder Extractor Fork 45
Components 35
Reamers, Hose
Platen Mounted Connectors, and
Holders 43 Hose Clamps 45

Pneumatic
800 Series
Electrode Dresser
“Nu-Twist” ® and Cutters 46,47
Surface and
Threaded Adapters 36 Hand Electrode
Dressers 47
Hydraulic Equalizing
Adapters for Force Gauge 50
800 Series 38

ORDER BY CMW PART NUMBER ONLY 3

 CONTACTS
COPPER BASE ALLOYS METALS
WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

Long electrode life is of paramount importance to the CMW electrodes are fabricated from alloys selected
user of resistance welding equipment. Selection of the from the results of laboratory and practical field tests.
proper CMW alloy or combination of alloys will help to For special problems, CMW engineers will make recom-
give improved weld strength and electrode life. mendations based on their years of experience.

Typical Physical and Mechanical Properties of CMW® Copper Based Alloys

R.W.M.A. Electrical Ultimate Permanent Softening
CMW Alloy Hardness Conductivity Tensile Elongation Begins at
oC oF
ALLOY Condition Principal Elements Class # Number Rockwell %I.A.C.S. Strength, psi % in 2"

CMW® 28 Wrought** Copper, Zirconium 1 1.15000 70 B 90 66,000 10 500 930

Cast 70 B 80 50,000 20 500 930
CMW® 3 Wrought*** Copper, Chromium 2 2.18200 83 B 85 75,000 15 500 930
Copper, Chromium,
CMW® 328 Wrought*** Zirconium 2 2.18150 83 B 85 75,000 15 500 930
Wrought Copper, Nickel, 3 94 B 48 100,000 13 455 850
CMW® 353 Cast Silicon, Chromium 3 3.18000 90 B 48 85,000 10 455 850
Copper, Nickel,
CMW® 100 Wrought Beryllium 3 3.17510 100 B 48 110,000 10 455 850
Cast 38 C 20 110,000 2 375 710
CMW® 73 Wrought Copper, Beryllium 4 4.17200 38 C 23 170,000 4 375 710
ELKALOY® D Cast Copper, Aluminum 5 5.95300 92 B 13 85,000 15 620 1150
Cast 30 B 95 25,000 50 200 390
Copper Wrought Pure Copper — 40 B 100 40,000 35 200 390

CMW® DSC Wrought Copper, Al2O3 20 — 75 B 85 54,000 25 800 1475

Note: All properties shown are TYPICAL and should not be used for specifications
* Cold drawn bars up to 1" diameter
** Cold drawn bars up to 5/8 " diameter
*** Heat treated and cold drawn bars up to 1" diameter

TYPICAL USAGE

CMW® 28 material is recommended for spot welding CMW® 100 material is recommended for spot and
of coated steels and high conductivity materials, exclud- seam welding stainless steel and high temperature heat
ing copper and silver. resisting alloys requiring high weld forces, flash welding
dies, back-up bars, projection welding electrodes, and
CMW® 3 material is recommended for spot and seam
high strength, high conductivity electrical components
welding cold and hot-rolled steels and coated materials
and springs.
as well as current carrying shafts and arms, back-up
bars for both resistance and arc welding and electrical CMW® 73 material is recommended for flash welding
current carrying structural parts and springs. dies, springs, electrical components, high strength back-
ing material for brazed assemblies and wire guides.
CMW® 328 material is recommended for spot and
seam welding cold and hot rolled steels. There is some ELKALOY® D material is recommended for butt and
evidence that CMW® 328 outperforms CMW® 3 material flash welding dies and clamps for cold rolled and stain-
when welding coated or galvanized steels. less steel, current carrying structural parts, jigs and
fixtures, pickling racks and baskets.
CMW® 353 material is recommended for heavy duty
offset holders, back-up bars, flash welding dies, current CMW® DSC material has exceptional resistance to
carrying structural members, shafts and bushings in deformation when welding, and is highly recommended
combination with CMW® 3. as welding caps for welding coated and galvanized
steels. It allows a stable start-up, and generally outlasts
other cap materials when welding parameters are not
carefully controlled. The material requires upset cold
work to develope its properties, and is therefore only
available as caps or cap blanks.

4 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
ELKONITE®, ELKON® AND ANVILOY® MATERIALS METALS
WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

ELKONITE® is the registered trade mark of CMW electrical upsetting, electroforging and mash welding
used to identify a group of metal compositions whose applications.
elements consist basically of the refractory metals
ELKONITE® material is also used successfully as
tungsten, molybdenum and tungsten carbide combined
facing on spot welding electrodes where heat balance or
with copper. Combinations of these elements produce
mechanical wear resistance are required. The initial
dense, hard metals of superior wear resistance and
premium cost of ELKONITE® material is offset by lower
strength at elevated temperatures, coupled with good
production cost per weld due to long die life and less
thermal and electrical conductivity. The mechanical and
electrode dressing time. The high stability of ELKONITE®
physical properties of the ELKONITE® materials make
material insures uniform heating and prevents misalign-
them particularly suitable as the die inserts and facings
ment, resulting in a higher quality weld.
for volume projection welding, flash and butt welding,
Typical Physical and Mechanical Properties of CMW® Refractory Based Materials
R.W.M.A. Electrical Ultimate Cross Breaking
CMW Group B Hardness Conductivity Tensile Strength
GRADE Type of Material Class # Material Rockwell %I.A.C.S. Strength, psi psi
ELKONITE® 1W3 Tungsten-Copper 10 10.74450 77 B 53 63,000 110,000
ELKONITE® 3W3 Tungsten-Copper — 90 B 50 75,000 130,000
ELKONITE® 5W3 Tungsten-Copper — 95 B 48 85,000 140,000
ELKONITE® 10W3 Tungsten-Copper 11 11.74400 98 B 45 90,000 150,000
ELKONITE® 30W3 Tungsten-Copper 12 12.74350 103 B 41 98,000 170,000
ELKONITE® 3W53 Tungsten-Copper Alloy — 105 B 30 120,000 180,000
ELKONITE® 10W53* Tungsten-Copper Alloy — 109 B 28 160,000 200,000
ELKONITE® TC5 Tungsten Carbide-Copper — 94 B 45 70,000 140,000
ELKONITE® TC10 Tungsten Carbide-Copper — 100 B 42 75,000 160,000
ELKONITE® TC20 Tungsten Carbide-Copper — 37 C 30 85,000 180,000
ELKONITE® TC53* Tungsten Carbide-Copper Alloy — 47 C 18 150,000 220,000
ELKON® 100W Tungsten 13 13.74300 39 C 30 150,000 200,000
ELKON® 100M Molybdenum 14 14.42300 90 B 30 80,000 120,000
ANVILOY® 1150** Tungsten-Nickel-Iron-Molybdenum — 34 C 13 140,000 280,000

Note: All properties shown are TYPICAL and should not be used for specifications
* Properties are in fully heat treated condition
** Hardness is 56 HRA at 1475 oF (800oC)

TYPICAL USES
®
ELKONITE 1W3 and 3W3 alloys are generally used for ELKONITE® TC20 and TC53 materials are extremely hard
flash and butt welding die inserts where higher electrical and and wear resistant. ELKONITE® TC20 material, while some-
thermal conductivity is necessary and where a degree of what difficult to machine, may be machined using carbide
malleability is desirable. These materials are also used for tipped tools. ELKONITE® TC53 material is a heat treatable
spot welding (as a radius faced electrode) low conductivity grade of such high hardness that machining operations are
ferrous metals such as stainless steel. impractical and the material must be ground. Such ELKONITE ®
ELKONITE® 5W3 and TC5 alloys are normally used for light materials are customarily used for special applications of
duty projection welding dies where welding pressures are not electrical upsetting and electroforging.
extreme. ELKON® 100W is extremely hard and its ductility is rela-
ELKONITE ® 10W3 alloy is used for electrode and die tively low. It cannot be machined but may be ground to the
inserts in most flash and butt welding dies and for projection required shape. It does not alloy appreciably with nonferrous
welding dies where welding pressures are moderate. It is also materials and is used for cross-wire welding of metals such as
used for light electrical upsetting, electroforging dies and copper and brass. It is also used for electrobrazing electrode
seam welder bushing inserts. material and for some electrical upsetting operations.
ELKONITE® 30W3 and TC10 alloys are recommended for ELKON® 100M is used principally for electrobrazing elec-
volume projection welding dies where the pressures involved trode material and for cross-wire welding of nonferrous met-
are relatively high. Electrical upsetting of non-ferrous metals als. It is not as hard as ELKON® 100W material and may be
and low carbon steel is usually accomplished by the use of machined or drilled to fit the parts to be joined. A typical
such ELKONITE ® materials as die facings. Cross-wire weld- application of this material, as an electrode, is the welding or
ing of large, diameter wire and rod is accomplished with such brazing of braided or solid copper conductors to ferrous or
ELKONITE® materials. nonferrous terminals, lugs or fittings.
ELKONITE® 3W53 and 10W53 are heat treatable grades of ANVILOY® 1150 material is used in electrobrazing appli-
ELKONITE® materials supplied in the fully heat treated con- cations where heat balance is important. The ANVILOY® 1150
dition. If silver brazed to a die backing, such ELKONITE ® material also has good anti-sticking qualities and good high
materials should be heat treated after brazing. These harder temperature abrasion and hardness properties. The oxidation
grades are used primarily for electroforging and electrical resistance of both materials is excellent up to 1100oF.
upsetting dies, where temperatures and pressures are com-
paratively high.
5
 CONTACTS
CONVERSION TABLES INCHES INTO MILLIMETERS METALS
WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

Due to the current move to convert or switch from inches to the metric system as a universal measuring system we are
including the three tables below to allow conversion from inches into millimeters.
Examples:
Convert 0.588 inches into millimeters
From Table I 0.580 inches = 14.73 millimeters
From Table I 0.008 inches = 0.203 millimeters
Total 0.588 inches = 14.933 millimeters
Convert 3.065 inches into millimeters
From Table II 3 inches = 76.2002 millimeters
From Table I 0.060 inches = 1.524 millimeters
From Table I 0.005 inches = 0.127 millimeters
Total 3.065 inches = 77.8512 millimeters
Convert 2-51/64 inches into millimeters
From Table II 2-25/32 inches = 70.6439 millimeters
From Table II 1/64 inches = 0.3969 millimeters
Total 2-51/64 inches = 71.0408 millimeters
TABLE I
Decimals of
an inch into
TABLE II TABLE III
millimeters
Fractions of Gage-Decimal-
Milli- Milli- Millimeter Conver-
Inches meters Inches meters
an inch into
0.001 0.025 0.460 11.68 millimeters sion Chart
0.002 0.051 0.470 11.94
Milli- Milli-
0.003 0.076 0.480 11.94 Inches Inches Gage Decimal Millimeter
meters meters
0.004 0.102 0.490 12.45
0.005 0.127 0.500 12.70 1
/64 0.3969 33
/64 13.0969 3 .239 6.350
1 17
0.006 0.152 0.510 12.95 /32 0.7937 /32 13.4937 4 .234 5.953
3 35
0.007 0.178 0.520 13.21 /64 1.1906 /64 13.8906 5 .209 5.556
1 9
0.008 0.203 0.530 13.26 /16 1.5875 16
/ 14.2875 6 .194 5.159
5 37
0.009 0.229 0.540 13.72 /64 1.9844 64
/ 14.6844 7 .179 4.762
3 19
0.010 0.254 0.550 13.97 /32 2.3812 32
/ 15.0812 8 .164 4.365
7 39
/64 2.7781 / 15.4781
64 9 .150 3.968
0.020 0.508 0.560 14.22 1
/8 3.1750 5
/ 15.8750
8 10 .135 3.571
0.570 14.48 9 41
/64 3.5719 /64 16.2719 11 .120 3.175
0.030 0.762 0.580 14.73 5 21
/32 3.9687 /32 16.6687 12 .105 2.778
0.040 1.016 0.590 14.99 11 43
/64 4.3656 /64 17.0656 13 .090 2.381
0.050 1.270 0.600 15.24 3 11
/16 4.7625 /16 17.4625 14 .075 1.984
0.060 1.524 0.610 15.49 13
/64 5.1594 45
/64 17.8594 15 .067 1.778
0.070 1.778 0.620 15.75 7
/32 5.5562 23
/32 18.2562 16 .060 1.587
0.080 2.032 0.630 16.00 15
/64 5.9531 47
/64 18.6531 17 .054 1.422
0.090 2.286 0.640 16.26 1
/4 6.3500 3
/4 19.0500 18 .048 1.270
0.100 2.540 0.650 16.51 17
/64 6.7469 49
/64 19.4469 19 .042 1.118
0.110 2.794 0.660 16.76 9
/ 7.1437 25
/32 19.8437 20 .036 .965
32
0.120 3.048 0.670 17.02 19
/ 7.5406 51
/64 20.2406 21 .033 .865
64
0.130 3.302 0.680 17.27 5
/ 7.9375 13
/16 20.6375 22 .030 .793
16
0.140 3.56 0.690 17.53 21
/ 8.3344 53
/64 21.0344 23 .027 .711
64
0.150 3.81 0.700 17.78 11
/ 8.7312 27
/32 21.4312 24 .024 .635
32
23
/ 9.1281 55
/64 21.8281 25 .021 .559
0.160 4.06 0.710 18.03 3
64
7 26 .018 .483
/ 9.5250 /8 22.2250
0.170 4.32 0.720 18.29 8
27 .016 .432
25 57
0.180 4.57 0.730 18.54 /64 9.9219 /64 22.6219 28 .015 .396
13 29
0.190 4.83 0.740 18.80 /32 10.3187 /32 23.0187 29 .014 .356
27 59
0.200 5.08 0.750 19.05 /64 10.7156 /64 23.4156 30 .012 .330
7 15
/16 11.1125 /16 23.8125 31 .011 .279
0.210 5.33 0.760 19.30 29 61
/64 11.5094 /64 24.2094 32 .010 .254
0.220 5.59 0.770 19.56 15 31
/32 11.9062 /32 24.6062 33 .009 .229
0.230 5.84 0.780 19.81 31 63
/64 12.3031 /64 25.0031 34 .0082 .216
0.240 6.10 0.790 20.07 1
/2 12.7000 1 25.4001 35 .008 .203
0.250 6.35 0.800 20.32
36 .007 .178
0.260 6.60 0.810 20.57 37 .0064 .168
0.270 6.86 0.820 20.83 38 .006 .152
0.280 7.11 0.830 21.08
0.290 7.37 0.840 21.34
0.300 7.62 0.850 21.59
0.310 7.87 0.860 21.84
0.320 8.13 0.870 22.10
0.330 8.38 0.880 22.35
0.340 8.64 0.890 22.61
For Taper 0.350 8.89 0.900 22.86

Dimensions 0.360 9.14 0.910 23.11

0.370 9.40 0.920 23.37
in inches 0.380 9.65 0.930 23.62
and 0.390 9.91 0.940 23.88
0.400 10.16 0.950 24.13
millimeters
0.410 10.41 0.960 24.38
see Page 7. 0.420 10.67 0.970 24.64
0.430 10.92 0.980 24.89
0.440 11.18 0.990 25.15
0.450 11.43 1.000 25.40

6 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
TAPER DIMENSIONS AND ELECTRODE CODING METALS
WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

Standard Tapered Electrode Standard Male Taper

Taper Size
Theoretical Dimensions Cap taper Dimensions

.375 in .360 in. .500 in

.463 in. .438 in. .482 in. 9.53 mm 9.15 mm 12.70 mm
4RW
11.76 mm 11.13 mm 12.24 mm

ENGAGEMENT
.285 in gage pt.
1/2 in. gage pt. 1MT 7.24 mm
12.70 mm 3/8 in.
ENGAGEMENT 7/8 in. taper lg. taper lg.
9.53 mm
22.23 mm

.613 in. .588 in. ..625 in

15.57 mm 14.94 mm 15.88 mm 5RW .415 in. .396 in. .625 in.
10.54 mm 10.05 mm 10.88 mm

2MT ENGAGEMENT
1/2 in. gage pt. .390 in. gage pt.
12.70 mm ENGAGEMENT 9.91 mm
taper lg. 3/4 in.
19.05 mm taper lg. 1/2 in.
12.70 mm

.731 in. .706 in .750 in. .501 in. .476 in. .750 in
18.57 mm 17.93 mm 19.05 mm 6RW 12.72 mm 12.09 mm 19.05 mm

ENGAGEMENT
.500 in. gage pt.
1/2 in. gage pt. 12.70 mm
5/8 in.
12.70 mm taper lg.
7/8 in. taper lg. 15.88 mm
ENGAGEMENT
22.23 mm

7RW

.844 in. .819 in .875 in. .613 in. .588 in. .875 in.
21.44 mm 20.80 mm 22.23 mm 15.57 mm 14.94 mm 22.23 mm
3MT

ENGAGEMENT
.500 in. gage pt.
1/2 in. gage pt. 12.70 mm
12.70 mm 1 1/8 in. taper lg taper lg. 5/8 in.
28.58 mm ENGAGEMENT 15.88 mm

Drawings Full Size

CMW CODING RWMA CODING
FOR STRAIGHT TAPERED ELECTRODES FOR STRAIGHT TAPERED ELECTRODES
X X X X X X X X X X

Material Nose Attachment Length Length in

Nose Material Attachment no. of 1/4"
1 = CMW 28 ® 1 = Dome 1 = No. 4RW 1 = 1"
2 = Pointed No. 1MT 2 = 1 1/4" A = Pointed 1 = RWMA CL 1 4 = No. 4RW 04 = 1"
3 = CMW® 3 3 = Flat 3 = 1 1/2" CMW® 28 No. 1MT 05 = 1 1/4"
5 = CMW® 100 4 = Offset 2 = No. 5RW 4 = 1 3/4" 06 = 1 1/2"
6 = ELKONITE® 5 = 2" Sph. R No. 2MT 5 = 2" B = Dome 07 = 1 3/4"
10W3 6 = 10" Sph. R. 6 = 2 1/4" 5 = No. 5RW 08 = 2"
7 = ELKONITE® TC5 7 = Truncated 3 = No. 7RW 7 = 2 1/2" 2 = RWMA CL 2 No. 2MT 09 = 2 1/4"
8 = 2 3/4" C = Flat CMW® 3 10 = 2 1/2"
8 = ELKON® 100M 8 = 3" Sph. R No. 3MT 9 = 3"
9 = ELKON® 100W 9 = 4" Sph. R 11 = 2 3/4"
12 = 3 1/4" 6 = No. 6RW 12 = 3"
0 = Shank for 4 = No. 6RW 14 = 3 1/2"
Male Cap D = Offset 13 = 3 1/4"
16 = 3 3/4" 3 = RWMA CL 3 14 = 3 1/2"
18 = 4" CMW® 100 15 = 3 3/4"
Note: 20 = 4 1/4"
Prefix M P = Shank for Female Cap E = Truncated 7 = No. 7RW 16 = 4"
22 = 4 1/2" No. 3MT 17 = 4 1/4"
18 = 4 1/2"

7
 CONTACTS
CAP ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

These economical, quick change caps are made of long-lasting, highly-efficient CMW® 28, CMW ® 3, and CMW ® 328 ALLOYS, precision
manufactured to exacting tolerances in a wide range of standard configurations or to your special requirements

CMW FEMALE CAP ELECTRODES

ALL DIM. MARKED WITH AN (*) ARE COMMON TO EACH CAP IN A HORIZONTAL LINE.
POINTED DOME FLAT OFFSET TRUNCATED RADIUS
MPA14Z CMW® 28 MPB14Z CMW ® 28 MPC14Z CMW ® 28 MPD14Z CMW ® 28 MPE14Z CMW® 28 MPF14Z CMW® 28
MPA24 CMW® 3 MPB24 CMW® 3 MPC24 CMW® 3 MPD24 CMW® 3 MPE24 CMW ® 3 MPF24 CMW® 3
MPA24Z CMW® 328 MPB24Z CMW ® 328 MPC24Z CMW ® 328 MPD24Z CMW ® 328 MPE24Z CMW® 328 MPF24Z CMW® 328

RWMA 0.188ø R = 2.00"

#4 CAP 0.3945 ø * 0.188ø 0.188ø 0.500 ø* 0.188ø
TAPER 40 o0'
0.500 OD* 0.840*
45o0' 0.500 OD*

MPA15Z CMW® 28 MPB15Z CMW ® 28 MPC15Z CMW ® 28 MPD15Z CMW ® 28 MPE15Z CMW® 28 MPF15Z CMW® 28
MPA25 CMW® 3 MPB25 CMW® 3 MPC25 CMW® 3 MPD25 CMW® 3 MPE25 CMW ® 3 MPF25 CMW® 3
MPA25Z CMW® 328 MPB25Z CMW ® 328 MPC25Z CMW ® 328 MPD25Z CMW ® 328 MPE25Z CMW® 328 MPF25Z CMW® 328
RWMA R = 2.00"
#5 CAP 0.4951ø* 0.188ø
TAPER 0.250ø 0.188ø 0.625 ø* o
0.250 ø
40 0'

0.625 OD* 0.880* 45o0' 0.625 OD*

MPA16Z CMW® 28 MPB16Z CMW ® 28 MPC16Z CMW ® 28 MPD16Z CMW ® 28 MPE16Z CMW® 28 MPF16Z CMW® 28
MPA26 CMW® 3 MPB26 CMW® 3 MPC26 CMW® 3 MPD26 CMW® 3 MPE26 CMW ® 3 MPF26 CMW® 3
MPA26Z CMW® 328 MPB26Z CMW ® 328 MPC26Z CMW ® 328 MPD26Z CMW ® 328 MPE26Z CMW® 328 MPF26Z CMW® 328

RWMA 0.313 ø R = 4.00"

#6 CAP 0.6255ø* ø*
0.313ø 0.250ø 0.750 0.313 ø
TAPER
45o0'

0.750 OD* 1.00* 45o0' 0.750 OD*

CMW MALE CAP ELECTRODES

ALL DIM. MARKED WITH AN (*) ARE COMMON TO EACH CAP IN A HORIZONTAL LINE.

POINTED DOME FLAT OFFSET TRUNCATED RADIUS

MA14Z CMW ® 28 MB14Z CMW® 28 MC14Z CMW® 28 MD14Z CMW® 28 ME14Z CMW ® 28 MF14Z CMW® 28
MA24 CMW® 3 MB24 CMW® 3 MC24 CMW® 3 MD24 CMW® 3 ME24 CMW® 3 MF24 CMW® 3
MA24Z CMW ® 328 MB24Z CMW® 328 MC24Z CMW® 328 MD24Z CMW® 328 ME24Z CMW ® 328 MF24Z CMW® 328

RWMA 0.188 ø R = 2.00"

#4 CAP 0.3745 ø
TAPER
* 0.188ø 0.188ø 0.500 ø* 0.188ø
40o0'

0.500 OD* 0.285* 1.125 45o0' 0.500 OD*

MA15Z CMW ® 28 MB15Z CMW® 28 MC15Z CMW® 28 MD15Z CMW® 28 ME15Z CMW ® 28 MF15Z CMW® 28
MA25 CMW® 3 MB25 CMW® 3 MC25 CMW® 3 MD25 CMW® 3 ME25 CMW® 3 MF25 CMW® 3
MA25Z CMW ® 328 MB25Z CMW® 328 MC25Z CMW® 328 MD25Z CMW® 328 ME25Z CMW ® 328 MF25Z CMW® 328

RWMA 0.250 ø R = 2.00"

#5 CAP 0.4145 ø * 0.250ø 0.188ø 0.625 ø* 0.250 ø
o
TAPER 40 0'
0.390* 1.250 45 o0'
0.625 OD* 0.625 OD*

MA16Z CMW ® 28 MB16Z CMW® 28 MC16Z CMW® 28 MD16Z CMW® 28 ME16Z CMW ® 28 MF16Z CMW® 28
MA26 CMW® 3 MB26 CMW® 3 MC26 CMW® 3 MD26 CMW® 3 ME26 CMW® 3 MF26 CMW® 3
MA26Z CMW ® 328 MB26Z CMW® 328 MC26Z CMW® 328 MD26Z CMW® 328 ME26Z CMW ® 328 MF26Z CMW® 328

RWMA 0.313ø R=
#6 CAP 0.5005ø
TAPER
* 0.750ø* 0.313 ø 4.00"
45 o0'
0.313ø 0.250ø
0.750 OD* 0.500* 1.625 45o0' 0.750 OD*

8 DIMENSIONS ARE IN INCHES. ORDER BY CMW PART NUMBER ONLY SEE PAGES 10 AND 11 FOR SHANKS
 CONTACTS
CMW GCAP® ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

The CMW GCAP® * electrode is the answer to welding galvanized less electric power (up to 25% less) and still achieve superior welds
steels. The GCAP’s® revolutionary design, and precision manufac- due to GCAP® design. Productivity will increase with up to 10 times
turing from CMW Engineering provides for no sticking from the very more welds without dressing.
first weld. GCAP® electrode nuggets meet or exceed industry stan- For best use of CMW GCAPS® , a stepper program is recom-
dards for high quality welds from the first weld through the life of the mended. Consult CMW application engineering.
cap. This cap design made from R.W.M.A. class 2 material elimi- *U.S. Patent 4,954,687; 5,015,816; 5,126,528.
nates brass build-up by literally rolling the brass away. You will use Other patents pending.

CMW GCAP® FEMALE CAP ELECTRODES

ALL DIM. MARKED WITH AN (*) ARE COMMON TO EACH CAP IN A HORIZONTAL LINE.

STRAIGHT OFFSET OFFSET 15o OFFSET 30o

RWMA MPGD244 MPGD244-1501 MPGD244-3001
#4 CAP MPG244
TAPER
0.3945 Ø* 0.250 Ø * 0.500 Ø* .500 Ø *

.500 Ø * 0.840*

MPG254 MPGD254 MPGD254-1501 MPGD254-3001

RWMA
#5 CAP
TAPER 0.4951 Ø* 0.250 Ø* 0.625 Ø* .625 Ø *

.625 Ø * 0.880*

MPGD255 MPGD255-1501 MPGD255-3001

MPG255
RWMA
#5 CAP
TAPER .625 Ø *
0.4951 Ø* 0.313 Ø* 0.625 Ø*
.625 Ø * 0.880*
MPG266 MPGD266 MPGD266-1501 MPGD266-3001
RWMA
#6 CAP
TAPER 0.6255 Ø* 0.375 Ø* 0.750 Ø* .750 Ø *

.750 Ø *
1.000*

CMW GCAP ® MALE CAP ELECTRODES

ALL DIM. MARKED WITH AN (*) ARE COMMON TO EACH CAP IN A HORIZONTAL LINE.
STRAIGHT
MG244
OFFSET
MGD244
°
OFFSET 15
MGD244-1501
OFFSET 30
MGD244-3001
RWMA
#4 CAP 0.3745 Ø* 0.250 Ø* 0.500 Ø* .500 Ø *
TAPER
0.285 *
.500 Ø * 1.125 *

MG254 MGD254 MGD254-1501 MGD254-3001

RWMA
#5 CAP
TAPER 0.4145 Ø* 0.250 Ø* 0.625 Ø* .625 Ø *

.625 Ø * 0.390 *
1.250 *

MG255 MGD255 MGD255-1501 MGD255-3001

RWMA
#5 CAP 0.4145 Ø* 0.313 Ø* 0.625 Ø* .625 Ø *
TAPER

.625 Ø * 0.390 *
1.250 *

MG266 MGD266 MGD266-1501 MGD266-3001

RWMA
#6 CAP 0.5005 Ø* 0.375 Ø* 0.750 Ø*
TAPER .750 Ø *

.750 Ø * 0.500 *
1.625 *

DIMENSIONS ARE IN INCHES. ORDER BY CMW PART NUMBER ONLY SEE PAGES 10 AND 11 FOR SHANKS 9
SEE PAGE #51 FOR SUGGESTED GCAP® WELD SCHEDULES
 CONTACTS
SHANKS FOR FEMALE CAPS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

CMW shanks are precision manufactured from CMW ®3 class 2 material to provide a high quality mount for cap
type electrodes. They are designed for high strength and electrical conductivity.

These shanks are shown with a blind water hole for cap replacement without shutting off water. Shanks with through water holes
are available, by adding “TH” to the basic part number. Example; MP30212TH.

Shanks for female caps with #4 RWMA tapers Bent offset shanks for female caps with #4 RWMA tapers
PART A B PART A B C
NO. * DIM. DIM. NO. * DIM. DIM. DIM.

MP3012 1.25 1.75 MP3019-08 2.62 3.28 .50

MP3013 1.50 2.00 MP3019-12 2.56 3.22 .75
MP3014 1.75 2.25 MP30112-12 2.81 3.47 .75
MP3015 2.00 2.50 MP30112-16 2.37 3.03 1.00
MP3016 2.25 2.75 MP30116-16 2.87 3.53 1.00
MP3017 2.50 3.00 MP30116-20 2.60 3.28 1.25
MP3018 2.75 3.25
MP3019 3.00 3.50
MP30112 3.25 3.75
MP30114 3.50 4.00
MP30116 3.75 4.25
MP30118 4.00 4.50

Bent Dimensions for Reference Only

Shanks for female caps with #5 RWMA tapers Bent offset shanks for female caps with #5 RWMA tapers
PART A B PART A B C
NO. * DIM. DIM. NO. * DIM. DIM. DIM.
MP3023 1.46 2.00 MP3029-08 2.58 3.20 .50
MP3024 1.71 2.25 MP3029-12 2.60 3.12 .75
MP3025 1.96 2.50 MP30212-12 2.77 3.44 .75
MP3026 2.21 2.75 MP30212-16 2.33 3.00 1.00
MP3027 2.46 3.00 MP30214-12 3.00 3.66 .75
MP30214-16 2.81 3.48 1.00
MP3028 2.71 3.25
MP30216-16 2.83 3.49 1.00
MP3029 2.96 3.50
MP30216-20 2.77 3.43 1.25
MP30212 3.21 3.75
MP30214 3.46 4.00
MP30216 3.71 4.25
MP30218 3.96 4.50
MP30220 4.21 4.75
MP30222 4.46 5.00
Bent Dimensions for Reference Only

Shanks for female caps with #6 RWMA tapers Bent offset shanks for female caps with #6 RWMA tapers
PART A B PART A B C
NO. * DIM. DIM. NO. * DIM. DIM. DIM.
MP3044 1.64 2.25 MP3049-08 2.69 3.30 .50
MP3045 1.89 2.50 MP30412-12 2.81 3.42 .75
MP3046 2.14 2.75 MP30414-12 2.94 3.55 .75
MP3047 2.39 3.00 MP30416-16 3.06 3.67 1.00
MP3048 2.64 3.25 MP30420-20 3.25 3.86 1.25 B
MP3049 2.89 3.50
A
MP30412 3.14 3.75
MP30414 3.39 4.00
MP30416 3.64 4.25 1.438

MP30418 3.89 4.50

.245 Ð * C
MP30420 4.14 4.75
MP30422 4.39 5.00

Bent Dimensions for Reference Only

10 DIMENSIONS ARE IN INCHES. ORDER BY CMW PART NUMBER ONLY SEE PAGES 8 AND 9 FOR CMW STANDARD AND GCAP ELECTRODE CAPS
 CONTACTS
SHANKS FOR MALE CAPS METALS
WELDING

CMW shanks are precision manufactured from CMW ®3 class 2 material to provide a high quality mount for cap
electrodes. They are designed for high strength and electrical conductivity.

Shanks for male caps with #4 RWMA tapers Bent offset shanks for male caps with #4 RWMA tapers
PART A B PART A B C
NO. * DIM. DIM. NO. * DIM. DIM. DIM.
3012 1.25 1.88 3019-08 2.62 3.37 .50
3013 1.50 2.12 3019-12 2.56 3.31 .75
3014 1.75 2.38 30112-12 2.81 3.56 .75
3015 2.00 2.62 30112-16 2.37 3.12 1.00
3016 2.25 2.88 30116-16 2.87 3.62 1.00
B
3017 2.50 3.12 30116-20 2.62 3.37 1.25 B
A
3018 2.75 3.38 A
3019 3.00 3.62
.3735Ø 15 /8
30112 3.25 3.88
.482Ø .182Ø C
30114 3.50 4.12
30116 3.75 4.38
30118 4.00 4.62

Bent Dimensions for Reference Only

Shanks for male caps with #5 RWMA tapers Bent offset shanks for male caps with #5 RWMA tapers
PART A B PART A B C
NO. * DIM. DIM. NO. * DIM. DIM. DIM.
3022 1.25 2.00 3028-08 2.37 3.12 .50
3023 1.50 2.25 3028-12 2.31 3.06 .75
3024 1.75 2.50 B 30212-12 2.81 3.56 .75
3025 2.00 2.75 B
A 30212-16 2.37 3.12 1.00
3026 2.25 3.00 A
30214-12 3.06 3.81 .75
3027 2.50 3.25 .4135Ø
3028 2.75 3.50 30214-16 2.62 3.37 1.00 15 /8
.245Ø C
3029 3.00 3.75 .625Ø 30214-20 2.37 3.12 1.25
30212 3.25 4.00 30216-16 2.87 3.62 1.00
30214 3.50 4.25 30216-20 2.62 3.37 1.25
30216 3.75 4.50
30218 4.00 4.75
30220 4.25 5.00
Bent Dimensions for Reference Only
30222 4.50 5.25
Shanks for male caps with #6 RWMA tapers Bent offset shanks for male caps with #6 RWMA tapers
PART A B PART A B C
NO. * DIM. DIM. NO. * DIM. DIM. DIM.
3043 1.50 2.62 30412-08 2.62 3.75 .50
3044 1.75 2.88 30412-12 2.56 3.69 .75
3045 2.00 3.12 30414-12 2.75 3.88 .75
B 30416-16 2.87 4.00 1.00
3046 2.25 3.38 B
A 30420-20 3.12 4.25 1.25 A
3047 2.50 3.62
3048 2.75 3.88
.4995Ø 17/8
3049 3.00 4.12
.245Ø
30412 3.25 4.38 C
.750Ø
30414 3.50 4.62
30416 3.75 4.88
30418 4.00 5.12
30420 4.25 5.38
30422 4.50 5.62 Bent Dimensions for Reference Only

DIMENSIONS ARE IN INCHES. ORDER BY CMW PART NUMBER ONLY SEE PAGES 8 AND 9 FOR CMW STANDARD AND GCAP® ELECTRODE CAPS. 11
 CONTACTS
STRAIGHT ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

See Page 6 DOME NOSE H POINTED NOSE

For Metric Water Hole
Conversion Dia.
A
See Page 7 A HA
for taper ❤ 9/32 .482
Dimensions D G B 3/8 .625
G
7/16 .750 D B
C 1/2 .875 C

Nose Face Major Overall Hole Nose Face

CMW ® 28 CMW® 3 CMW ® 100 Length Dia. Dia. Length Taper Depth CMW ® 28 CMW® 3 CMW® 100 Length Dia.
Part No. Part No. Part No. B H A C D G Part No. Part No. Part No. B H
Class 1 Class 2 Class 3 Class 1 Class 2 Class 3

4RW (# 1MT)
1111 3111 5111 13/64 1 5/8 1211 3211 5211 3/8
1112 3112 5112 1/4 1-1/4 3/4 1212 3212 5212 3/8
1113 3113 5113 1/4 1-1/2 1 1213 3213 5213 5/8
1114 3114 5114 1-3/4 4RW 1-1/4 1214 3214 5214
1115 3115 5115 1/4 2 1-1/2 1215 3215 5215 3/4
1116 3116 5116 2-1/4 1-3/4 1216 3216 5216
1117 3117 5117 3/16 .482 2-1/2 OR 2 1217 3217 5217 3/16
1118 3118 5118 1/4 2-3/4 2-1/4 1218 3218 5218 3/4
1119 3119 5119 3 2-1/2 1219 3219 5219
11112 31112 51112 3-1/4 1MT 2-3/4 12112 32112 52112
11114 31114 51114 1/4 3-1/2 3 12114 32114 52114 3/4
11116 31116 51116 3-3/4 3-1/4 12116 32116 52116
11118 31118 51118 1/4 4 3-1/2 12118 32118 52118 3/4

5RW (# 2MT)
1122 3122 5122 1-1/4 3/4 1222 3222 5222 1/2
1123 3123 5123 3/8 1-1/2 3/4 1223 3223 5223 3/4
1124 3124 5124 1-3/4 1 1224 3224 5224 3/4
1125 3125 5125 2 5RW 1-1/4 1225 3225 5225
1126 3126 5126 3/8 2-1/4 1-1/2 1226 3226 5226 1-1/8
1127 3127 5127 2-1/2 1-3/4 1227 3227 5227
1128 3128 5128 1/4 .625 2-3/4 OR 2 1228 3228 5228 1/4
1129 3129 5129 3/8 3 2-1/4 1229 3229 5229 1-1/8
11212 31212 51212 3-1/4 2-1/2 12212 32212 52212
11214 31214 51214 3-1/2 2MT 2-3/4 12214 32214 52214
11216 31216 51216 3/8 3-3/4 3 12216 32216 52216 1-1/8
11218 31218 51218 4 3-1/4 12218 32218 52218
11220 31220 51220 4-1/4 3-1/2 12220 32220 52220
11222 31222 51222 3/8 4-1/2 3-3/4 12222 32222 52222 1-1/8
Electrodes of other tapers and alloys available upon request.

12 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
STRAIGHT ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

See Page 6 FLAT NOSE OFFSET NOSE

For Metric Water Hole
Conversion Dia. A
B
See Page 7
HA A
for taper 9/32 .482 H
Dimensions D G 3/8 .625
D G
7/16 .750
C 1/2 .875 C
Face Major Overall Hole Nose Face
CMW® 28 CMW® 3 CMW® 100 Dia. Dia. Length Taper Depth CMW® 28 CMW® 3 CMW® 100 Angle Dia.
Part No. Part No. Part No. H A C D G Part No. Part No. Part No. B H
Class 1 Class 2 Class 3 Class 1 Class 2 Class 3

4RW (# 1MT)
1311 3311 5311 1 5/8 1411 3411 5411 45 o
1312 3312 5312 1-1/4 3/4 1412 3412 5412 40 o
1313 3313 5313 1-1/2 1 1413 3413 5413 30 o
1314 3314 5314 1-3/4 4RW 1-1/4 1414 3414 5414
1315 3315 5315 2 1-1/2 1415 3415 5415 30 o
1316 3316 5316 2-1/4 1-3/4 1416 3416 5416
1317 3317 5317 .482 .482 2-1/2 OR 2 1417 3417 5417 3/16
1318 3318 5318 2-3/4 2-1/4 1418 3418 5418 30 o
1319 3319 5319 3 2-1/2 1419 3419 5419
13112 33112 53112 3-1/4 1MT 2-3/4 14112 34112 54112
13114 33114 53114 3-1/2 3 14114 34114 54114 30 o
13116 33116 53116 3-3/4 3-1/4 14116 34116 54116
13118 33118 53118 4 3-1/2 14118 34118 54118 30 o

5RW (# 2MT)
1322 3322 5322 1-1/4 3/4 1422 3422 5422 40 o
1323 3323 5323 1-1/2 3/4 1423 3423 5423 40 o
1324 3324 5324 1-3/4 1 1424 3424 5424 30 o
1325 3325 5325 2 5RW 1-1/4 1425 3425 5425
1326 3326 5326 2-1/4 1-1/2 1426 3426 5426 30 o
1327 3327 5327 2-1/2 1-3/4 1427 3427 5427
1328 3328 5328 5/8 .625 2-3/4 OR 2 1428 3428 5428 1/4
1329 3329 5329 3 2-1/4 1429 3429 5429 30 o
13212 33212 53212 3-1/4 2-1/2 14212 34212 54212
13214 33214 53214 3-1/2 2MT 2-3/4 14214 34214 54214
13216 33216 53216 3-3/4 3 14216 34216 54216 30 o
13218 33218 53218 4 3-1/4 14218 34218 54218
13220 33220 53220 4-1/4 3-1/2 14220 34220 54220 30 o
13222 33222 53222 4-1/2 3-3/4 14222 34222 54222

Electrodes of other tapers and alloys available upon request.

ORDER BY CMW PART NUMBER ONLY 13

 CONTACTS
STRAIGHT ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

See Page 6 RADIUS NOSE TRUNCATED NOSE

For Metric Water Hole
A
Conversion R Dia.
See Page 7 A HA
for taper 9/32 .482
Dimensions D G 3/8 .625
D G
C 7/16
1/2
.750
.875 C 30 °

Major Overall Hole Spherical Major Overall Hole Face

CMW® 28 CMW® 3 CMW® 100 Dia. Length Taper Depth Radius CMW® 28 CMW® 3 CMW® 100 Dia. Length Taper Depth Diam.
Part No. Part No. Part No. A C D G R Part No. Part No. Part No. A C D G H
Class 1 Class 2 Class 3 Class 1 Class 2 Class 3

1523 3523 5523 1-1/2 3/4 1712 3712 5712 1-1/4 3/4
1525 3525 5525 2 1-1/4 1713 3713 5713 1-1/2 4RW 1
1527 3527 5527 2-1/2 1-3/4 2 1715 3715 5715 .482 2 OR 1-1/2 3/16
1717 3717 5717 2-1/2 1MT 2
1529 3529 5529 3 2-1/4
1718 3718 5718 2-3/4 2-1/4
15218 35218 55218 4 3-1/4
1723 3723 5723 1-1/2 3/4
1623 3623 5623 1-1/2 5RW 3/4
1725 3725 5725 2 5RW 1-1/4
1625 3625 5625 2 1-1/4 1727 3727 5727 .625 2-1/2 OR 1-3/4 1/4
1627 3627 5627 .625 2-1/2 OR 1-3/4 10
1729 3729 5729 3 2MT 2-1/4
1629 3629 5629 3 2-1/4 17218 37218 57218 4 3-1/4
16218 36218 56218 4 2MT 3-1/4

1825 3825 5825 2 1-1/4 3

1829 3829 5829 3 2-1/4

1925 3925 5925 2 1-1/4 4

1929 3929 5929 3 2-1/4
30° OFFSET NOSE

A
Major Overall Hole Face H
CMW® 28 CMW® 3 Dia. Length Taper Depth Dia.
G
D
Part No.
Class 1
Part No.
Class 2
A C D G H
C 30 °
4RW
16-2491 16-2494 .482 2 1-1/2 1/4
1MT

5RW
16-2492 16-2495 .625 2-1/2 2 3/8
2MT

7RW
16-2493 16-2496 .875 3 2-1/4 1/2
3MT

ELKONITE ® AND ELKON ® FACED

STRAIGHT MORSE TAPER ELECTRODES
ELKON®OR Over
ELKONITE® ELKON® ELKON® Major ELKONITE® all Hole Face H
10W3 100M 100W Dia. Lg. Lg. Taper Depth Dia.
Face Face Face A B C D G H
® ® A
ELKONITE AND ELKON DOME NOSE
4RW D G B
611050 811050 911050 .482 3/16 2 1-1/2 1/8
1MT C
5RW
612050 812050 912050 .625 1/4 2
2MT
1-1/2 1/8

ELKONITE® AND ELKON® FLAT NOSE

H&A
631050 831050 931050 .482 3/16 2 4RW 1-1/2 .482
1MT
D G B
632030 .625 1/4 1-1/2 5RW 1 5/8
C
632050 832050 932050 2 1-1/2
632070 2-1/2 2MT 2
16-1353 .625 1/4 2-1/2 5/8 1/ 16

633050 833050 933050 .875 1/4 2 7RW 1-1/2 7/8

H A
3MT

ELKON ® CENTERED INSERT NOSE D G B

C
4RW
871050 971050 .482 3/8 2
1MT 1-1/2 3/16 Electrodes of other tapers and alloys available upon request.
For other ELKONITE ® and ELKON ® materials see page 5 and for other recommended
5RW uses see the chart on page 56.
872050 972050 .625 3/8 2 1-1/4 1/4 Electrodes faced with material other than those shown on this page are available to
14 2MT special order.
 CONTACTS
SINGLE BEND ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

CMW® 3 single bend electrodes are cold formed from full hard straight electrodes, and have properties superior to those obtained by casting or hot
forging methods. Cooling tubes are bent in place, if requested, to provide water flow as near to the welding face as in the case of straight electrodes.
These extra values assure you a more efficient, less costly electrode for gun welders and special offset welding applications.
Furnished with water tubes as specials to your order. Other nose types available to order. For dimensions not shown here see straight electrode
(round water hole) measurements on page 12, 13 and 14. CMW® 28 material available on special order.

Part No. Reference Taper Offset Bent

Length C
L of Taper Angle
to C
L to
of Face C
L of Face
“C” “D” “L” “Θ ”
3214-04-15 1 11/16 1/4
3219-04-15 2 15/16 4RW 1/4
32118-13-15 3 7/8 1MT 13/16
3225-04-15 1 7/8 1/4 15°
3229-04-15 2 7/8 5RW 1/4
32218-10-15 3 13/16 2MT 5/8
3215-07-30 1 7/8 7/16
3219-07-30 2 7/8 4RW 7/16
32118-23-30 3 5/8 1MT 1 7/16
3226-09-30 2 1/16 9/16 30°
SINGLE BEND 32212-09-30 3 1/16 5RW 9/16
32220-24-30 3 13/16 2MT 1 1/2
3215-10-45 1 11/16 5/8
32112-12-45 2 7/8 4RW 3/4
32118-33-45 3 1/8 1MT 2 1/16
3228-17-45 2 1/4 1 1/16 45°
32214-17-45 3 5RW 1 1/16
Θ L 32220-33-45 3 3/8 2MT 2 1/16
D 3218-23-60 2 1 7/16
32116-23-60 3 4RW 1 7/16
32118-40-60 2 5/8 1MT 2 1/2
C 32212-25-60 2 3/8 1 9/16 60°
32218-25-60 3 1/8 5RW 1 9/16
32220-38-60 3 2MT 2 3/8
32216-35-75 2 5/16 2 3/16
32220-37-75 2 11/16 5RW 2 5/16 75°
32220-43-75 2 3/8 2MT 2 11/16

Part No. O.A.L. Offset Bent

RADIUS BEND C
L of Taper Angle
to Top of
Radius
.625 DIA. “C” “L” “Θ ”
16-26015 3 11/16 3/8 15°
16-26030 3 5/8 33/64 30°
5/16
16-26045 3 1/2 43/64 45°
L
16-26060 3 3/8 27/32 60°
5RW 1 5/8 Θ 16-26075 3 5/32 1 1/32 75°
2MT MIN. STRAIGHT
LENGTH 16-26090 2 13/16 1 1/4 90°
SPH.R. 3/16

C
Radius bend electrodes are designed for use with 18-768 & 18-
784 straight universal adapters shown on page #35.

See Page 6 for Metric Conversion

See Page 7 for Taper Dimensions

ORDER BY CMW PART NUMBER ONLY BENT DIMENSIONS REFERENCE ONLY 15

 CONTACTS
DOUBLE BEND ELECTRODE CODING SYSTEM METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

CMW double bend electrodes are cold formed from full hard straight electrodes, and have properties superior to those obtainable by casting or hot
forging methods. Cooling tubes, unless otherwise specified are bent in place to provide coolant flow near the welding face as in the case of straight
electrodes. These extra values assure you of longer electrode life, longer runs between dressings, and highest weld quality. CMW® 3 material is
standard for these electrodes.

FLAT
NOSE
2" APPROX. N
OFFSET
R 1/8 NOSE

D
DOME
R 1/8 NOSE

T POINTED
NOSE

OFFSET (D)
TAPER OVERALL LENGTH (C)
NOSE NOSE LENGTH (N)
MATERIAL TAPER LENGTH (T)

X X X — XX XX — X X Z
OPTIONAL
WITHOUT WATER TUBE

1= CMW ® 28 1= DOME 1=4RW 1MT 08 = 1/2" 32 = 2" 2 = 3/4"

3=*CMW ® 3 2= *POINTED 2=5RW 2MT 12 = 3/4" 36 = 2 1/4" 3 = 7/8"

5= CMW ® 100 3= FLAT 16 = 1" 40 = 2 1/2" 4 = 1"

4= OFFSET 20 = 1 1/4" 44 = 2 3/4" ** 5 = 1 1/8"

* STANDARD 24 = 1 1/2" 48 = 3" ** 6 = 1 1/4"

28 = 1 3/4" 52 = 3 1/4" ** 7 = 1 1/2"

56 = 3 1/2" ** 8 = 1 3/4"

EXAMPLE: 60 = 3 3/4" ** 9 = 2"

322-0840-44 ** MAY NOT BE A
vv
STOCK ITEM
1" TAPER LENGTH (T)
STANDARD 4RW NOSE
1" NOSE LENGTH (N) LENGTH = 3/4"
2 1/2" OVERALL LENGTH (C) STANDARD 4RW TAPER
N LENGTH = 7/8"
1/2" OFFSET (D)
STANDARD 5RW NOSE
5RW TAPER & TAPER LENGTH = 1"
D
POINTED NOSE
CMW 3 MATERIAL T WATER TUBE SIZE:
See Page 6 for Metric Conversion 4RW – 0.185 O.D.
C 5RW = 0.245 O.D.
See Page 7 for Taper Dimensions

16 ORDER BY CMW PART NUMBER ONLY BENT DIMENSIONS REFERENCE ONLY

 CONTACTS
DOUBLE BEND ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING
CMW double bend electrodes are cold formed from full hard straight electrodes, and have properties superior to those obtainable by casting or hot forging methods. Cooling tubes, unless
otherwise specified are bent in place to provide coolant flow near the welding face as in the case of straight electrodes. These extra values assure you of longer electrode life, longer runs between
dressings, and highest weld quality. CMW® 3 material is standard for these electrodes. CMW® 28, CMW ® 100, CMW® 328 available on special order.

2 N
APPROX.

Dome
Pointed
Taper Nose Taper Flat Pointed Nose Part No.
Offset Size End End O.A.L.
“D” “N” “T” “C”
3/4 7/8 2 321-0832-23
4RW 3/4 7/8 2 1/2 321-0840-23
1MT 2 7/8 3 1/4 321-0852-93
1/2 1 1 2 1/2 322-0840-44
1 1 2 3/4 322-0844-44
5RW 1 1 3 1/4 322-0852-44
2MT 2 1 3 1/2 322-0856-94
3/4 7/8 2 321-1232-23
4RW 3/4 7/8 2 1/2 321-1240-23
1MT 2 7/8 3 1/2 321-1256-93
3/4 1 1 2 3/4 322-1244-44
5RW 1 1 3 322-1248-44
2MT 2 1 3 1/2 322-1256-94
3/4 7/8 2 1/4 321-1636-23
3/4 7/8 2 3/4 321-1644-23
4RW 1 3/4 7/8 3 1/4 321-1652-83
1MT 3/4 7/8 3 1/2 321-1656-23
1 1 1 2 3/4 322-1644-44
1 1 3 322-1648-44
5RW 1 1 3 1/2 322-1656-44
2MT 1 3/4 1 3 1/2 322-1656-84
3/4 7/8 2 1/2 321-2040-23
4RW 3/4 7/8 3 321-2048-23
1MT 1 1/2 7/8 3 321-2048-73
1 1/4 1 1 2 3/4 322-2044-44
1 1 3 1/4 322-2052-44
5RW 1 1 3 1/2 322-2056-44
2MT 1 1/2 1 3 1/2 322-2056-74
1 3/4 1 3 1/2 322-2056-84
5RW 1 1 2 3/4 322-2444-44
1 1/2 2MT 1 1/4 1 3 322-2448-64
5RW 1 1 2 3/4 322-2844-44
1 3/4 2MT 1 1/4 1 3 322-2848-64

See Page 6 for Metric Conversion WATER TUBE SIZE:

See Page 7 for Taper Dimensions 4RW – 0.185 O.D.
5RW = 0.245 O.D.

ORDER BY CMW PART NUMBER ONLY BENT DIMENSIONS REFERENCE ONLY 17

 CONTACTS
CRANK ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

9
/32
1
1 /4 1 1 /4
5RW / 1
5RW 2MT 4RW 1 2

2MT 1MT
/ DIA.
13 32 11 32/ DIA. 30o
1 1 /8 1 1 /8
/ R
5 32
1 3/4 3 8 / 1 3 /4 11 16 / 2 1 /4
1
2 /8 2 7/ 16

16-38661 CMW® 3 16-3866 CMW ® 3 16-3835 CMW ® 3

COLD FORMED* COLD FORMED* CASTING

3
/8 9
/ 32 /
3 8

1 1
/
5 8 1
5RW 4RW 5RW
2MT 1MT 2MT
30o
/ R
3 16 / R
3 16

5
/ 32 R 2 3 /4 2 3 /4
2 1/4

16-3836 CMW ® 3 16-3837 CMW ® 3 16-3838 CMW ® 3

CASTING CASTING CASTING

9
/32 3
/8


9
/32
5
/8 3
/8 1 1 /4
1
/2 4RW
1MT 5RW 5
/8 3
/8 1 1 /4
19
/32 2MT
/ 3 8
4RW 1
/4 DIA. 3
/8
1MT 3 DIA.
/8 3
2 /4
3
2 /4
16-3870 CMW ® 3 16-3860
COLD FORMED* 3 16-3862 2
16-3861 2 /8
16-3863 2 3 /8
CMW® 3 CMW® 3
FORGED FORGED

3 9 3
/8 5
/8 /32 /8
1 1
7
/8 /4 25
/32 /4 25
/32
4RW
5RW 1MT 7
/16 5RW 7
2MT /16
5
/16 DIA. 2MT DIA.
1 3
/2 /4 3
/4
1
2 /8 1 3 /4 1 3 /4

16-3871 CMW ® 3 16-3873 CMW ® 3 16-3874 CMW ® 3

COLD FORMED* CASTING CASTING

3
/8
3
/8
3
/8 5RW
5
2MT /8
5RW 5
/8 3 DIA.
5RW 1 /4 2 1 /8
2MT 5
/8 1 1 /2 2MT 1
/4
DIA.
3
/8
3 2 3 /4
2 1 /2 /4 3
/16 R 115 /16 1
/2
3
® ® ®
16-38351 CMW 3 16-38352 CMW 3 16-38353 CMW 3
COLD FORMED* COLD FORMED* COLD FORMED*

* Optional material available on special order:

See Page 6 for Metric conversions See page 7 for Taper dimensions
CMW® 28, CMW ® 100

18 ORDER BY CMW PART NUMBER ONLY BENT DIMENSIONS REFERENCE ONLY

 CONTACTS
SPADE AND GUN ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

See page 6 for Metric conversions

See page 7 for Taper dimensions
SPADE ELECTRODES

15/ 64 5/16

Ø 3/16 Ø 9/32 Ø 1/4 Ø 3/ 8

FLATTENED 11/4 FLATTENED 15/ 8
NOSE NOSE
31/ 16 35/ 16

3/ 4 15/16
APPROX. APPROX.
# 4 R.W.M.A.
#5 R.W.M.A.
ELECTRODE TAPER
ELECTRODE TAPER
16-38209 CMW ® 3 16-382109 CMW® 3
COLD FORMED* COLD FORMED*
11/4
15/16
1/2
1/2
5/8
1 MIN.
23/ 4 9/32
215 /16 3/8

Ø .245 3/4 APPROX.

5/8
Ø .182 APPROX.
# 4 R.W.M.A. #5 R.W.M.A.
ELECTRODE TAPER ELECTRODE TAPER
16-38201 CMW 3 ® 16-382101 CMW® 3
COLD FORMED* COLD FORMED*
11/4
11/4
9/32 3/ 8
1/2 1/ 2
3/4
7/ 8
HOLE
1 MIN.
213 /16 1/ 4 5/ 16
31/ 16

11/ 16 15 /16 APPROX.

APPROX.
#5 R.W.M.A.
# 4 R.W.M.A. ELECTRODE TAPER
ELECTRODE TAPER
16-38202 CMW ® 3 16-382102 CMW® 3
COLD FORMED* COLD FORMED*

* Optional material available on special order: CMW®28 & CMW®100

GUN ELECTRODES
9/32 3/ 8
1/2 1/ 2
# 4 R.W.M.A.
ELECTRODE TAPER 7/ 8 #5 R.W.M.A. 7/8
1 3/8 ELECTRODE TAPER 3/ 8
HOLE 1/4 1 1/ 4
23/4 HOLE
9/ 16 2 3/ 4 9/ 16
16-3820 CMW® 3 16-3821 CMW® 3
CASTING CASTING
16-3841 27/32 7/ 16 5/16 1/2
/16

16-3840 131/32 3/8

5

/16

30o
5

30o 19/32 13/ 16

3/ 8 3/8 3/8

5/ 32 9/ 32
#5 R.W.M.A.
1 1/4 1 1/ 4
5/ 16 #5 R.W.M.A. 19/16
ELECTRODE TAPER #5 R.W.M.A. 1 3/4
ELECTRODE TAPER ELECTRODE TAPER
1 7/ 8 21/4 29/32
16-3840 AND 16-382120 CMW® 3 16-3847 CMW® 3
16-3841 CMW ® 3 CASTING COLD FORMED*
COLD FORMED*
ORDER BY CMW PART NUMBER ONLY BENT DIMENSIONS REFERENCE ONLY 19
 CONTACTS
CHAMELEON/MAX-LIFE™ NUT WELDING ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

Ø 5/8
"P"
PIN
ELKONITE® DIA.
10W3
FACE
Nut Screw Ceramic Coated Elkonite®
CMW® 3
.250 Welding Thread "P" Spring Stainless Steel Faced
Base
Assemblies Size Pin Cap

16-37725-04 #4 .142 16-37325 16-950078-01 16-950064-04 16-37725-C04

16-37725-05 #5 .158 16-37325 16-950078-01 16-950064-05 16-37725-C05
16-37725-06 #6 .173 16-37325 16-950078-01 16-950064-06 16-37725-C06
16-37725-M4 4MM .187 16-37325 16-950078-01 16-950064-M4S 16-37725-CM4
2 7/8 "
16-37725-08 #8 .198 16-37325 16-950078-01 16-950064-08 16-37725-C08
16-37725-10 #10 .220 16-37325 16-950078-01 16-950064-10 16-37725-C10
1/16 - 27 16-37725-M5 5MM .226 16-37325 16-950078-01 16-950064-M5S 16-37725-CM5
NPT 16-37725-12 #12 .250 16-37325 16-950078-01 16-950064-12 16-37725-C12
16-37725-M6 6MM .266 16-37325 16-950078-01 16-950064-M6S 16-37725-CM6
16-37725-25 .250 .283 16-37325 16-950078-01 16-950064-25 16-37725-C25
#5 R.W.M.A.
ELECTRODE TAPER

Ø 1"
"P"
PIN
ELKONITE® DIA.
10W3
FACE
.250

Nut Screw Ceramic Coated Elkonite®

CMW® 3
Welding Thread "P" Spring Stainless Steel Faced
Base
Assemblies Size Pin Cap
2 13/ 16 "
16-37825-M4 4MM .187 16-37825 16-950065-01 16-950064-M4 16-37825-CM4
16-37825-M5 5MM .226 16-37825 16-950065-01 16-950064-M5 16-37825-CM5
16-37825-M6 6MM .266 16-37825 16-950065-01 16-950064-M6 16-37825-CM6
16-37825-M7 7MM .305 16-37825 16-950065-01 16-950064-M7 16-37825-CM7
16-37825-M8 8MM .344 16-37825 16-950065-01 16-950064-M8 16-37825-CM8
1/ 8 - 27 16-37825-M9 9MM .384 16-37825 16-950065-01 16-950064-M9 16-37825-CM9
NPT
5/ 8 - 18 UNF
7/8 " THREAD
WRENCH
FLATS

Ø 11/4 "
"P"
PIN
DIA.
ELKONITE®
10W3
FACE
.250

Nut Screw Ceramic Coated Elkonite®

CMW® 3
Welding Thread "P" Spring Stainless Steel Faced
Base
Assemblies Size Pin Cap
2 13/ 16 "
16-37826-M10 10MM .423 16-37826 16-950065-01 16-950064-M10 16-37826-CM10
16-37826-M11 11MM .463 16-37826 16-950065-01 16-950064-M11 16-37826-CM11
16-37826-M12 12MM .502 16-37826 16-950065-01 16-950064-M12 16-37826-CM12

1/8 - 27
NPT
5/8
- 18 UNF
11/ 8 " THREAD
WRENCH
FLATS
20 ORDER BY CMW PART NUMBER ONLY
 CONTACTS
CHAMELEON/MAX-LIFE™ STUD WELDING ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

Ø 5/8"
ELKONITE®
10W3 "H" Stud Screw CMW® 3 Ceramic Coated Elkonite®
SLEEVE Welding Thread "H" Base Stainless Steel Faced
FACE
I.D.
Assemblies Size Sleeve Cap

16-37325-116 #4 .116 16-37325 16-953116 16-37325-C116

1 1/2" 16-37325-132 #5 .132 16-37325 16-953132 16-37325-C132
16-37325-140 #6 .140 16-37325 16-953140 16-37325-C140
16-37325-169 #8 .169 16-37325 16-953169 16-37325-C169
2 7/ 8" 16-37325-169 4MM .169 16-37325 16-953169 16-37325-C169
16-37325-191 #10 .191 16-37325 16-953191 16-37325-C191
16-37325-204 5MM .204 16-37325 16-953204 16-37325-C204
1/16 - 27
NPT 16-37325-220 #12 .220 16-37325 16-953220 16-37325-C220
16-37325-243 6MM .243 16-37325 16-953243S 16-37325-C243
16-37325-254 .250 .254 16-37325 16-953254S 16-37325-C254

#5 R.W.M.A.
ELECTRODE TAPER

Ø 1"
ELKONITE®
10W3 "H"
FACE SLEEVE
I.D.

Stud Screw CMW® 3 Ceramic Coated Elkonite®

Welding Thread "H" Base Stainless Steel Faced
2" Assemblies Size Sleeve Cap
2 13/16 "
16-37525-243 6MM .243 16-37825 16-953243 16-37525-C243
16-37525-254 .250 .254 16-37825 16-953254 16-37525-C254
16-37525-320 .312 .320 16-37825 16-953320 16-37525-C320
16-37525-320 8MM .320 16-37825 16-953320 16-37525-C320
16-37525-380 .375 .380 16-37825 16-953380 16-37525-C380

1/16 - 27
NPT

5/ 8 -18 UNF
7/ 8 " THREAD
WRENCH
FLATS

Ø 1 1/ 4"
ELKONITE®
10W3 "H"
FACE SLEEVE
I.D.
Stud Screw CMW® 3 Ceramic Coated Elkonite®
Welding Thread "H" Base Stainless Steel Faced
Assemblies Size Sleeve Cap

2" 16-37526-399 10MM .399 16-37526 16-953399 16-37526-C399

16-37526-444 .438 .444 16-37526 16-953444 16-37526-C444
2 13/16 "
16-37526-477 12MM .477 16-37526 16-953477 16-37526-C477
16-37526-502 .500 .502 16-37526 16-953502 16-37526-C502
16-37526-630 .625 .630 16-37526 16-953630 16-37526-C630

FOR 5/8" DIA. • USE COOLING CHAMBER 18-1340 P.24

1/16 - 27
• MAY BE USED WITH HOLDERS 18-169, 18-170, 18-171 P.29
NPT
FOR 1" DIA. • FOR USE WITH PLATEN MOUNTED HOLDERS USE ADAPTER 18-7743 P.27
5/ 8 -18 UNF
AND 1 1/4" DIA. • HOLDERS WITH 5RW TAPERS USE ADAPTERS 18-7741, 18-7742 P.23
THREAD
• USE COOLING CHAMBERS 18-1342, 18-1343 P.24
11 /8 "
WRENCH
FLATS

ORDER BY CMW PART NUMBER ONLY BENT DIMENSIONS REFERENCE ONLY 21

 CONTACTS
SELF-PILOTING NUT WELDING ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

The shanks are CMW ® 3. Facings are ELKONITE®

Note: locating pins are made of specially treated aluminum, having a surface hardness of approximately 55 Rockwell C on outside surface.

ASSEMBLED ELECTRODE For Nut

See page 6 for Metric conversions Taper Pin Thread Pin
See page 7 for Taper dimensions Size Dia. Size Length
D “N” “N” “L” Part No.
16-3764-XX .082 #4 .093 16-3764-04
ELKONITE® 10W3 Typical Set-Up for
5RW .093 #5 .093 16-3764-05
Self Piloting Nuts
5 .100 #6 .093 16-3764-06
/8
.107 3.5 mm .093 16-3764-M3-5
N
5RW .123 4.0 mm .156 16-3764-M4
2MT
2" L
2MT .129 #8 .156 16-3764-08
.143 #10 .156 16-3764-10
.156 5.0 mm .156 16-3764-M5
Upper
Electrode
5/8 Dia. use
632050 p. 14
1 Dia.
16-1392 p. 25
1-1/4 use
16-3765-XX .166 #12 .375 16-3765-12 16-1394 p. 25

ELKONITE® 10W3 .189 6.0 mm .375 16-3765-M6

5RW
.192 1/4 .375 16-3765-25
N 1"
.223 7.0 mm .375 16-3765-M7
5RW
2MT 2" L .252 8.0 mm .375 16-3765-M8
2MT
.257 5/16 .375 16-3765-31
.291 9.0 mm .375 16-3765-M9

16-3766-XX .306 3/8 .375 16-3766-38

ELKONITE® 10W3
.320 10 mm .375 16-3766-M10
5RW
.359 11 mm .375 16-3766-M11
N 13/ 4"
.361 7/16 .375 16-3766-44
5RW .388 12 mm .375 16-3766-M12
2MT
2MT
2" L .415 1/2 .375 16-3766-50
.455 14 mm .375 16-3766-M14

22 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
NON-PILOTING NUT WELDING ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

The shanks are CMW® 3. Facings are ELKONITE®

Note: locating pins are made of specially treated aluminum, having a surface hardness of approximately 55 Rockwell C on outside surface.

ASSEMBLED ELECTRODE For Nut

See page 6 for Metric conversions Taper Pin Pilot Pilot Thread
See page 7 for Taper dimensions or Thd. Dia. Length Dia. Size
Size “N” “L” “P” “N” Part No.
ELKONITE® 10W3
16-3774-XX .082 .312 .142 #4 16-3774-04
.093 .312 .158 #5 16-3774-05 Typical
N P 5/ 8 5RW Set-Up for
.100 .312 .173 #6 16-3774-06
Non Piloting Nuts
L .129 .312 .198 #8 16-3774-08
21/2" 3/64" 2MT
5RW .143 .312 .220 #10 16-3774-10
2MT Upper
.186 .312 .250 6mm 16-3774-M6 Electrode

16-3775-XX ELKONITE® 10W3

.166 .312 .250 #12 16-3775-12 5/8 Dia. use
632050 p. 14
.186 .312 .250 6 mm 16-3775-M6 1 Dia. use
16-1392 p. 25
N P 1" 5RW .192 .312 .283 1/4 16-3775-25 1 1/4 Dia. use
16-1394 p. 25
.252 .312 .283 8 mm 16-3775-M8
5RW L 2MT .257 .312 .345 5/16 16-3775-31
2MT
3" 1/ 16"
.322 .312 .347 10 mm 16-3775-M10

16-3785-XX .166 .375 .250 #12 16-3785-12

ELKONITE® 10W3
.186 .375 .269 6 mm 16-3785-M6
5/8-18 .192 .375 .283 1/4 16-3785-25 Pin is pushed down by the
N P 1" Upper Electrode
.252 .375 .348 8 mm 16-3785-M8
Thd. .257 .375 .345 5/16 16-3785-31
5/8-18THD L .320 .375 .427 10 mm 16-3785-M10
11/2" 1/ 16"
.359 .375 .466 11 mm 16-3785-M11
.388 .375 .470 12 mm 16-3785-M12

16-3786-XX
.166 .375 .250 #12 16-3786-12
.186 .375 .269 6 mm 16-3786-M6
ELKONITE® 10W3 See
.192 .375 .283 1/4 16-3786-25 Adapter
Below
5/8-18 .252 .375 .348 8 mm 16-3786-M8 For
5RW 2MT
N P11/4" .257 .375 .345 5/16 16-3786-31
.306 .375 .408 3/8 16-3786-38
.320 .375 .427 10 mm 16-3786-M10
5/8-18THD L
11/2" 1/ 16" Thd. .359 .375 .466 11 mm 16-3786-M11
.361 .375 .470 7/16 16-3786-44
.388 .375 .470 12 mm 16-3786-M12
.415 .375 .533 1/2 16-3786-50

Use with 5/8 -18 Thread assemblies to convert to 5RW or 2MT Taper Shank
Note: Electrode Assemblies
A A Part No. Use With 18-3785-XX and 18-3786-XX
5/8-18THD 1 18-7741 16-3785-XX May also be used with 5/8-18
5RW 1
1 /4 18-7742 16-3786-XX Thread Holders 18-169, 18-170 and
2MT 18-171 as shown on page 29.
5/ 8"

13/4"

ORDER BY CMW PART NUMBER ONLY 23

 CONTACTS
STUD WELDING ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

Stud Welding Electrode facings are Elkonite® 10W3. The shank is CMW® 3.
Note: insulation sleeves are made of specially treated aluminum having a surface hardness of approximately 55 Rockwell C on both I.D. and O.D.

*Screw Insulation

ASSEMBLED ELECTRODE Thread I.D. Part No. Assembled Electrode

Size H.
Depth B .375 .750 1.125
See page 6 for Metric conversions #4 .116 16-3724-1161 16-3724-1162 16-3724-1163
See page 7 for Taper dimensions #5 .132 16-3724-1321 16-3724-1322 16-3724-1323
ELKONITE® 10W3
Depth B .500 1.00 1.500
#6 .140 16-3724-1401 16-3724-1402 16-3724-1403
H 5/8 — .150 16-3724-1501 16-3724-1502 16-3724-1503
— .157 16-3724-1571 16-3724-1572 16-3724-1573
#8 .169 16-3724-1691 16-3724-1692 16-3724-1693
5RW B
2MT
21/2 Depth B .750 1.500
16-3724-XXXX #10 .191 16-3724-1911 16-3724-1912
#12 .220 16-3724-2201 16-3724-2202
.250 .254 16-3724-2541 16-3724-2542

7/ 8 ELKONITE® 10W3
Depth B .750 1.500
.250 .254 16-3725-2541 16-3725-2542
H 1"
Depth B 1.00 2.00
— .277 16-3725-2771 16-3725-2772
5RW .312 .317 (8mm) 16-3725-3171 16-3725-3172
2MT B — .339 16-3725-3391 16-3725-3392
3" — .365 16-3725-3651 16-3725-3652
.375 .380 16-3725-3801 16-3725-3802
16-3725-XXXX

ELKONITE® 10W3
Depth B 1.00 2.00
7/8 — .401 16-3726-4011 16-3726-4012
— .427 16-3726-4271 16-3726-4272
.437 .444 16-3726-4441 16-3726-4442
H 11/4" .500 .502 16-3726-5021 16-3726-5022

Depth B 1.00 2.00

5RW
2MT B — .552 16-3726-5521 16-3726-5522
31/4" .625 .630 16-3726-6301 16-3726-6302
— .676 16-3726-6761 16-3726-6762
16-3726-XXXX — .801 16-3726-8011 16-3726-8012

CMW External Water Cooling Chambers are designed to

For upper electrode use standard
electrode: provide supplementary cooling in special, hard-to-cool
5
/ 8 Dia. 632050 page 14 applications. These cast aluminum jackets are securely
1 Dia. 16-1392
1
page 25 sealed and locked in position over the external surface of
1 / 4 Dia. 16-1394 page 25 5/8", 7/8", 1", or 1 1/4" diameter electrodes. Standard water
nipples connect to the regular water inlet and outlet hoses
For Stud Use Cooling of these external cooling chambers.
Electrode Chamber CMW External Water Cooling Chambers are also rec-
16-3724-XXXX 18-1340
16-3725-XXXX 18-1342 ommended for additional cooling capacity on internally
16-3726-XXXX 18-1343 cooled applications operating at elevated temperatures.
See See One Piece Aluminum Castings—Rubber “O” Ring
Above Above
Seals—Standard Water Nipples—Allen Head Set-Screw
Lock-On.

B EXTERNAL ELECTRODE COOLING CHAMBERS

A
To Fit
PART A Dia. O.D. Overall
NO. Electrode B Length C
5
18-1340 /8 11 /4 11 / 2
7
C 18-1341 /8 11 /2 11 / 2
18-1342 1 13 /4 11 / 2
18-1343 11 /4 2 17 / 8

24 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
BACK-UP ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING
SWIVEL HEAD BACK-UP ELECTRODES
Standard Material: Shank-CMW ® 3, Cap-CMW ® 3 optional material available on special order: Cap-CMW® 100; ELKONITE® and ELKON® facing.
Water Face
See page 6 for Metric conversions Type Part No. Taper Hole Dia. Dia.
D F H
WRENCH
FLATS 16-2304 4RW 1MT 9/32 7/8
Thru 16-2305 5RW 2MT 3/8
H 16-2302 4RW 1MT 9/32 1
F
Hole 16-2303 5RW 2MT 3/8
D WATER 16-2300 4RW 1MT 9/32 1-1/4
HOLE 113 /16 “O” Ring 16-2301 5RW 2MT 3/8
1
2 /64 16-2306 5RW 2MT 3/8 1-1/2
WRENCH
FLATS
16-2314 4RW 1MT 9/32
16-2315 5RW 2MT 3/8 7/8

F H Blind 16-2312 4RW 1MT 9/32 1

16-2313 5RW 2MT 3/8
D Hole 16-2310 4RW 1MT 9/32
WATER 1-1/4
1
HOLE 1 / 2 16-2311 5RW 2MT 3/8
21 /64 16-2316 5RW 2MT 3/8 1-1/2
WRENCH
FLATS 16-23129 4RW 1MT 9/32 1
Blind Hole 16-23139 5RW 2MT 3/8
F H 16-23109 4RW 1MT 9/32
With Spring 1-1/4
16-23119 5RW 2MT 3/8
D
WATER 11/ 8 and Ball
HOLE
16-23169 4RW 1MT 9/32
21 /64 16-23179 5RW 2MT 3/8 1-1/2

LARGE DIAMETER FLAT FACED BACK-UP ELECTRODES

Overall Water Hole Weld Face Shank
Weld Face Length Taper Dia. Depth Dia. Length
See page 6 for Metric conversions Part No. Material C D F G H T

F H 16-3012 CMW® 3 4RW 3/4

® 1-1/4 or 9/32 7/8 1 5/8
D 16-3010 CMW 3
T 16-3030 CMW® 3 1MT 1-1/4
G
C
16-3021 CMW® 3 7/8
F H
5RW
16-3020 CMW® 3 1-1/2 or 3/8 1-1/8 1 7/8
D 2MT 1-1/4
T 16-3040 CMW® 3
G 1-1/2
C 16-3050 CMW® 3

16-1392 ELKONITE ® 10W3 2 1-1/2 1

F H 5RW
16-1393 ELKONITE ® 10W3 3 5/8 1
or 3/8 7/8
D 16-1394 ELKONITE ® 10W3 2 2MT 1-1/2 1-1/4
T
G
1
/4 16-1395 ELKONITE ® 10W3 3-1/4 5/8 1-1/4
C
SQUARE AND RECTANGULAR FACED BACK-UP ELECTRODES
See page 6 Electrodes of other tapers and alloys available upon application.
For Metric
Conversion

9
/32 2 3
/8 2
9
/32 1 1 /2
3
/8 1 1 /2
4RW
5RW
4RW 5RW 1MT
2MT
1MT 2MT
7 7 1
/8 1
/2 /8 /2 7 5
/8 7
/8 5
/8
/8
1 5 /8 1 5 /8 1 /8 5 1 5 /8
16-382158 CMW ® 3 16-382160 CMW ® 3 16-3111 CMW ® 3 CASTING 16-3121 CMW ® 3 CASTING
CASTING CASTING
5
9 1 3
/8 /8 3
/8
/32 /2 15
/16
13
/16 1
/2
7
/8 5
/8
4RW 5RW 5RW 7
/8 1
1MT 2MT 2MT /2
1 1 /2 1 3 /4 1 5 /8
16-3110 CMW® 3 COLD FORMED 16-3120 CMW® 3 COLD FORMED 16-384110 CMW ® 3 COLD FORMED

ORDER BY CMW PART NUMBER ONLY 25

 CONTACTS
THREADED ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING
See page 6 for Metric conversions

CMW®3 Female Threaded Electrodes

C D A E G F K H
CMW® 3 Water Water Over Wrench Welding FLAT
Part No. Overall Major Thread Hole Hole Wrench Flat Face
Length Thread Dia. Depth Depth Dia. Flats Length Dia.
7 3
336508 1 /8 /4 1
5
336510 2 / 8-18 11 / 4 3
/4 11 / 4 37
/ 64 1 3
/4 11 / 4
336512 11 / 2 11 / 4 7
/8 11 / 2
7 3 3
326508 1 /8 /4 /8
5
326510 2 / 8-18 11 / 4 3
/4 1
1 /4 37
/ 64 1 3
/4 1
/2
326512 11 / 2 11 / 4 7
/8 5
/8
TRUNCATED

CMW®3 Male Threaded Electrodes

C D A E G F K H
CMW® 3 Water Water Over Wrench Welding
Part No. Overall Major Thread Hole Hole Wrench Flat Face
Length Thread Dia. Depth Depth Dia. Flats Length Dia.
5 7 9 5 3 5 7
FLAT
330507 / 8-18 /8 / 16 / 16 /4 /8 /8
5 9 5 7 5
330508 / 8-18 1 / 16 / 16 /8 /8 1
5 3 15 5 5 5 3
335506 / 8-11 /4 / 32 / 16 /8 /8 /4
5 7 15
335507 2 / 8-11 /8 / 32 11 / 4 5
/ 16 3
/4 3
/4 7
/8
3 5 3 7 7
335508 / 4-10 1 /8 /8 /8 /8 1
3
335510 / 4-10 11 / 4 5
/8 3
/8 1 3
/4 11 / 4
7
335512 / 8-9 11 / 2 3
/4 1
/2 11 / 4 7
/8 11 / 2
5 3 15 5 5 1 1
325506 / 8-11 /4 / 32 / 16 /8 /2 /4 TRUNCATED
5 7 15 5 3 5 5
325507 / 8-11 /8 / 32 / 16 /4 /8 / 16
3 5 1 3 7 5 3
325508 2 / 4-10 1 /8 1 /4 /8 /8 /8 /8
3
325510 / 4-10 11 / 4 5
/8 3
/8 1 3
/4 1
/2

ELKONITE® Faced Female Threaded Electrodes

C D A E G F K H B FLAT
ELKONITE ® Water Water Over Wrench Welding
10W3 Overall Major Thread Hole Hole Wrench Flat Face ELKONITE
Part No. Length Thread Dia. Depth Depth Dia. Flats Length Dia. Thickness
7 1
636308 1 /8 /2 1
636310 11 / 2 5
/ 8-18 11 / 4 3
/4 1 37
/ 64 1 1
/2 11 / 4 1
/4
636312 11 / 2 11 / 4 3
/4 11 / 2
7 1 5
626308 1 /8 /2 /8
1 5
626310 1 /2 / 8-18 11 / 4 3
/4 1 37
/ 64 1 1
/2 5
/8 1
/4
CENTERED

ELKONITE® Faced Male Threaded Electrodes

C D A E G F H B
ELKONITE ® Water Water Over Welding
10W3 Overall Major Thread Hole Hole Wrench Face ELKONITE
Part No. Length Thread Dia. Depth Depth Dia. Flats Dia. Thickness
CENTERED
620307 11 / 2 5
/ 8-18 7
/8 9
/ 16 1 5
/ 16 3
/4 1
/2 1
/4
625206 11 / 4 5
/ 8-11 3
/4 15
/ 32 7
/8 5
/ 16 5
/8 1
/2 3
/ 16
625308 15 / 8 3
/ 4-10 1 5
/8 13 / 16 3
/8 7
/8 5
/8 1
/4

*Bodies for ELKONITE ® Faced Electrodes are CMW® 3 Material

26 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
ADAPTERS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

MALE TAPER TO FEMALE TAPER ADAPTERS

L ADAPTER MALE TAPER FEMALE TAPER Length Hex.
/
1 2 PART Minor Dia. @ Major Under Over Overall
1
D NO. Size Dia. / 2" Size Dia. Head Flats Length
L J K D A M H C

K J A 18-741 5RW or 2MT .588 .613 4RW or 1MT .463 7

/8 7
/8 1 3/ 16
18-742 7RW or 3MT .819 .844 5RW or 2MT .613 3
1 / 16 1 11 / 2
18-7414 6RW .706 .731 5RW .613 7
/8 1 1 3/ 16
M
H 18-7415 4RW or 1MT .438 .463 5RW or 2MT .613 5
/8 7
/8 13 / 4
C
18-7416 5RW or 2MT .588 .613 6RW .731 7
/8 1 21 / 4
MALE PIPE THREAD TO FEMALE TAPER ADAPTERS
MALE FEMALE TAPER Length Hex.
L D ADAPTER
THREAD Under Over Overall
PART
Size Size Maj. Dia. Head Flats Length
NO.
L D A M H C
1 5 7
18-746-07 / 2-14 pipe 4RW or 1MT .463 /8 1 /8
A 1
/ 2-14 pipe 5RW or 2MT .613 5
/8 1 7
/8
18-747-07
1 9 7 7
18-7465-07 / 2-14 pipe 5RW MALE CAP .414 /16 /8 /8
5 9 3
M 18-748-06 / 8-14 pipe 4RW or 1MT .463 /16 1 /4
5 9 3
C H 18-749-06 / 8-14 pipe 5RW or 2MT .613 /16 1 /4
3 7
C* 18-756-09 / 4-14 pipe 4RW or 1MT .463 /8 11 / 4 11 / 8
3 7
18-757-09 / 4-14 pipe 5RW or 2MT .613 /8 11 / 4 11 / 8
*Adapters of longer lengths available 18-7576-09 3
/ 4-14 pipe 6RW .731 7
/8 11 / 4 11 / 8
in 1/8" increments upon request

MALE THREAD TO FEMALE TAPER ADAPTERS

MALE FEMALE TAPER Length Dia. Sealing
ADAPTER
THREAD Major Under Or Overall Ring
Sealing PART
Size Size Dia. Head Hex Length Part
Ring NO.
L D A M H C No.
5 9 7 13
L 18-750 /8-18 4RW or 1MT .463 / 16 / 8 Hex / 16 18-10060-11
5 9
D 18-751 /8-18 5RW or 2MT .613 / 16 1 Hex 111/ 16 18-10060-11
3 9
*18-755 /4-10 5RW or 2MT .613 / 16 1 Dia. 19/ 16 18-10060-12
7 5 13
A 18-770 /8-14 4RW or 1MT .463 /8 1 Hex / 16 18-76460
7 5 13
18-771 /8-14 5RW or 2MT .613 /8 1 Hex / 16 18-76460
5
18-7743 1-14 5/8 - 18 THD – /8 11 /4 Hex 1 18-10060-17
9
M
18-785 1-14 4RW or 1MT .463 / 16 11 /4 Hex 13
/ 16 18-10060-17
9
H 18-786 1-14 5RW or 2MT .613 / 16 11 /4 Hex 13
/ 16 18-10060-17
C 18-7863 1-14 6RW .731 3
/4 11 /4 Hex 13/ 4 18-10060-17
3
*This part has / 4" wrench flats. 18-787 1-14 7RW or 3 MT .844 3
/4 11 /4 Hex 21/ 8 18-10060-17
9
18-7875 1-14 5RW or 2MT .613 / 16 11 /4 Dia. 11
/ 16 18-10060-17
5
18-7876 1-14 6RW .731 /8 11 /4 Dia. 7
/8 18-10060-17

FEMALE THREAD TO FEMALE TAPER ADAPTERS

C FEMALE FEMALE TAPER Over
L ADAPTER THREAD Major Outside Wrench Overall
D PART Size Size Dia. Dia. FLats Length
NO. L D A B H C
5 3
H 18-753 / 8-18 4RW or 1MT .463 1 /4 15 / 8
A 5 3
18-754 / 8-18 5RW or 2MT .613 1 /4 15 / 8
3
18-7591 / 4-10 4RW or 1MT .463 11 / 4 Hex 11 / 4 13 / 4
B 18-7592 3
/ 4-10 5RW or 2MT .613 11 / 4 Hex 11 / 4 13 / 4
1 1/ 2
1 5/ 32 5
/8-18

1
21
/ 32 3
/8

1 1/ 4
1
/ 2 Pipe USE WITH 1/2 PIPE THREAD
Thread ADAPTERS LISTED ON THIS ADAPTER PART NO. 18-752
PAGE

1 1/ 2 See page 6 for Metric conversions

See page 7 for Taper dimensions

See page 30 for Ejector type Adapters

18-82650 ADAPTER ASSY 1/2 - 14 PIPE THD.
ORDER BY CMW PART NUMBER ONLY 27
 CONTACTS
TYPICAL SET-UP COMBINATIONS USING CMW WELDING PRODUCTS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

COMBINATIONS OF CMW
HOLDERS, ADAPTERS AND ELECTRODES CAN
PERFORM MOST RESISTANCE
WELDING APPLICATIONS
Many of these combinations make possible welding operations that could
have been done heretofore only by the use of “expensive and special”
holders and electrodes. A few ideas of the many possible combinations
are shown for your guidance.

600 Series Universal 200 Series Straight

Holders Ejector
with Standard Holder with Pointed
Electrodes Double Bend Electrode
950 Series
Paddle Holder
with Socket 200 Series Straight
Offset Electrode Ejector Holder
with Offset Double
Bend Electrode

500 Series Heavy

600 Series Universal Holders Duty Holder with
with Pointed Single Bend Electrodes 30" Offset Electrode
100 Series Straight
Holder with Pointed
950 Series Electrode
Paddle Holder
with Socket
Truncated Cone
Electrode

100 Series Straight Holder

100 Series Straight with Pointed
Holder with Pointed Electrode
Electrode

950 Series
500 Series Heavy Paddle Holder
Duty Offset Holder with Socket
with Dome Electrode Offset Electrode
400 Series Light Duty
600 Series Offset Holders with
Universal Holder Pointed Electrodes
(30" “T” Connection)
with Dome Electrode

900 Series Light

Duty
Universal
Holder
with Socket

400 Series Light Duty

Offset Holder with 100 Series Straight Holder
Dome Single Bend with Pointed Electrode
Electrode

300 Series Premium

Ejector Holder with
Offset Electrode 600 Series Universal
Holder with Pointed
Electrode
400 Series Light Duty
Holder–Reverse Shank
with Offset Electrode

950 Series Paddle 600 Series Universal Holder

Holder with 900 Series Light Duty
Universal Holder with with Single Bend
Socket Radius Electrode
Electrode Socket Radius
Electrode

28
 CONTACTS
100 SERIES (NON-EJECTOR) WATER COOLED ELECTRODE HOLDERS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING
5 18-10041 -- 4RW Water Conn. Body
18-10042 -- All Other Water Conn. Bodies

18-10085 15
Retaining 7 18-10060-11 -- Sealing Ring 4RW
18-10061-14 -- All Other Sizes Sealing Ring
12 BARREL
Washer
4RW Only 8 STATIONARY TUBE D
60O 17 18-10081 -- 4RW Tube Retainer
E
18-10082 - All Other Tube Retainer SLIDING TUBE 11

AB
1 1/2"
OVER
FLATS

4 18-10050 C
Water Nipple
Fits Std. 3/8" Hose
/
25
32

HOLDER SIZE
Water Connection
HOLDER A B C D E Head
ASSEMBLY Engage- Sub-Assembly 8 11 12
PART Major Barrel Barrel Taper ment Include Parts: Stationary Sliding Barrel
NUMBER Taper Dia. Length Or with Std. 4 5 7 8 15 17 Tube Tube
Dia. Thread Electrode
3
18-101 /4 18-11110-3
7 1
18-102 .463 /8 3 4RW /2 18-10091-3 18-10044-3 18-10046-3 18-11210-3
18-103 1 1MT 18-11310-3
18-104 11/4 18-11410-3
TAPERED 18-106 1 18-11610-3
D 18-107 .625 11/4 3 5RW 3
/4 18-10092-3 18-10045-3 18-10047-3 18-11710-3
18-108 11/2 2MT 18-11810-3
3
18-111 /4 18-11110-8
A B 18-112 .463 7
/8 8 4RW 1
/2 18-10091-8 18-10044-8 18-10046-8 18-11210-8
18-113 1 1MT 18-11310-8
18-114 11/4 18-11410-8
E
C 18-116 1 18-11610-8
18-117 .625 11/4 8 5RW 3
/4 18-10092-8 18-10045-8 18-10047-8 18-11710-8
18-118 11/2 2MT 18-11810-8
18-119 11/4 7RW 18-11910-8
18-120 .875 11/2 8 3MT 11/8 18-10092-8 18-10045-8 18-10047-8 18-12010-8
3
18-131 /4 18-11110-12
7 1
THREADED 18-132 /8 12 4RW /2 18-10091-12 18-10044-12 18-10046-8 18-11210-12
D 18-133 .463 1 1MT 18-11310-12
18-134 11/4 18-11410-12
18-136 1 18-11610-12
18-137 .625 11/4 12 5RW 3
/4 18-10092-12 18-10045-12 18-10047-8 18-11710-12
B
18-138 11/2 2MT 18-11810-12
18-169 1 18-16910-8
18-170 — 11/4 8 5
/8-18 9
/16 18-10092-8 18-10045-8 18-10047-8 18-17010-8
E
18-171 11/2 18-17110-8
C
18-172 1 18-17210-8
18-173 — 11/4 8 7
/8-14 9
/16 18-10092-8 18-10045-8 18-10047-8 18-17310-8
18-174 11/2 18-17410-8
18-175 11/4 18-17510-8
18-176 — 11/2 8 1-14 3
/4 18-10092-8 18-10045-8 18-10047-8 18-17610-8

Holder
ADAPTERS Assembly Adapter Attachment
FOR USE No. Part No. Page Description
WITH THREADED
18-750 29 4RW 1MT Female
Holder 18-169 Use 18-751 27 5RW 2MT Female
Assembly Adapter 18-170 With 18-752 27 5
/8-18 M. Thd.
18-171 18-811 36 #1 Size “Nu-Twist”®

18-770 27 4RW 1MT Female

18-172 Use 18-771 27 5RW 2MT Female May also be used with universal
18-173 With
Adapters having 7/8-14 Male thread
18-174
SEE PAGE 35

18-785 27 4RW 1MT Female

18-786 27 5RW 2MT Female
18-175 Use 18-7863 27 6RW Female May also be used with universal
With
18-787 27 7RW 3MT Female Adapters having 1-14 Male thread
SEE PAGE 35
18-176 18-812 36 #2 Size “Nu-Twist”®

ORDER BY CMW PART NUMBER ONLY 29

 CONTACTS
200 SERIES (EJECTOR) WATER COOLED ELECTRODE HOLDERS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING
7RW 3MT MORSE TAPER ASSY.
Adapter 18-20033
18-10050 WATER NIPPLES
4 FIT STD. 3/8 HOSE

5 18-20042B WATER
ODY
CONN.
8 STATIONARY TUBE
AB
7 4RW–18-10060-11 SEALING RING
5RW–18-10061-14 SEALING RING
12 BARREL
6 18-20051-4RW 1MT THD. ADAPT 11 E
18-20052 OTHER THD. ADAPT
3 SEALING RING 18-20071–4RW 1MT KO SPRING SLIDING C
18-10060-12 9 18-20072 OTHER KO SPRING TUBE D
1 18-20021
KO PLUG
4RW 1MT A
1 18-20022 B
KO PLUG
5RW 2MT
10 KO TUBE E
5
/16 123/32 C

HOLDER SIZE
HOLDER A B C D E Water Conn. KO Tube
ASSEMBLY Major Barrel Barrel Taper Engmt. Hd. Sub-Assy. Sub-Assembly 8 10 11 12
PART Taper Dia. Length Or with/Std. Include Parts: Include Parts: Stationary KO Tube Sliding Barrel
NUMBER Dia. Thread Elect. 1 3 4 5 6 7 8 9 10 11 Tube Tube
3
TAPERED 18-201 /4 18-11110-3
7 1
18-202 .463 /8 3 4RW /2 18-20091 18-20095-3 18-10044-3 18-20031-3 18-10046-3 18-11210-3
18-203 1 1MT 18-11310-3
SLIDING 18-204 11/4 18-11410-3
TUBE D
18-206 1 18-11610-3
18-207 .625 11/4 3 5RW 3
/4 18-20092 18-20096-3 18-10045-3 18-20032-3 18-10047-3 18-11710-3
18-208 11/2 2MT 18-11810-3
A 18-211 3
/4 18-11110-8
B 18-212 .463 7
/8 8 4RW 1
/2 18-20091 18-20095-8 18-10044-8 18-20031-8 18-10046-8 18-11210-8
18-213 1 1MT 18-11310-8
E 18-214 1
1 /4 18-11410-8
18-216 1 18-11610-8
18-217 .625 11/4 8 5RW 3
/4 18-20092 18-20096-8 18-10045-8 18-20032-8 18-10047-8 18-11710-8
18-218 11/2 2MT 18-11810-8
18-219 11/4 7RW 18-20032-58 18-11910-8
18-220 .875 11/2 8 3MT 1 1/8 18-20092 18-20096-58 18-10045-8 & 18-20033 18-10047-8 18-12010-8
3
18-231 /4 18-11110-12
18-232 .463 /
7 8 12 4RW 1 2/ 18-20091 18-20095-12 18-10044-12 18-20031-12 18-10046-8 18-11210-12
18-233 1 1MT 18-11310-12
18-234 11/4 18-11410-12
18-236 1 18-11610-12
18-237 .625 11/4 12 5RW 3
/4 18-20092 18-20096-12 18-10045-12 18-20032-12 18-10047-8 18-11710-12
18-238 11/2 2MT 18-11810-12
THREADED D 18-236-18 1 18-11610-18
18-237-18 .625 11/4 18 5RW 3
/4 18-20092 18-20096-18 18-10045-12 18-20032-18 18-10047-29 18-11710-18
18-238-18 11/2 2MT 18-11810-18
18-272 1 18-17210-8
B
18-273 — 11/4 8 7
/8 -14 9
/16 18-20092 18-20096-8 18-10045-8 18-20032-8 18-10047-8 18-17310-8
18-274 11/2 18-17410-8

E 18-275 11/4 18-17510-8

C 18-276 — 11/2 8 1-14 3 4/ 18-20092 18-20096-8 18-10045-8 18-20032-8 18-10047-8 18-17610-8
EJECTOR TYPE ADAPTERS 7 /8 -14 THREAD
7
/8-14 THREADED MALE FEMALE TAPER Length Hex Sealing KO
USE METALLIC SEAL ADAPTER THREAD Major Under Over Overall Ring Plug
KO 18-76460 PART Size Size Diameter Head Flats Length Part Part
PLUG NO. L D A M H C No. No.
D
18-7702 / -14
78 4RW 1MT .463 5/8 1 13/16 18-76460 18-78501
7
18-7712 / -14
8 5RW 2MT .625 1/2 1 1-1/16 18-76460 18-7712-3
A
Part No. Description Threaded Holder

} 18-272 /8 -14 Fem. Thd. 1 Dia.

7
Use With Threaded Ejector
M Holders to make Replaceable 18-273 7
/ 8-14 Fem. Thd. 1 1/ 4 Dia.
L H Taper Holders
C 18-274 7
/ 8-14 Fem. Thd. 1 1/ 2 Dia.
1-14 THREADED EJECTOR TYPE ADAPTERS 1-14 THREAD
KO M “O” RING SEAL
PLUG ADAPTER 18-7852 1-14 4RW 1MT .463 9/16 1-1/4 13/16 18-10060-17 18-78501
L D 18-7862 1-14 5RW 2MT .625 7/16 1-1/4 1-1/16 18-10060-17 18-7712-3
18-7864 1-14 6RW .750 3/4 1-1/4 1-3/4 18-10060-17 18-78650
A 18-7872 1-14 7RW 3MT .875 3/4 1-1/4 2-1/8 18-10060-17 18-78701

Part No. Description Threaded Holder

HOLDER ASSY
C
H Use With Threaded Ejector
Holders to make Replaceable
Taper Holders } 18-275
18-276
1-14 Fem. Thd. 1 1/ 4 Dia.
1-14 Fem. Thd. 1 1/ 2 Dia.

30 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
300 SERIES PREMIUM (EJECTOR) WATER COOLED ELECTRODE HOLDERS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

HOLDER BARRELS ARE CENTERLESS GROUND CMW®3 MATERIAL Adapter

18-20033

18-10050 WATER NIPPLES

4 FIT STD. 3 /8 HOSE AB
18-20042 WATER CONN. BODY
5 8 STATIONARY TUBE
4RW - 18-10060-11 SEALING RING
7 5RW - 18-10061-14 SEALING RING 12 BARREL E
18-20051-4RW THD. ADAPT C
6 18-20052 OTHER THD. ADAPT
11 SLIDING 7RW TAPER ASSY.
3 SEALING RING
18-10060-12
18-20071–4RW KO SPRING
9 18-20072 OTHER KO SPRING TUBE
D
1 18-20022
KO PLUG
A
B

10 KO TUBE E
5 123/32 C
/16
HOLDER SIZE
TAPERED
SLIDING HOLDER A B C D E Water Conn. KO Tube
ASSEMBLY Major Barrel Barrel Taper Engmt. Hd. Sub-Assy. Sub-Assembly 8 10 11 12
TUBE D PART Taper Dia. Length or w/Std. Include Pts. Include Parts: Stationary KO Tube Sliding Barrel
NUMBER Dia. Thread Elect. 1 3 4 5 6 7 8 9 10 11 Tube Tube

18-317 11/4 5RW 18-31710-8

A 18-318 .625 11/2 8 2MT 3 4 / 18-20092 18-20096-8 18-10045-8 18-20032-8 18-10047-8
B 18-319 11/4 7RW 18-20032-58 18-31910-8
18-320 .875 11/2 8 3MT 1 1/8 18-20092 18-20096-58 18-10045-8 18-20033 18-10047-8 18-32010-8
E
18-337 11/4 5RW 18-31710-12
THREADED D 18-338 .625 11/2 12 2MT 3
/4 18-20092 18-20096-12 18-10045-12 18-20032-12 18-10047-8 18-31810-12
18-339 11/4 7RW 18-20032-62 18-31910-12
18-340 .875 11/2 12 3MT 1 1/8 18-20092 18-20096-62 18-10045-12 & 18-20033 18-10047-8 18-32010-12
B 18-372 1 18-37210-8
18-373 — 1/4 8 7
/8 -14 9
/16 18-20092 18-20096-8 18-10045-8 18-20032-8 18-10047-8 18-37310-8

E 18-375 11/4 18-37510-8

C 18-376 — 11/2 8 1-14 3 4 / 18-20092 18-20096-8 18-10045-8 18-20032-8 18-10047-8 18-37610-8
Note: These threaded holder barrels same as on 600 Series holders page
34.

CMW PREMIUM HOLDER FEATURES

The CMW Premium Electrode Holder Barrels are made from high strength CMW ® 3 material, centerless ground to within
.002" tolerance on diameter and Nickel Plated to resist wear and assure uniform contact resistance of a low magnitude. These
factors, in addition to the sturdy construction of the ejector mechanisms, plus the ample, well constructed water cooling
passage, make these holders ideally suited for use with low frequency, direct current welders, and conventional alternating
current machines using high weld currents.
To make replaceable Taper Holders use Adapters from tables
at bottom of page 30

7
HOLDER 1-14 THREADED
/8 -14 THREADED ASSY.
USE METALLIC SEAL “O” RING
18-76460 KO SEAL
KO PLUG M ADAPTER
PLUG D
D

A A

M
C C
Use Adapters
18-7702
18-7712
4RW 1MT
5RW 2MT } with 7/ 8-14 thd’d. Holders { 18-372 1 Dia.
18-373 11 / 4 Dia.
Use Adapters
18-7852 4RW 1MT
18-7862
18-7864
18-7872
5RW 2MT
6RW
7RW 3MT } with 1-14 thd’d. Holders { 18-375 11 / 4 Dia.
18-376 11 / 2 Dia.

ORDER BY CMW PART NUMBER ONLY 31

 CONTACTS
400 SERIES OFFSET (NON-EJECTOR) WATER COOLED ELECTRODE HOLDERS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

29/32
11 Sliding Tube 18-10050 30o
Water D
8 Stationary
A Tube Nipple 1 1/2 H A
D
For 3/8 Hose

E 1"
F F
1 1/4
E

18-10050
8 Stationary
Water Tube
H Nipple
For 3/8 11 Sliding
Hose Tube
3
90 o HEAD 30o HEAD
CONVENTIONAL
B
CONVENTIONAL
SHANK SHANK

CONVENTIONAL SHANK

HOLDER SIZE
HOLDER Angle A B D E F H 8 11 Angle HOLDER
ASSEMBLY of Major Stationary Sliding of ASSEMBLY
NUMBER Head Taper Shank Taper Engagement with Head Tube Tube Head NUMBER
Dia. Dia. Std. Electrode Height Offset
18-402 7/8 ————
18-403 90o .463 1 4RW 1/2 1-1/16 2 18-40041-1 18-40043-1 90o ————
18-404 1-1/4 1MT ————
18-407 7/8 ————
18-408 90o .625 1 5RW 3/4 1-1/4 2 18-40041-1 18-40043-2 90o ————
18-409 1-1/4 2MT ————
18-422 7/8 ————
18-423 90o .463 1 4RW 1/2 1-1/16 4 18-40041-1 18-40043-1 90o 18-433
18-424 1-1/4 1MT ————
18-428 1 5RW ————
18-429 90o .625 1-1/4 2MT 3/4 1-1/4 4 18-40041-1 18-40043-2 90o 18-439
18-442 7/8 ————
18-443 30o .463 1 4RW 1/2 1 2 18-40041-1 18-40043-1 30o ————
18-444 1-1/4 1MT ————
18-448 1 5RW ————
18-449 30o .625 1-1/4 2MT 3/4 1-1/4 2 18-40041-1 18-40043-2 30o ————
18-462 7/8 ————
18-463 30o .463 1 4RW 1/2 1 4 18-40041-1 18-40043-1 30o ————
18-464 1-1/4 1MT ————
18-468 1 5RW ————
18-469 30o .625 1-1/4 2MT 3/4 1-1/4 4 18-40041-1 18-40043-2 30o ————

Holders of other shank diameters and lengths or tapers and with Reverse Shank are available on request.

REVERSE SHANK

32 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
500 SERIES PREMIUM (EJECTOR) WATER COOLED OFFSET HOLDERS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING
90o HEAD 30o HEAD Stationary Tube
Sliding Tube
18-40043-3 18-50042-2 5RW 2MT Sliding Tube
H 18-40041-3 7RW 3MT 18-40043-3
G Stationary Tube
18-50042-2 5RW 2MT
A D 18-40041-3 7RW 3MT
H 30o
D

E A G

J 11/16
F J
E

Body F
Body
Water Nipple Water Nipple
KO Plug Assy. 18-10050 1 /4
B 18-10050
18-50022 5RW 2MT 4 For 3/8 Hose For 3/8 Hose B
18-50023 7RW 3MT 4
KO Plug Assy.
Seal Ring 18-50022 5RW 2MT
18-10060-10 5RW 2MT Seal Ring
18-10060-10 5RW 2MT 18-50023 7RW 3MT
18-10060-12 7RW 3MT 18-10060-12 7RW 3MT

Sliding Tube
18-40043-3
G Stationary Tube
Threaded
Adapter A 18-50042-2
D Sealing Ring
18-10060-17

E
HOLDERS
F WITH THREADED
ADAPTER
1/4
FOR REPLACEABLE
TAPER
Body
KO Plug Assy. Sealing Ring
18-50022 5RW 2MT 18-10060-10
18-50024 6RW

Std.
HOLDER Angle Major Taper Threaded
ASSEMBLY of Taper Shank Engage- Head Head C.L. Shank Head Adapter
NUMBER Head Dia. Dia. Taper ment Height Dia. Offset Thickness Part No.
A B D E F G H J
HOLDERS
18-502 1 ————
5RW
18-503 90o .625 11 / 4 3
/4 113 /16 1 1/ 4 2 ————
2MT
18-504 11 / 2 1 23/ 32 ————
18-505 11 / 4 7RW ————
18-506 90o .875 11 / 2 3MT 11 /8 27 / 32 1 1/ 2 2 ————
18-522 1 ————
5RW
18-523 90o .625 11 / 4 3
/4 113 /16 1 1/ 4 4 ————
2MT
18-524 11 / 2 ————
18-525 11 / 4 7RW ————
18-526 90o .875 11 / 2 3MT 11 /8 27 / 32 1 1/ 2 4 ————
18-562 1 1 7/ 8 ————
5RW
18-563 30o .625 11 / 4 3
/4 113 /16 1 5/ 16 4 ————
2MT
18-564 11 / 2 ————
18-565 11 / 4 7RW ————
18-566 30o .875 11 / 2 3MT 11 /8 2 7/ 32 1 9/ 16 4 ————
HOLDERS WITH THREADED ADAPTER
3
18-5035 .625 5RW 2MT /4 113/ 16 18-7875
18-5036 90o .750 11/ 4 6RW 7
/8 115/ 16 11 / 4 2 18-7876
3 13
18-5045 .625 5RW 2MT /4 1 / 16 123/ 32 18-7875
18-5046 90o .750 11/ 2 6RW 7
/8 115/ 16 11 / 4 2 18-7876
3 13
18-5235 .625 5RW 2MT /4 1 / 16 18-7875
18-5236 90o .750 11/ 4 6RW 7
/8 115/ 16 11 / 4 4 18-7876
3
18-5245 .625 5RW 2MT /4 113/ 16 18-7875
18-5246 90o .750 11/ 2 6RW 7
/8 115/ 16 11 / 4 4 18-7876
3
18-5635 .625 5RW 2MT /4 113/ 16 17 / 8 18-7875
18-5636 30o .750 11/ 4 6RW 7
/8 115/ 16 11 / 4 4 18-7876
3
18-5645 .625 5RW 2MT /4 113/ 16 18-7875
18-5646 30o .750 11/ 2 6RW 7
/8 115/ 16 11 / 4 4 18-7876

ORDER BY CMW PART NUMBER ONLY 33

 CONTACTS
600 SERIES UNIVERSAL WATER COOLED ELECTRODE HOLDERS METALS
WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

1 5 /8 8
BARREL DIA.
Bb

BARREL
SHANK SUB-ASSEMBLY
WATER CONNECTOR LENGTH ADAPTER
SUB-ASSEMBLY L “T” CONNECTION SUB-ASSEMBLY
SUB-ASSEMBLY
SEE PAGE 35 SHANK
FOR DETAILS OF DIA.
SUB-ASSEMBLIES Bs

Bbl. Shank Shank “T” Bbl. Shank Shank “T”

Part Head Dia. Dia. Length Head Bbl. Conn. Part Head Dia. Dia. Length Head Bbl. Conn.
No. Angle Bb Bs L Assy. Assy. Assy. No. Angle Bb Bs L Assy. Assy. Assy.

4RW 1MT 5RW 2MT

18-601 90o 18-764 18-655 90o 18-780
18-602 30o 1 7/8 3 18-765 18-725 18-656 30o 11/ 2 11/ 4 4 18-781 18-705 18-728
18-603 90o 18-764 18-701 18-653 90o 18-780
18-604 30o 1 1 3 18-765 18-726 18-654 30o 11/ 2 11/ 2 4 18-781 18-705 18-729
18-605 90o 18-764 18-671 Str. 11/ 4 11/ 4 31/ 2 18-704 18-727
18-606 30o 11/ 4 11/ 4 31/ 2 18-765 18-727 18-672 Str. 11/ 2 11/ 2 4 18-705 18-729
18-607 90o 18-764 18-702 18-673 Str. 11/ 2 11/ 4 18-784 18-705 18-728
18-608 30o 11/ 4 11/ 2 4 18-765 18-730 18-674 Str. 11/ 4 11/ 2 4 18-704 18-730
5RW 2MT 5RW 2MT with Threaded Adapter
18-611 90o 18-766 18-6515 90o 18-7805
18-612 30o 1 7/8 3 18-767 18-725 18-6525 30o 11/ 4 11/ 4 31/ 2 18-7815 18-704 18-727
18-613 90o 18-766 18-701 18-6535 90o 18-7805
18-614 30o 1 1 3 18-767 18-726 18-6545 30o 11/ 2 11/ 2 4 18-7815 18-705 18-729
18-615 90o 18-766 6RW with Threaded Adapter
18-616 30o 11/ 4 11/ 4 31/ 2 18-767 18-727
18-6516 90o 18-7806
18-617 90o 18-766 18-702 18-6526 30o 11/ 4 11/ 4 31/ 2 18-7816 18-704 18-727
18-618 30o 1 /41
1 /21
4 18-767 18-730
18-6536 90o 18-7806
18-621 Str. 1 7/8 18-725 18-6546 30o 11/ 2 11/ 2 4 18-7816 18-705 18-729
18-622 Str. 1 1 3 18-701 18-726
7RW 3MT
18-623 Str. 11/ 4 11/ 4 31/ 2 18-768 18-727
18-624 Str. 11/ 4 11/ 2 4 18-702 18-730 18-661 90o 18-782
18-662 30o 11/ 4 11/ 4 31/ 2 18-783 18-704 18-727
18-651 90o 18-780
18-665 90o 18-782
18-652 30o 1 /41
1 /41
3 /21
18-781 18-727
18-666 30o 11/ 2 11/ 4 4 18-783 18-705 18-728
18-657 90o 18-780 18-704 18-663 90o 18-782
18-658 30o 11/ 4 11/ 2 4 18-781 18-730 18-664 30o 11/ 2 11/ 2 4 18-783 18-705 18-729

BARREL BARREL WATER CONNECT.

SUB. ASSY. PART NO. SUB ASSY.
18-701 18-37210-8
18-702 18-37310-8 18-74000-8
18-704 18-37510-8
18-705 18-37610-8

34 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
600 SERIES UNIVERSAL HOLDER COMPONENTS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

SUB-ASSEMBLIES AND PARTS

18-74001 18-74002 *Note: Water Connection Head
18-10050 Water Conn. Tube Retainer Sub-Assembly includes All 18-10045-8
Water Nipple Hd. Parts Shown except Barrel Stationary Tube
Fits 3/8 Hose
18-10061-14 Barrel* 18-10047-8
Sealing Ring 18-20052
Threaded Adapter Sliding Tube L

BB

1 1/8 15/8 8

UNIVERSAL BB Water
BARREL L Barrel Conn.*
(HOLDER) Thread Barrel Part Sub-Assembly
SUB-ASSEMBLY NO. Size Dia. No.* Part No.
M N 18-701 1 18-37210-8
7
18-702 /8 -14 1 1 /4 18-37310-8 18-74000-8
K 18-704 1 1 /4 18-37510-8
18-705 1-14 1 1 /2 18-37610-8 18-74000-8
BB “T” CONNECTORS FOR HOLDERS
P “T” BB BS C P K M N
CONNECTOR Ø Hole
ASSEMBLY Hole Shank Shank Head Over Length Width
NO. Dia. Dia. Length Height Top
18-725 1 /
7 8 3 1 3 /4 /
3 4 25 /16 1 1 /2 2
18-726 1 1 3 1 3 /4 3
/4 25 /16 1 1 /2 BOLT
18-727 1 1 /4 1 1 /4 3 1 /2 2 15
/16 2 5 /8 1 3 /4
C 18-728 1 1 /2 1 1 /4 4 25 /16 1 1 /8 2 7 /8 2 4
BS
18-729 1 1 /2 1 1 /2 4 25 /16 1 1 /8 2 7 /8 2 BOLT
18-730 1 1 /4 1 1 /2 4 25 /16 1 1 /8 2 7 /8 2
Note: See Page 42 for 30o and small 90o “T” connections.

MALE THREAD TO FEMALE TAPER ADAPTERS

90 o TYPE ADAPT WITH INSERT 30 o TYPE STRAIGHT TYPE
Sliding Tube

{
6 Insert
6 Stationary 18-7875 G D
G

{
Tube
Sliding G 5RW 2MT
M G 1
18-40041-3
A 7RW 3MT Tube A
18-7876
6 RW
M H 30o L
18-50042-2
H All Others H D A 6
M L J
M Sliding
5 J A
L Tube F
LD D
J
J
F 11 /4
F
F *Stationary
Tube
5 Sealing Ring
Seal- 5 18-40041-3
ing 3 7RW 3MT
1
1
/4 /4 Ring Plug 18-50042-2
2
5RW 2MT
Sealing 5 Seal KO Plug 18-50042-1
3 2 1/4
Sealing 5 3 Ring 4RW 1MT
2 KO Plug Plug KO Plug
Ring Plug Seal Seal
MALE THREAD FEMALE TAPER F G H J 2 3 5 6
ASSEMBLY Adapter L M D A Overall Head End B’bl. C.L. Barrel K.O. K.O. Sealing Sliding
PART Angle Size Length Size Major Head Length to C.L. to C.L. Plug Plug Seal Ring Tube
NO. Thd. Dia. Height of Taper of Taper Part No. Part. No. Part No. Part No.

18-764 90o 4RW 19/32 13/16

18-765 30o 7 /8-14 9 /16 1MT .463 19 /16 1 Dia. 11 /16 15/32 18-50021 18-10060-8 18-76460 18-50041-1
18-766 90o 113/16 1 Dia. 19/32 11 /16 18-50022 18-40043-3
18-767 30o 7 /8-14 9/16 5RW .625 113/16 11 /16 Dia. 111/32 53/64 18-50022 18-10060-10 18-76460 18-40043-3
18-768 Str. 2MT 11 /4 3 /4 — 3 /4 — — —
18-780 90o 113/16 11 /4 Dia. 21/32 11 /16 18-50022 18-40043-3
18-781 30o 1-14 3 /4 5RW .625 113/16 15 /16 Dia. 13 /8 13/16 18-50022 18-10060-10 18-10060-17 18-40043-3
18-784 Str. 2MT 11 /4 3 /4 — 3 /4 — — —
18-782 90o 7RW 11 /2 Dia. 25/32 13 /16 18-40043-4
18-783 30o 1-14 3
/4 3MT .875 23 /16 19 /16 Dia. 13 /8 13/16 18-50023 18-10060-12 18-10060-17 18-40043-4

*18-7805 90o 5RW 11 /4 Dia. 21/32 11 /16 18-40043-3

*18-7815 30o 1-14 3 /4 2MT .625 113/16 15 /16 Dia. 13 /8 13/16 18-50022 18-10060-10 18-10060-17 18-40043-3

*18-7806 90o 11 /4 Dia. 21/32 13 /16 18-40043-3

*18-7816 30o 1-14 3 /4 6RW .750 115/16 15 /16 Dia. 17 /16 59/64 18-50022 18-10060-10 18-10060-17 18-40043-3
* These adapters have threaded inserts 18-7875—5RW 2MT or 18-7876—#6 RW Taper.
ORDER BY CMW PART NUMBER ONLY 35
 CONTACTS
800 SERIES“Nu-Twist”® ADAPTERS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

MAKE JOB CHANGES QUICKLY AND EASILY—WITHOUT COSTLY LOSS OF PRODUCTION

CMW “Nu-Twist” ® FEATURES
1. The hex locking nut may be tightened or loosened effectively by 4. Through use of baffles in adapters and in electrodes over 1"
hand or wrench for easy replacement of electrodes. long efficient cooling is effectively achieved.
2. “O” ring seals provide water tight connections. 5. All components are of corrosion-resistant alloys.
3. Double groove construction in bore or locking nut accurately 6. Maintenance costs are unusually low.
aligns and locks the electrode in position with a maximum of a
turn and one half.

NUMBER 1 SIZE NUMBER 2 and 4 SIZES

U
W * Adapter Nut

U
W * Adapter Nut
Adapter
Base * M
Water
Nipple
18-10050
SURFACE Fit Std.
3 /8 Hose
* N * Water
Adapter
MOUNTED Base Electrode Nipple
N * Electrode Seal D Seal 18-10050
ADAPTERS Fit Std.
3
/8 Hose
J R
J
D

P P

7/8
9/16
Align
Arrows Align Arrows

Y (2 Req’d.) Y (2 Req’d.)

7 /16
T S P R N
THREADED S P R N
T
ADAPTERS
May be used with 100-200 M
DJ M D
and 300 Series Holders
to make “Nu-Twist” ®
Holder.
*Electrode
Adapter * * Seal * Adapter Seal *Adapter
Base Nut Adapter Base* *Seal Nut *Electrode Seal
ADAPTER BASES ARE CMW® 3 MATERIAL
ADAPTER ASSEMBLY ADAPTER SIZE 1 2 3 5
NUMBER
Surface D J M N P R S T U W X Y Adapter Adapter Electrode Seal
SIZE Mounted Threaded Thread Base Nut Seal
1 18-801 — 11/4 — — 11/2 15/32 21
/32 No. 10-24 Scr. 18-80110 —
1 — 18-811 1
/2 5
/8 1 7
/8 15
/16 1
/4 9
/16 5/8 -18 — — — — 18-81110 18-80150 18-10060-5 18-10060-11
2 18-802 — 113 /16 — — 21/2 2 — No. 1/ 4-20 Scr. 18-80210 18-10060-1 —
2 — 18-812 15
/16 11/8 11/2 11/2 15/16 7
3
/4 1-14 — — — — 18-81210 18-80250 18-10061-10 18-10060-17
/16
4 18-804 — 113 /16 — — 3 23/8 — No. 1/ 4-20 Scr. 18-80410 —
18-10061-14
4 — 18-814 7
1 /16 1 /8 5
2 2 15/16 3
/4 11/2 -12 — — — — 18-81410 18-80450 18-10060-25

“Nu-Twist”® • Holders are available by combining Adapter 18-811 or 18-812 with holders shown on pages 29, 30 and 31
Non-Stock Holder Designs are available for use with 18-814.

MOUNTING
F
INFORMATION A E
THREADED
F /
1 16 1 /16 A
FOR THREADED ADAPTER B
ASSEMBLY A Dia. +.000 C E F T
ADAPTERS C E
SIZE NO. ±.003 -.003 Min. ±1/ 16 Dia.
C B 1 18-811 .750 .083 5
/8 3
/8 .244 5
/8-18
B 13 15
2 18-812 1.126 .113 /16 /16 .244 1-14
13 15
T T 4 18-814 1.626 .173 /16 /16 .375 11/2-12
NUMBER 1 SIZE NUMBER 2 AND 4 SIZE Adapters of other sizes are available on request.

36 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
SOCKET (OR BUTTON) AND “Nu-Twist”® ELECTRODES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

Socket Type CMW® 28, CMW ® 3 and CMW® 100 Welding Electrodes
(Use with 900 and 950 Series Holders Page 42)

CMW® 28 18-970 CMW® 28 18-971 CMW® 28 18-972 CMW® 28 18-973 CMW® 28 18-974
CMW® 3 18-980 CMW® 3 18-981 CMW® 3 18-982 CMW® 3 18-983 CMW® 3 18-984
CMW® 100 18-990 CMW® 100 18-991 CMW® 100 18-992 CMW® 100 18-993 ®
CMW 100 18-994
FLAT FACE TRUNCATED FACE RADIUS FACE OFFSET FACE 30o OFFSET FACE

“Nu-Twist”®, CMW® 3 and CMW® 100 Welding Electrodes

(Use with 800 Series Adapters Page 36, 38, 39)
No tapers or threads
Can be extracted with a simple turn of hexagon locking nut
Any contour in electrode face can be located or relocated in a given position
Water circulated to end of electrode for maximum cooling
Silver plated contact surfaces on electrode and base for maximum conductivity
Provides a simple, low-cost electrode for most special applications
Electrodes shown can be modified with contours to provide faces required
for most resistance welding applications

FLAT FACE

“Nu-Twist”® ELECTRODES
H A C E F G J K
ELECTRODE PART NO. Electrode
Body Welding Overall Adapter Water Water Electrode Ext.
Size Type CMW® 3 CMW ® 100 Dia. Face Length Clearance Hole Hole Seat From
Dia. Dia. Depth Dia. Adapt.
1 1 3 1 3 1
0 338750 538750 /2 /2 /4 — /4 /8 .625 /2
1 1
/2 1
/2 11 /2 — 1
/4 11 /8 .625 11 /4
Flat 338030 538030
1 1 3 1 3 1
0 378750 578750 /2 /4 /4 — /4 /8 .625 /2
1 1
/2 1
/4 11 /2 — 1
/4 11 /8 .625 11 /4
Trunc. 378030 578030
5 5 3 5 1 3 1
338751 538751 /8 /8 /4 /16 /4 /8 .625 /2
1 5 5
Flat 338031 538031 /8 /8 11 /2 5
/16 1
/4 11 /8 .625 11 /4
338012 538012 11 /4 11 /4 1 5
/8 1
/2 1
/2 1.125 1
/2
2
Flat 338052 538052 11 /4 11 /4 2 5
/8 1
/2 11 /2 1.125 11 /2
*This baffle is used in
electrodes over 1" long 338014 538014 13 /4 13 /4 1 5
/8 3
/4 1
/2 1.625 1
/2
4 13 /4 13 /4 2 5
/8 3
/4 11 /2 1.625 11 /2
to assure water circulation Flat 338054 538054

0 FLAT AND
0 TRUNCATED
TYPES

Where the above electrodes will not meet your special welding applications, consult your CMW distributor or
factory for the assistance of CMW engineers in designing special electrodes for your application. The design may
require special face contours, lengths or insulated locating pins. The specials feature the same advantages offered
in all “Nu-Twist” ® electrodes. To expedite this service where possible, specify electrode size, type, material, “H”
diameter, “A” diameter (or face contour), “C” length, and “G” water hole depth. If job is very special, prints or
samples of parts to be welded would be desirable.
ORDER BY CMW PART NUMBER ONLY 37
 CONTACTS
HYDRAULIC EQUALIZING ADAPTERS AND ASSEMBLIES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

CMW-Hydraulic Equalizing Adapter units are used to equalize the weld force when two or more welds are required simultaneously. The equalizing action is developed in
a closed hydraulic system—and is accomplished by hydraulically interconnecting two or more units.
See Page 27
1
for__________ /2 Pipe
18-801 18-7465-07 Thread
1 21
/32 Adapter Assy. 5RW Male
(See Page 36) Cap_
18-746-07
4RW 1MT____
1
/8 15 /32 18-747-07
18-826 11 /2
1
/4 No. 10-24 Soc. Complete 11 /4 5RW 2MT
Hd. Cap Screws #1 Size
1
/4 Working “NU-TWIST”®
Hydraulic Align Arrows
Stroke
Assembly See below 18-82650 Adapter Assy 1 /2-14 Pipe Thd. To Fit
For Cap. Electrode, 18-82167-22
Hydraulic Unit With Water Tubes and Nipples
4RW, 5RW #10-24 x 7/8 Lg. Soc.
Align Arrows
Assemblies Hd. Cap Screw
1
18-82616
/8 1
/4 Shunt Bar
3 13/64
Mean
Max. Rec. Force
Height
1000 lbs. Current
1
/8 12,000 Amps. (at 18-8262
10% Duty Cycle) Shunt 18-82165 Flexible Shunt
Sub-Assembly
2 #10-24 Holes
18-82617-1 Washer
1
Laid out same as
/4 Working
3 Base for 18-801
/8 -16 Hex Head Screws Range
(P. 34)
18-8261 1
/8 18-82171-1
1
/4 -20 Soc. Hd. 5 Approx. Hydraulic 3
/8 -16 x 5 /8 Lg.
Cap Screws 1 13/16 Unit Hex. Screw
Assembly 1
/8
143 /64 18-82612 18-82613 Retaining Screw
1 5
/8 Piston
Mean 18-82614-1 Seal
Height 18-82611 18-82167-13
Base
Over 1
/4-20 x 1 Lg.
1
/4 I.D. 7
1 /16 Insulation Soc. Hd. Cap Screw
“O” Ring Seal 23
/32 1 1/2 18-10085 Washer
18-82622 18-82163-2 Insulator
18-82651 Compl. #1 Size Hydr. Assy. for 5RW Male Cap Insulator
18-82652 Compl. #1 Size Hydr. Assy. 4RW 1MT 18-82162-2
18-10060-6 Insulator Sleeve
18-82653 Compl. #1 Size Hydr. Assy. 5RW 2MT “O” Ring Seal

We recommend using a Fire Resistant Hydraulic Fluid compatible with BUNA “N” such as HOUGHTO-SAFE #620, 1120 or equivalent.

11 /2 Std. 18-802
Adapter Assy
(See Page 36)

2 113/16
1
/4 Working
Stroke 18-827 Align Arrows
Complete
#2 Size
1
/8 “NU-TWIST”®
Hydraulic 18-82167-18
Assembly 1
/4 -20 x 1" Lg. Soc. 18-82716
Hd. Cap Screw Shunt Bar
18-82265
Align Arrows Flexible
Shunt
3 53/64 1
Mean /4
Height

1
Shunt
/8 Max. Rec. Force Sub-Assembly
2000 lbs. Current 18-8272 18-82617-1
16,000 Amps. (at
10% Duty Cycle) Washer
1
/4 18-82171-01
Working 3
1 /8 -16 x 5/8 Lg.
Stroke /8
Hex Screw
18-82712 Piston
55 /8 Approx. 49
18-82613
1 /64 1
/8 Retaining Screw
Over
18-82614-3 Seal
Insulation
Mean
1 Height 18-82167-13
1
/4-20 x 1 Lg.
11 /2 Soc. Hd. Cap Screw
1
/64
3
/ 8 -16 Hex Screw 18-10085 Washer
2 Hydraulic Unit
1
/ 4 -20 Cap Screw Assembly 18-10060-6 18-82722 18-82163-2 Insulator
21 /2 18-8271 “O” Ring Seal Insulator 18-82162-2
18-10060-6 “O” Ring 17 /8 Insulator Sleeve
18-82711
Base
38 ORDER BY CMW PART NUMBER ONLY
 CONTACTS
ASSEMBLIES OF HYDRAULIC “Nu-Twist”® NUMBERS 18-846, 18-847, AND 18-836 METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

CONTACT FACTORY
ALL ITEMS ON
B THIS PAGE
4 3 /4
3 PRICED and MADE
TO
SPECIAL ORDER
#1 Size = 3"
#2 Size = 31 /2 " “T” Mounting
Specify “B” Dim.
18-83603

18-83601 Bleeder
Valve
#1 Size = 3 13/ 64" 18-826 #1 Size
#2 Size = 3 61/ 64" 18-827 #2 Size
MEAN #1 Size
HEIGHT Pt. No. 18-846 (without
“T” Connector)
Pt. No. 18-84601 (with
“T” Connector)
#2 Size
Pt. No. 18-847 (without
“T” Connector)
Pt. No. 18-84701 (with
“T” Connector)
May be used with
1
Std. Electrodes /4 Working #1 Size—A = 11 / 32 Min. to 5 Max.
1 1
on Page 37 /4 /8 Stroke #2 Size—A = 13 / 4 Min. to 6 Max. Specify Exact Dimension

MAXIMUM RECOMMENDED WELD FORCE: #1 Size 1000# per 18-826 Unit 12,000 Amps. @ 10% Duty Cycle
#2 Size 2000# per 18-827 Unit 16,000 Amps. @ 10% Duty Cycle

Part No. 18-836 (shown below) is a typical assembly using two 18-826 assemblies set up
as a complete self-contained unit for making two spot welds at one time. This unit is so
arranged as to allow the center distances to be readily adjusted from 11/32" centers
to 21/4" centers or by rearrangement of the same parts centers may be adjusted from
21/4" to 31/2" centers.This set up also include facilities for filling and bleeding the hydraulic
units. “T” Mounting 18-83614 is available to order for Assembly 18-836.

View of Base for 18-836 Shunt Side of Assembly

1 3 /4

17 /16
1
/4
¢ of Electrodes

This assembly is recom- 1 1 /4 4 Holes

1
/4 -20Tap
mended for use at up to 1000
pounds weld force per elec-
5
trode and at up to 12,000 /8 3 1 /2 5
/8
amperes secondary weld cur-
rent at 10% duty cycle.
CMW “Nu-Twist”® ADAPTERS
BUILDING BLOCKS FOR DIES
AND BACKUPS
Easy electrode changeover for minimum downtime
Uniform height of electrode easily maintained for equal backup height Use of welder horn as offset holder
Easily located for stepped or irregular shapes for minimum welder throat clearance
Provides low-cost standard building block for backup or die insert
Permit building of lower-cost water-cooled die bases or backup dies
Side removal requires minimum clearance for electrode replacement

Use with CMW standard 18-100 and

18-200 and 18-300 series holders as “Nu-
Twist” holders on standard machines.

Near-flush mounting Permit use of

water is brought through base simple plate-type die base

ORDER BY CMW PART NUMBER ONLY 39

 CONTACTS
1100 SERIES ADJUST-A-PRESSURE WATER COOLED LOW INERTIA ELECTRODE HOLDERS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

18-110001 Stem Nut

18-110003 Steel Washer
18-110002 Fibre Washer

18-10050 18-110004 Bronze Bushing

31
/ 32
Water Nipple 18-110009 Fibre Bushing 18-110003 Steel Washer
for 3/8 Hose
1 3/ 4
4 3/4 4 3/4
E
18-110007 Jam Nuts
D

B A

Springs
18-110011 Water Head 18-110005-1 1 1/4 dia. Barrel 18-110006-1 to 500#
18-1100010
19-110005-2 1 /2 dia. Barrel 18-110006-2 to 1000#
1
Core Stem
1411/16

Adapters
18-7591
___4RW
18-7592
5RW
Cable length is 13" Over Lugs (600,000 Circular Mill)
18-110008 Cable 18-1100013 Stationary Tube
18-10047-8 Sliding Tube

A B D E
Like other low-inertia holders the heavy duty Adjust-A-Pres- HOLDER Standard
sure Holders are used for multiple spot and projection welding, ASSEMBLY Major Electrode PRESSURE
PART Taper Barrel Taper Range
and are excellent for indirect welding when mounted in the NUMBER Dia. Dia. Taper Engage- (Pounds)
ment
Adjust-A-Angle Adapter.
1
18-1101 .463 4RW 1MT /2
Electrical current is conducted through heavy flexible cables 11 /4 3
18-1102 .625 5RW 2MT /4 TO
and the holder is insulated to prevent any damaging effects to 1
18-1103 .463 4RW 1MT /2 500
the spring mechanism. Light duty springs supplied to order. 11 /2 3
18-1104 .625 5RW 2MT /4

STANDARD ASSEMBLY USES

18-110006-1 SPRING
1150 SERIES ADJUST-A-ANGLE ADAPTERS
BS

ADAPTER
ASSEMBLY BS
PART Shank
NUMBER Dia.

18-1154 1
18-1155 11 /4
5
18-1156 11 /2
1
/2
Min.

5 Max.

1100 SERIES HOLDERS ASSEMBLED

2 IN 1150 SERIES ADAPTER
1150 series adjust-a-angle adapt-
ers are adaptable for use with
spring type low inertia holders
1100 series as well as straight
holders 100, 200, and 300 series.
40
4 1 /2 o
8 1 /2 ❤

ADAPTERS FOR
BARREL SIZES
1
/8 OTHER THAN
1
215 /16 /4 1 1 /4 11¦4 DIA. MADE
ONLY TO
SPECIAL
ORDER

40 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
APPLICATION SHEET FOR TYPICAL MULTIPLE SPOT WELDING SET UPS METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

Typical Set Up For Typical Set Up for

3 Spots at a time in Parallel 2 spots simultaneously
in parallel

Standard 11/ 4 DIA.

Shank

1 CMW Std. 1150 Series Adapter

2 CMW Std. 1100 Series Holders
1 CMW Special 1100 Series Holder

4RW-16-582011-01
5RW-16-582012-01

11/ 4 " Dia. Shank Standard

Upper
2-1100 Series Holders
1-1150 Series Adapter
SET UP
FOR Lower
PARALLEL 2-100, 200 or 300 Series Holders
WELD 1-1150 Series Adapter with special
center shank

SET UP
FOR
SERIES
WELD

TYPICAL SET UP OF 800 SERIES “Nu-Twist” ® UNITS

CONTACT FACTORY For dual spot welding using hydraulic “Nu-Twist”® pressure equalizing
ALL ABOVE ITEMS subassemblies and surface mounted adapters as basic building blocks
PRICED and MADE
TO SPECIAL ORDER

ILLUSTRATIONS
ONLY Upper
two
18-826
hydraulic
unit assemblies
INSULATED mounted on
fixed
centers SET UP
(See Pages FOR
38 and 39) PARALLEL
WELD
Lower
Two
18-801
surface
mounted
“Nu-Twist” ®
Adapters
SET UP (See Page 36)
FOR
SERIES
WELD

ORDER BY CMW PART NUMBER ONLY 41

 CONTACTS
900 SERIES LIGHT DUTY WATER COOLED UNIVERSAL HOLDER METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

**Note: Sold as a sub-assembly. 5 3/ 4 Barrel Length

Water nipple—tube assembly 9
/ 32
18-90041-1 CL to CL Adjustable 9 *Barrel may be
/ 16*
Water nipple 18-10050 11/8 Min. 4 Max. 11
machined to these
/32 Drill
#10-32 cap screw 18-82167-2 dimensions for
90o 1 /8 pipe ell 18-71150-1 more clearance
}
13
/16
1
May be 5 /16*
/8
purchased
18-71150-1
separately Barrel
90o 1/ 8 Pipe Ell
18-10050 Water 3
/4 Dia. Sub-Assembly 30 o
Nipple for 3/8 Hose 18-82167-2
1 1/2 Dia. "T" Connector 11
/32
Sub-Assembly #10-32 Cap Screw
3/
32
B Dia.

15
/16

18-90041-1 Water Nipple

Tube Assembly for 3/8 Hose
5 7/8 Barrel Length
HOLDER ASSEMBLY
PART Holder B Barrel “T”
NUMBER Angle Shank Dia. Sub-Assembly** Connection* Barrel*
18-901 90 o 18-709 18-70910-1
18-902 30 o 3
/4 18-710 18-720 18-71010-1 Holders of Other
Shank Diameters
18-903 90 o 18-709 18-70910-1 and Lengths or
18-904 30 o 7
/8 18-710 18-721 18-71010-1 Design Modifications
Are Available on
18-905 90 o 18-709 18-70910-1 Request as Specials.
18-906 30 o 1 18-710 18-722 18-71010-1
18-907 90 o 18-709 18-70910-1
18-908 30 o 1 1/ 4 18-710 18-723 18-71010-1

950 SERIES WATER COOLED PADDLE HOLDER

{ 18-953
18-952 } *Barrel may be machined
to this dimension for
Electrodes
Not Included
more clearance See Page 37
30 o
9
/ 16*
23
17 /32
/32
18-954
18-955
18-71150-1 BB Socket Type Electrodes
90 o 1/8 Pipe Ell may be used on either
R 11/2 129/32 top or bottom surface
M J
9
/32

18-713
18-714
18-715
18-10050
Water Nipple
for 1/8 Hose
H

C 18-734
18-733 "T" Connection
Sub-assemblies View showing barrel
18-732 Sub-assembly and
18-731
electrode reversed in shank
BS
The Paddle Holder’s heavy duty construction enables it to be used at high pressures in hard to reach spots. A minimum
clearance is required. The barrel is adjustable in the “T” connection by both rotation and amount of offset.
HOLDER HOLDER SIZE
ASSEMBLY BB BS C H J M
PART Barrel Shank Shank Offset Height “T” Barrel “T”
NUMBER Dia. Dia. Length Range Range Width Sub-Assembly** Connector
7
18-952 1 /8 3 33 / 8 to 21 / 16 to 11 / 2 18-731
18-953 1 5 3/ 32 3 1/ 16 18-713 18-732
18-954 1 1/ 4 1 1/ 4 3 1/ 2 4-523/ 32 23/ 4-33 / 4 1 3/ 4 18-714 18-733
18-955 1 1/ 2 11 / 2 4 47/ 32-5 15/ 16 27/ 8-37 / 8 2 18-715 18-734
}
}

Holders of other Shank Dia. and Lengths or **Note: Sold as a sub-assembly These 30o “T” connector
Design Water
o
nipples 18-10050 may
o
be interchanged with the
Modifications are available on request as Specials. 90 1 /8 pipe ells 18-71150-1 90 Universal Type “T” Conn.
# 10-32 cap screw 18-82167-2 page 35. See page 28 for sug-
May be purchased separately. gested set ups.

42 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
PLATEN MOUNTED ELECTRODE HOLDERS METALS
WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

CMW platen mounted electrode holders provide an economical means of mounting a wide range
of electrodes in all the popular sizes to your press type welder platens. They are machined
R.W.M.A. class 2 material to provide years of reliable service.

Part No. 18-0510-12 Part No. 18-0520-12

7
4 1 /4
1 5 /8
1

CMW 18-0510-12 CMW 18-0520-12

1
/2 1 1 /2
2

3 4 /

123/ 64Ø 149 /64 Ø

1-14 UNF 1-14 UNF

2 1 /8 3
/4 2 3 /8

1
/2

Silver Plated Mounting Surface Silver Plated Mounting Surface

for Maximum Conductivity for Maximum Conductivity
CMW platen mounted electrode holders are machined from
CMW® 3 (RWMA class 2) chrome copper castings. They are When ordering either CMW PM holder
designed to mount to press type welder platens from size #1 with also specify the adapter(s) and sliding
the small holder to sizes #2 and #3 with the large holder. Both tube(s) required for your application.
holders are provided with a 1-14 internal thread which will accept
the standard male thread to female taper adapters, #4RW, #5RW,
#6RW, and #7RW, as shown on page 27 of this catalog, and the #2
size “Nu-Twist”® threaded adapter as shown on page 36 of this
catalog. Both holders are provided with inlet and outlet water 1-14 male thd to
nipples for standard 3/8" water lines and a stationary water tube. female taper adpt. as
SLIDING
SLIDING
Adapters and sliding water tubes must be ordered separately, by shown on page 27 of ATTACHMENT TUBE
TUBE
part number as required (see fig. #1). this catalog. O.A.L.
The CMW platen mounted holder, as indicated in figure #2, has
the inlet water nipple at position #1 and the outlet water nipple at 18-785 4RW 18-50041-3 1 3/8
position #2, any other combinations may be special ordered by
changing the last two digits of the part number. The first of the last 5RW 18-40043-11 1 3/8
two digits indicates the location of the inlet nipple and the second
18-786
digit indicates the location of the outlet nipple.
18-7863 6RW 18-40043-14 2 1/8
Example; part #18-0510-56 would place the inlet water nipple at
position #5 and the outlet water nipple at position #6.
18-787 7RW 18-40043-15 2 3/8
18-812 #2 SIZE NONE -
STATIONARY WATER TUBE ®
“Nu-Twist”
18-40041-5
FIGURE #1 FIGURE #2
Additional Sliding 4
Tubes Available O.A.L. FOR TAPER 18-7743 CMW 18-05XX-XX

3 5
18-50041-2 2 1/2 4RW
1"-14 Thd 5
/8 - 18 Thd
Adapter for ø1" & ø1 1/4" 2 6
18-40043-5 2 5RW
Chameleon/Max-Life™ projection 1
welding electrodes and 18-811, Water Outlet Water Inlet
18-40043-9 4 5RW,6RW,7RW #1 size threaded "Nu-Twist" ® adapter on angle on Face
ORDER BY CMW PART NUMBER ONLY DIMENSIONS ARE IN INCHES. 43
 CONTACTS
MULTI-SPOT WELDER ELECTRODE ADAPTERS METALS
WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

18-100007
18-82167-16 5
5
/ 16 -18
3 1/ 4 / 16-18x1Lg
Knurled Nut
Soc Hd Cap Screw
CMW Electrode adapters for 3
/4 1 7/ 8
multispot air or hydraulic pistons 18-120105 1 1 /2
3
are supplied with 3 / 4 diameter / 4 I.D. INSULATION 18-120102
5
/ 8 Dia. Clamp
straight piston rod ends. These
18-120106
adapters are equipped with means INSULATION ¦
3 4

for attaching the welding cable

from the transformer and the wa- 18-10050
18-82168-02 Nipples (2)
ter hoses to the inlet and outlet 1
/ 8 Pipe For 3/ 8 Hose
Plug 11/ 8 Dia.
water connections. 3 1/ 2
These adapters are available in 1"
four basic assemblies as shown in 18-120101

the table. Barrel

Stat. 7 8 /
Tube

Adjust.
Tube D 1
/ 2-14 Pipe Thd.
Adapter
A

A 9 10
D Major Stat. Adj. 11
ASSEMBLY Attachment Taper Tube Tube Adapter
PART NO. Dia. Part No. Part No. Part No. Part No.*
18-1201 /2 -14 NPT
1 — 18-50046-1 18-10046-23 —
5RW 2MT
18-1202 Male Cap .4145 18-50046-1 — 18-7465-07
4RW
18-1203 1MT .463 18-50046-1 18-10046-23 18-746-07
5RW
18-1204 2MT .625 18-50046-1 18-10046-23 18-747-07
*See Page 27 for detail description. All assemblies include items 1, 2, 3, 4, 5, 6, 7, 8, and 9.

WELDING MACHINE CONTROL CONTACTORS

1 3/ 4 1
15/ 16 3
/4
1
3
/2
/8
7
/ 16 1 3/ 8
3
/8 11/ 16

11
/16 5
/16
11
/ 32 Dia. 1 1 /4 7
/8 5 1 7
/8 /2 / 16 Dia.

Part No. 16-1306 7

/ 16 Part No. 16-1303
1 1/ 2 1 1
1 /4 15
/ 32
13
/ 16 1 5/ 8 7
/8
1
/2
7
3
/ 16
1
/2 1 1/ 2 /8
7
/ 16 1 1/ 4

25
/ 64 Dia.
7
/8 3
/8 11
/ 32 Dia. Part No. 16-1309 7
/8 3
/8 11
/32 Dia.
Part No. 16-1307 Part No. 16-1304

For use primarily in resistance welding controls. over. Because of the arc resistant characteristics
CMW maintains standard stocks of the five con- of the metal, only the desired number of cycles of
tacts listed. They consist of CMW ® 353 material, a current are transmitted to the welding machine.
predominately copper alloy possessing arc resist- Uniform welding quality is obtained because no
ing properties. additional current passes through the control, since
CMW ® 353 Material has the ability to interrupt the CMW ® 353 Material tends to prevent the arc from
current in a short time with minimum arc hang- restriking.
44 ORDER BY CMW PART NUMBER ONLY
 CONTACTS
ACCESSORIES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

REAMERS
High speed steel reamers to rework worn tapers in holders are available for
standard 4RW 1MT, 5RW 2MT, 6RW and 7RW 3MT, and 4RW 1MT, 5RW
2MT. and 6RW Cap tapers. All reamers except for the 4RW 1MT are hollow,
making it possible to recondition worn holder tapers without removing the water
tubes.
4RW 1MT Part No. 18-1322
5RW 2MT Part No. 18-1323
6RW Part No. 18-1321
7RW 3MT Part No. 18-1324
4RW 1MT cap taper Part No. 18-1327
5RW 2MT cap taper Part No. 18-1328
6RW cap taper Part No. 18-1329

WATER COOLING HOSE — PART NO. 18-1350

CMW water-cooling hose is the finest available. Made by a prominent hose
manufacturer. This hose is 3 /8" diameter which properly fits the water nipples on
CMW holders. It is available in 50-foot coils or can be cut to length.

HOSE CONNECTOR FOR 3/8 HOSE—PART NO. 18-1351

This hose connector, placed in the water-cooling hose line, facilitates quick
change of holders or dies. The male and female ends of these connectors should
be reversed in the inlet and outlet lines to eliminate confusion in changing set-
ups.

QUICK CONNECTIVE COUPLING ASSEMBLY

PART NO. 18-1352
The plug of this coupling can be mounted on CMW holders converting them for
SOCKET PLUG quick hose changes. An automatic water shut-off valve is built into the coupling.
( 1/ 8 Female Pipe Thd.) ( 1 /8 Male Pipe Thd.)
18-135200-1 18-135200-2

HOSE CLAMP — PART NO. 18-1353

This aircraft type hose clamp gives positive tightening action which eliminates
water leakage. It is easy to install and remove from Standard 3 / 8 " Water Hose.

CAP ELECTRODE EXTRACTOR FORK

18-1381-1 FOR 5RW CAPS
18-1381-2 FOR 4RW CAPS
These hardened steel wedge type forks will make the removal of electrode caps
quick and easy. They can be used on both female and male caps.

ORDER BY CMW PART NUMBER ONLY 45

 CONTACTS
ELECTRODE DRESSING CUTTERS AND ACCESSORIES METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

ELECTRODE DRESSING ACCESSORIES

0.482" 0.482" 0.482" 0.482" 0.482" 0.482" 0.482" 0.482"

TO DRESS Dia. Dia. Dia. Dia. Dia. Dia. Dia. Dia.

Standard
RWMA 4
(#1 MT)

NOSE STYLE DOME POINTED FLAT 2" RADIUS 3" RADIUS 4" RADIUS 10" RADIUS TRUNCATED
(CMW ELECTRODE NO.) x11x... x21x... x31x... x51x... x81x... x91x... x61x... x71x...

KIT** 18-1390411 18-1390420 18-1390410 18-1390413 18-1390414 18-1390415 18-1390416 18-1390412

TO ORDER
Replacement Blade 18-139411 18-139420 18-139410 18-139413 18-139414 18-139415 18-139416 18-139412
(for above kit)

Replacement Guide 18-139401 18-139402 18-139401 18-139401 18-139401 18-139401 18-139401 18-139401
Ring (for above kit)

**Note: Each Kit includes Stud (for 3/8" keyed chuck), Chuck, 1 Guide Ring, 1 appropriate Blade, and Retaining
Nut.
This kit is appropriate for use with either Pneumatic Power Tool (18-1310) or any rotary device with 3/8" keyed chuck.
The Pneumatic Power Tool is recommended for dressing while installed in the welder.

KIT
CUTTING BLADE CHUCK 3/8" STUD 500 RPM
RETAINING NUT GUIDE RING
Recommended ELECTRODE

TO DRESS 0.625" 0.625" 0.625" 0.625" 0.625" 0.625" 0.625" 0.625"

Dia. Dia. Dia. Dia. Dia. Dia. Dia. Dia.
Standard
RWMA 5
(#2 MT)

NOSE STYLE DOME POINTED FLAT 2" RADIUS 3" RADIUS 4" RADIUS 10" RADIUS TRUNCATED
(CMW ELECTRODE NO.) x12x... x22x... x32x... x52x... x82x... x92x... x62x... x72x...

KIT** 18-1390511 18-1390520 18-1390510 18-1390513 18-1390514 18-1390515 18-1390516 18-1390512

TO ORDER
Replacement Blade 18-139511 18-139520 18-139510 18-139513 18-139514 18-139515 18-139516 18-139512
(for above kit)

Replacement Guide 18-139501

Ring (for above kit) 18-139502 18-139501 18-139501 18-139501 18-139501 18-139501 18-139501

Note: Cutters arenot designed to conform to "Electrode Cap" geometries. Caps are intended for metal value salvage when expended.

46 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
ELECTRODE DRESSERS METALS
WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.
PNEUMATIC POWER HANDLE 10 1/2
FOR ELECTRODE DRESSING 2 1/2
PART NO. 18-1310
Light weight and rugged construction, this CMW 1 3/4 1 1/ 2
Pneumatic Power Handle requires a clearance of only
1 1/2" with a standard ring and 2" with an extended
ring. In most situations this allows dressing of elec-
trodes without removal from the welder. Operating at PNEUMATIC POWER HANDLE 1 1/2
PT # 18-1310
a cutting speed of 1200 RPM, it enables the operator 1"
to dress electrodes quickly and accurately. Cutters
Cutter Kit not included.
and guide rings are easily replaced. These must be
Order Cutter Kit seperately
matched to the electrode nose and are selected from (see page 46)
the chart on page 46.
CMW Electrode Dresser 18-1310 is supplied without
blade holder, ring and cutter blade. When ordering,
specify the "Kit" appropriate for your dressing needs
as selected from the table on page 46.
(The "stud" furninshed with the "Kit" is not required when using the
Pneumatic Power Handle. It may optionally be used, but will
increase the clearance required on the welder for dressing).

Additional special cutters can be furnished upon

request.

Electrode Dresser — Part No. 18-1307

The Electrode Dresser quickly removes the “mushroomed” portions of
spot welding electrodes and renews 4RW or 5RW Taper, dome or
pointed electrodes with the proper operating contour. The Electrode
Dresser re-machinesboth upper and lower electrodes to the correct
profile “on the job”—provided both electrodes are identical—without Order replaceable cutters by—18-130701
removal of the electrodes from their holders. Dresser is 10" long, with Order replaceable handle by—18-130702
a replaceable cutter of hardened tool steel.

ELECTRODE DRESSER
PART NO. 18-1370

Precision Ground Contour Plates

2" Sphr. Rad. - 18-137001
3" Sphr. Rad. - 18-137002
4" Sphr. Rad. - 18-137003
6" Sphr. Rad. - 18-137004
8" Sphr. Rad. - 18-137005
10" Sphr. Rad. - 18-137006 Replaceable 2" Roll Abrasive Cloth
18-137009
Electrodes Dressed to Any Radius Without Removal from Welder
In certified resistance welding and where clean, The Maintain-A-Contour Dresser is supplied
strong welds are necessary on a production ba- with a spool of 240 grit cloth, and one set of (2 per
sis the Maintain-A-Contour Dresser pays big divi- set) precision ground contour plates. Specify the
dends. Its use not only assures consistent quality size radius (2"—3"—4"— 6"— 8"—10") plates
welds in aircraft metals, but saves valuable pro- required.
duction time in all dressing operations. Plates with special radii are available on spe-
cial request. The abrasive cloth is standard 2"
width.

ORDER BY CMW PART NUMBER ONLY 47

 CONTACTS
WELDING BAR AND ROD STOCK METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

DIAMETER RWMA CMW WEIGHT/LBS.

THK. WTH. ALLOY CMW ® PART
(INCHES) CLASS NO. ALLOY NO. NUMBER INCH FOOT
Rounds
1/8 2 CMW®3 58704 .012 .147
1/4 2 CMW®3 58707 .016 .192
3/8 2 CMW®3 58712 .035 .420
7/16 2 CMW®3 58713 .048 .576
.482 2 CMW®3 50333 .058 .696
.482 1 CMW®28 65256 .058 .696
1/2 2 CMW®3 58715 .063 .756
.500 2 CMW®3 58715 .063 .756
.500 1 CMW®28 64124 .063 .756
.625 1 CMW®28 64126 .099 1.188
1/2 3 CMW®100 75836 .063 .756
5/8 2 CMW®3 58716 .099 1.188
5/8 3 CMW®100 75835 .099 1.188
3/4 2 CMW®3 58708 .142 1.704
3/4 1 CMW®28 66526 .142 1.704
7/8 2 CMW®3 58719 .193 2.316
7/8 3 CMW®100 75736 .193 2.316
1.0 2 CMW®3 58710 .251 3.012
1-1/4 2 CMW®3 58720 .395 4.740
1-1/4 3 CMW®100 59035 .395 4.740
1.260 2 CMW®3 59840 .396 4.752
1-1/2 2 CMW®3 58724 .568 6.816
1.510 2 CMW®3 52217 .570 6.840
2.0 2 CMW®3 58731 1.010 12.120
2.0 3 CMW®100 75838 1.010 12.120
2-1/2 2 CMW®3 58767 1.580 18.960
3-1/8 2 CMW®3 51235 2.470 29.640
Hex
.250 Hex 2 CMW®3 79072 .013 .156
.375 Hex 3 CMW®100 79993 .029 .348
.438 Hex 2 CMW®3 79556 .040 .480
.438 Hex 3 CMW®100 79544 .040 .480
.500 Hex 2 CMW®3 76569 .052 .624
.500 Hex 3 CMW®100 75450 .052 .624
.625 Hex 2 CMW®3 68487 .081 .972
.750 Hex 2 CMW®3 58755 .117 1.404
.750 Hex 3 CMW®100 78781 .117 1.404
.875 Hex 2 CMW®3 58756 .160 1.920
1.000 Hex 2 CMW®3 58655 .208 2.496
1.000 Hex 3 CMW®100 55848 .208 2.496
1.125 Hex 2 CMW®3 52956 .264 3.168
1.125 Hex 3 CMW®100 79933 .264 3.168
1.250 Hex 2 CMW®3 73784 .326 3.912
1.250 Hex 3 CMW®100 67490 .326 3.912
1.500 Hex 3 CMW®100 50561 .469 5.628
Squares and Rectangles
1/4 x 1-1/2 2 CMW®3 58881 .120 1.440
1/2 x 1/2 2 CMW®3 58766 .080 .960
5/8 x 5/8 2 CMW®3 58677 .125 1.500
1x1 2 CMW®3 58690 .320 3.840
1 x 1-1/2 2 CMW®3 50322 .480 5.760
1x2 2 CMW®3 58759 .640 7.680
1x3 2 CMW®3 50324 .960 11.520
1-1/2 x 3 2 CMW®3 74630 1.440 17.280
3 CMW®353
4 CMW®73 VARIOUS SHAPES AND SIZES
5 ELKALOY ®D AVAILABLE IN THESE
10 ELKONITE®1W3 MATERIALS.
11 ELKONITE®10W3 CONSULT CMW INC.
12 ELKONITE®30W3 CUSTOMER SERVICE FOR
13 ELKON® 100W PRICE AND DELIVERY INFORMATION.
14 ELKON ®100M

48 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
ELKONITE® BAR STOCK METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

TYPICAL PROPERTIES OF ELKONITE ® MATERIALS

(See CMW Inc. Catalog Series 200)
Density Electrical Theoretical Modulus of Rupture
Elkonite® Composition g/cm or Conductivity Resistivity Thermal Conductivity Hardness In Bending ASTM
Material % by Weight (Mg/m3 ) Ib/In 3 %IACS (n-ohm-m) Btu-h1-ft1-F 1 (W-m 1-K 1) (Rockwell) pal (MPa) Specification

1W3 55W:45Cu 12.50 .452 53 (32.5) 180 (310) 77HRB 110.000 (758) B702
3W3 68W:32Cu 13.93 .503 50 (34.5) 160 (280) 90HRB 130.000 (896) B702
5W3 70W:30Cu 14.18 .512 48 (35.9) 160 (280) 95 HRB 140.000 (965) B702
10W3 75W:25Cu 14.84 .536 45 (38.3) 150 (260) 98 HRB 150.000 (1030) B702
10W53 75W:25Cu* 14.79 .534 28 (61.6) 85 (150) 109 HRB 200.000 (1380) B702
30W3 80W:20Cu 15.56 .562 41 (42.1) 145 (250) 103 HRB 170.000 (1170) B702
TC5 50WC:50Cu 11.26 .408 45 (38.3) 170 (290) 94 HRB 160.000 (1100) _
TC10 56WC:44Cu 11.64 .421 42 (41.0) 160 (280) 100 HRB 180.000 (1240) _
TC20 70WC:30Cu 12.65 .457 30 (57.5) 140 (240) 37 HRC 200.000 (1380) _

*Cu Alloy 10W53 FULLY HEAT TREATED

ELKONITE ® 10W3 ROUND BARS–8 INCH LENGTH

FINISHED DIAMETER PART NUMBER FINISHED DIAMETER PART NUMBER

1/8 15-140200-64 3/4 15-141200-64

3/16 15-140300-64 7/8 15-141400-64
1/4 15-140400-64 1 15-141600-64
5/16 15-140500-64 1-1/8 15-141800-64
3/8 15-140600-64 1-1/4 15-142000-64
7/16 15-140700-64 1-3/8 15-142200-64
1/2 15-140800-64 1-1/2 15-142400-64
9/16 15-140900-64 1-3/4 15-142800-64
5/8 15-141000-64 2 15-143200-64

ELKONITE ® 10W3 RECTANGULAR BARS–8 INCH LENGTH

SIZE-INCHES SIZE-INCHES SIZE-INCHES
THICK WIDTH PART NUMBER THICK WIDTH PART NUMBER THICK WIDTH PART NUMBER
1/8 15-140202-64 5/16 15-140505-64 1-1/2 15-142408-64
1/4 15-140402-64 3/8 15-140605-64 1/2 2 15-143208-64
5/16 15-140502-64 1/2 15-140805-64 4 15-146408-64
3/8 15-140602-64 5/8 15-141005-64 5/8 15-141010-64
1/2 15-140802-64 5/16 3/4 15-141205-64 3/4 15-141210-64
1/8 5/8 15-141002-64 1 15-141605-64 1 15-141610-64
3/4 15-141202-64 1-1/4 15-142005-64 5/8 1-1/4 15-142010-64
1 15-141602-64 1-1/2 15-142405-64 1-1/2 15-142410-64
1-1/4 15-142002-64 2 15-143205-64 2 15-143210-64
1-1/2 15-142402-64 4 15-146405-64 4 15-146410-64
2 15-143202-64 3/8 15-140606-64 3/4 15-141212-64
4 15-146402-64 1/2 15-140806-64 1 15-141612-64
3/16 3/4 15-141203-64 5/8 15-141006-64 1-1/4 15-142012-64
1/4 15-140404-64 3/4 15-141206-64 3/4 1-1/2 15-142412-64
5/16 15-140504-64 3/8 7/8 15-141406-64 2 15-143212-64
3/8 15-140604-64 1 15-141606-64 4 15-146412-64
1/2 15-140804-64 1-1/4 15-142006-64 1 15-141616-64
1-1/2 15-142406-64 1-1/4 15-142016-64
1/4 5/8 15-141004-64
2 15-143206-64 1 1-1/2 15-142416-64
3/4 15-141204-64
4 15-146406-64 2 15-143216-64
1 15-141604-64
1-1/4 15-142004-64 1/2 15-140808-64 4 15-146416-64
1-1/2 15-142404-64 1/2 5/8 15-141008-64 1-1/4 15-142020-64
2 15-143204-64 3/4 15-141208-64 1-1/4 1-1/2 15-142420-64
4 15-146404-64 1 15-141608-64 2 2 15-143232-64
1-1/4 15-142008-64

*Contact Factory For Additional Sizes

ORDER BY CMW PART NUMBER ONLY 49

 CONTACTS
FORCE GAUGES METALS
WELDING
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

The examples listed below are stock items. If you would like us to build a force
gauge to fit your needs, please refer to the table for available options. CMW also
offers a digital force sensor. Please call for quotation.

STOCK FORCE GAUGES REPAIR AND REPLACEMENT PARTS

Standard Part Number LC2564-73 FRONT AND REAR "O" RING AND CAP SCREW

1 3 RADI"US OPTIONAL
2 /2 " sensor, 5.0" grip, 2,000 lbs. of force, /4" poly LOAD CELL PAD
LOAD CELL BODY
locator

RETAINER
Deluxe Part Number LC2164-7393
2 1/2" sensor, 5.0" grip, 2,000 lbs. of force, 15 o EXTENSION
flexible swivel connection, 3/4" poly locator, insu-
lated back pad
SAFETY GRIP

AVAILABLE ON REQUEST

Digital Part Number LC8568-73

3 /2 " sensor, 5.0" grip, 5,000 lbs. of force, 3/4" poly
1

FORCE SENSOR
locator

FORCE GAUGE OPTIONS

SENSOR CONNECTOR FORCE RANGE PAD REAR PAD
2.5" w/o pointer 15o flex swivel 11.0" OAL* 300 Flat Poly Flat
2.5" w/pointer†* 90o flex swivel 15.0" OAL 600 Flat SS
4.0" w/o pointer 180o flex swivel 19.0" OAL 1,000 3
/4" Locator Poly †* 3
/4" poly*
3
4.0" w/pointer 2,000†* /4" Locator SS
4.5" process Standard 5.0" grip 3,000 5.0" Radius Poly 5.0" Radius Poly
1
4.5" w/pointer 6.0" OAL w/o grip 5,000 5.0" Radius SS
2
Under 7.0" OAL 10,000 Thin (low profile)
1
Digital Swivel only Must add SS live pad Thin Poly
2
SS live pad and flat rear pad Thin SS
† = Standard * = Deluxe

APPROXIMATE PRESSURE EXERTED BY AIR CYLINDER SIZE

DIAMETER CYLINDER AREA
SQ. INCHES
4" = 12.5 x =
5" = 19.5 x WELDER = ELECTRODE
GAUGE FORCE
6" = 28.0 x PRESSURE = PRESSURE
8" = 50.0 x =

50 ORDER BY CMW PART NUMBER ONLY

 CONTACTS
GCAP® WELD AND STEPPER SCHEDULE METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

GCAP ® ELECTRODE WELD SCHEDULE FOR GALVANIZED STEEL

Metal Thickness .020 .030 .035 .040 .050 .060 .078 .093 .125
G-CAP 244 254 254 254 255 255 266 266 266
Pressure 300 400 500 650 750 800 1000 1200 1400
Squeeze cycle 25 25 25 25 30 30 30 35 35
Up-Slope cycle 4 4 4 4 5
Upslope 2.0 2.0 2.0 2.0 2.0
Kiloamps to S.C.* to S.C.* to S.C.* to S.C.* to S.C.*
Weld cycle 6 8 9 10 7 8 10 12 10
Kiloamps 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.5 13.5
Cool cycle 1 1 1 1 1
Weld cycle 7 8 10 12 10
Kiloamps 10.5 11.0 11.5 12.5 13.5
Cool cycle 1
Weld cycle 10
Kiloamps 13.5
Hold cycle 3 4 4 5 5 10 10 15 20
* S.C. – Starting Weld Current

GCAP® LINEAR STEPPER

Total Weld Count 500 1,000 3,000 5,000 7,500 10,000 12,000

Total Amps Boost 600 1000 3000 5000 6800 8400 9200

Amps Boost Per 1.20 .88 .60

Weld

The above schedules and stepper is only meant to be a guide and will require adjustments to fit the application.

ORDER BY CMW PART NUMBER ONLY 51

 CONTACTS
APPLICATION DATA SHEET METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

SPOT WELDING DATA

OPTIMUM CONDITIONS
SCHEDULES FOR SPOT WELDING LOW CARBON STEEL—SAE 1010

Electrode Diameters and Shape* Diameter Minimum Weld Minimum

of Fused Zone Spacing Contacting
Flat Face Radius Face
(Approx.) Overlap
Thick- Weld Weld Shear Strength
ness Time (For Steels Having
of (Cycles) Ultimate Tensile
Thinnest (60 Hold Welding Strength of 90,000
Outside Recommended Weld Cycles Time Current psi and below)
Piece Maximum d Min. D Radius R Minimum StandardForce per (Cycles) (Amps.) Minimum Strength Dw S L
(Inches) (Inches) (Inches) (Inches) Electrode Size (Lbs.) Sec.) Min. (Approx.) (Lbs/Weld) (Inches) (Inches) (Inches)
1 1 3
0.010 0.125 /2 2 4RW 1MT 160 4 5 4,000 130 0.113 /4 /8
1 3 7
0.021 0.187 /2 2 4RW 1MT 244 6 8 6,500 300 0.139 /8 /16
1 1 7
0.031 0.187 /2 2 4RW 1MT 326 8 10 8,000 530 0.161 /2 /16
5 3 1
0.040 0.250 /8 3 5RW 2MT 412 10 12 8,800 812 0.181 /4 /2
5 7 9
0.050 0.250 /8 3 5RW 2MT 554 14 16 9,600 1,195 0.210 /8 /16
5 5
0.062 0.250 /8 3 5RW 2MT 670 18 20 10,600 1,717 0.231 1 /8
5
0.078 0.312 /8 3 5RW 2MT 903 25 30 11,800 2,365 0.268 1 1/ 8 11
/16
5
0.094 0.312 /8 4 7RW 3MT 1,160 34 35 13,000 3,054 0.304 1 1/ 4 3
/4
7
0.109 0.375 /8 4 7RW 3MT 1,440 45 40 14,200 3,672 0.338 15/ 16 13
/16
7
0.125 0.375 /8 4 7RW 3MT 1,760 60 45 15,600 4,300 0.375 1 1/ 2 7
/8
7
0.156 0.500 /8 6 Male or Female
Threaded 2,500 93 50 18,000 6,500 0.446 13 /4 1
0.187 0.625 1 6 Male or Female
Threaded 3,340 130 55 20,500 9,000 0.516 2 11 /2
0.250 0.750 11 /4 6 Male or Female
Threaded 5,560 230 60 26,000 18,000 0.660 4 11 /2

PERMISSIBLE SCHEDULE VARIATIONS FOR SPOT WELDING LOW CARBON STEEL

Low Carbon Steel Spot Welding Data Chart—Single Impulse Welding

DATA COMMON TO ALL CLASSES WELDING SET-UP FOR BEST WELDING SET-UP FOR MEDIUM WELDING SET-UP FOR GOOD
OF SPOT WELDS QUALITY—CLASS A WELDS QUALITY—CLASS B WELDS QUALITY—CLASS C WELDS
Electrode Diam. Diam. Diam.
Diam. & Shape of of of
Thick- Fused Fused Fused
ness Zone Average Zone Zone
of Each Min. Tensile Average Average
d
of the D Min. Con- Weld- Shear Weld- Tensile Tensile
Two Weld tacting Weld Elec- ing Dw Strength Weld Elec- ing Dw Shear Weld Elec- Weld- Dw Shear
Work Spacing Overlap Time trode Cur- ±14% Time trode Cur- Strength Time trode ing Strength
Pieces Min. D Max. d (Note 4) (Note 6) (Note 7) Force rent (Note 7) Force rent ±17% (Note 7) Force Current ±20%
Inches Inches Inches Inches Inches Cycles Pounds Amps. Inches Pounds Cycles Pounds Amps. Inches Pounds Cycles Pounds Amps. Inches Pounds
1 1 1 3
.010 /2 /8 /4 /8 4 200 4000 .13 235 5 130 3700 .12 200 15 65 3000 .11 160
1 3 3 7
.021 /2 /16 /8 /16 6 300 6100 .17 530 10 200 5100 .16 460 22 100 3800 .14 390
1 3 1 7
.031 /2 /16 /2 /16 8 400 8000 .21 980 15 275 6300 .20 850 29 135 4700 .18 790
5 1 3 1
.040 /8 /4 /4 /2 10 500 9200 .23 1305 21 360 7500 .22 1230 38 180 5600 .21 1180
5 1 7 9
.050 /8 /4 /8 /16 12 650 10300 .25 1820 24 410 8000 .23 1700 42 205 6100 .22 1600
5 1 5
.062 /8 /4 1 /8 14 800 11600 .27 2350 29 500 9000 .26 2150 48 250 6800 .25 2050
5 5
.078 /8 /16 11/8 11
/16 21 1100 13300 .31 3225 36 650 10400 .30 3025 58 325 7900 .28 2900
5 5
.094 /8 /16 11/4 3
/4 25 1300 14700 .34 4100 44 790 11400 .33 3900 66 390 8800 .31 3750
7 3
.109 /8 /8 15/ 16 13
/16 29 1600 16100 .37 5300 50 960 12200 .36 5050 72 480 9500 .35 4850
7 3
.125 /8 /8 11/2 7
/8 30 1800 17500 .40 6900 60 1140 12900 .39 6500 78 570 10000 .37 6150

NOTES:
1. Low Carbon Steel as hot rolled, pickled, and 0.010 to 0.031 — 2" Radius recommended test sample sizes:
slightly oiled with an ultimate strength of 42,000 0.031 to 0.078 — 3" Radius Direction of Force Thickness Width
to 45,000 PSI Similar to SAE 1005—SAE 1010. 0.078 to 0.125 — 4" Radius Length
5
2. Electrode Material is CMW® 3. 6. .000" to .029" /8 " 3"
3. Surface of steel is lightly oiled but free from .030" to .058" 1" 4"
grease, scale or dirt. .059" to .115" 11/2" 5"
4. Minimum weld spacing is that distance for 7. Weld time is indicated in cycles of 60 cycle .116" to .190" 2" 6"
which no increase in welding current is neces- frequency. 9. Tolerance for machining of electrode diam-
sary to compensate for the shunted current 8. Tensile shear strength values are based on eter “d” is ±.015" of specified dimension.
effect in adjacent welds. 10. Electrode force does not provide for force to
5. Radius Face electrodes may be used: press ill-fitting parts together.

52
 CONTACTS
APPLICATION DATA SHEET METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

PROJECTION WELDING DATA

DESIGN AND WELDING DATA FOR PROJECTION WELDING LOW CARBON STEELS
PROJECTION DESIGN ELECTRODE DIAMETERS
(d=2 x Projection Diameter) Minimum
H Dp Contacting
Diameter of Minimum Shear Overlap
30o
Fused Zone Strength L
(Single Projection
d
Thickness D Only)
of Base (For Steels S = 2 DP
Thinnest Diameter of Height of Weld Time Welding Dw Having Strength MIN.
Outside Projection Projection Electrode (Cycles) Hold Time Current of 100,000 psi L-S
Piece Dp H Minimum d Minimum D Force 60 Cycles (Cycles) Amperes Dw and below)
Inches Inches Inches Inches Inches Pounds per Sec. Minimum (Approx.) Inches Pounds L Inches
1 1
0.010 0.055 0.015 0.125 /2 50 3 3 2,800 0.112 150 /8
1 1
0.012 0.055 0.015 0.125 /2 80 3 3 3,100 0.112 200 /8
1 1
0.014 0.055 0.015 0.125 /2 100 3 3 3,400 0.112 250 /8
1 5
0.016 0.067 0.017 0.187 /2 115 4 4 3,600 0.112 285 /32
1 5
0.021 0.067 0.017 0.187 /2 150 6 6 4,000 0.140 380 /32
1 3
0.025 0.081 0.020 0.187 /2 200 6 8 4,500 0.140 525 /16
1 7
0.031 0.094 0.022 0.187 /2 300 8 8 5,100 0.169 740 /32
1 7
0.034 0.094 0.022 0.187 /2 350 10 10 5,400 0.169 900 /32
5 9
0.044 0.119 0.028 0.250 /8 480 13 14 6,500 0.169 1,080 /32
5 9
0.050 0.119 0.028 0.250 /8 580 16 16 7,100 0.225 1,500 /32
7 3
0.062 0.156 0.035 0.312 /8 750 21 20 8,400 0.225 2,100 /8
7 3
0.070 0.156 0.035 0.312 /8 900 24 24 9,200 0.281 2,550 /8
7 7
0.078 0.187 0.041 0.375 /8 1,050 26 30 10,500 0.281 2,950 /16
7 1
0.094 0.218 0.048 0.500 /8 1,300 32 30 11,800 0.281 3,700 /2
7 5
0.109 0.250 0.054 0.500 /8 1,650 38 36 13,300 0.338 4,500 /8
7 11
0.125 0.281 0.060 0.500 /8 1,800 45 40 15,000 0.338 5,200 /16
3
0.140 0.312 0.066 0.625 1 2,300 60 45 15,700 0.437 6,000 /4
13
0.156 0.343 0.072 0.625 1 2,800 80 50 17,250 0.500 7,500 /16
7
0.171 0.375 0.078 0.750 1 3,300 105 50 18,600 0.562 8,500 /8
15
0.187 0.406 0.085 0.750 1 3,800 125 50 20,000 0.562 10,000 /16
0.203 0.437 0.091 0.875 11 /4 4,500 145 55 21,500 0.625 12,000 1
0.250 0.531 0.110 1.000 11 /4 6,600 230 60 26,000 0.687 15,000 11 /4

NOTES:
8. Tolerance for Projection Dimensions:
1. Type of Steel—Low Carbon SAE 1010—0.15% Carbon Maximum.
Thickness Thickness
2. Material free of scale, oxide, paint, dirt, etc.
Dimension Up to 0.050" Over 0.050"
3. Size of projection determined by thickness of thinnest piece and projection
Diameter “D” ............................................... ±0.003" ±0.007"
should be on thickest piece.
Height “H” .................................................... ±0.002" ±0.005"
4. Data is based on thickness of thinnest sheet for two thicknesses only.
Maximum ratio between two thicknesses = 3 to 1. 9. Electrode Material:
5. See TABLE BELOW for design of punch and die for making projections. CMW ® 100 ELKONITE ®TC-10 ELKONITE ®10W3
6. Contacting overlap does not include any radii from forming.
7. Projection should be located in center of overlap.

From American Welding Society “Recommended Practices for Resistance Welding”

PUNCH AND DIE DESIGN FOR FORMING WELDING PROJECTIONS

Mat Pt. ±.002 ±.001 ±.001 ±.001 Mat Pt. ±.002 ±.001 ±.001 ±.001
Thickness No. A B C Dr E F H Jr Thickness No. A B C Dr E F H Jr
3 9 1 11
0.010-0.015 1 /8 /16 .055 .033 .015 .015 .035 .005 .094 11 /2 /16 .218 .148 .048 .065 .115 .010
3 9 1 11 1
0.016-0.021 2 /8 /16 .067 .042 .017 .020 .039 .005 .109 12 /2 /16 .250 .172 .054 .075 .137 /64
3 9 1 11 1
.025 3 /8 /16 .081 .050 .020 .025 .044 .005 .125 13 /2 /16 .281 .193 .060 .085 .154 /64
3 9 1 11 1
.031 4 /8 /16 .094 .062 .022 .030 .050 .005 .140 14 /2 /16 .312 .217 .066 .096 .172 /64
3 / 5 13 1
.034 5 /8 16 .094 .062 .022 .030 .050 .005 .156 15 /8 /16 .343 .243 .072 .107 .191 /64
3 9 5 13 1
.044 6 /8 /16 .119 .078 .028 .035 .062 .005 .171 16 /8 /16 .375 .265 .078 .118 .210 /64
3 9 5 13 1
.050 7 /8 /16 .119 .078 .028 .035 .062 .005 .187 17 /8 /16 .406 .285 .085 .130 .229 /64
3 9 11 7
.062 8 /8 /16 .156 .105 .035 .043 .081 .005 .203 18 /16 /8 .437 .308 .091 .143 .240 .020
3 9 13
.070 9 /8 /16 .156 .105 .035 .043 .081 .005 .250 19 /16 1 .531 .375 .110 .175 .285 .025
3 9
.078 10 /8 /16 .187 .128 .041 .055 .104 .010

Material: Tool Steel. Finish all over and harden to 65-68 Rockwell “C” scale. Note: All working surfaces of die unit must be polished.

From American Welding Society “Recommended Practices for Resistance Welding”

53
 CONTACTS
APPLICATION DATA SHEET METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

SCHEDULE FOR SPOT WELDING STAINLESS STEEL

ELECTRODE DIAMETER MINIMUM MINIMUM DIAMETER
AND SHAPE CONTACTING WELD OF
THICKNESS (See Note 5) WELDING OVERLAP SPACING FUSED MINIMUM SHEAR STRENGTH
“T” of CURRENT (See Note ZONE
THINNEST (Approx.) 6 Below) LB.
OUTSIDE
PIECE WELD AMPS Ultimate Tensile Strength of Metal
(See Notes TIME
1, 2, 3 and 4 ELECTRODE Tensile Tensile 70000 90000 150000
Below) FORCE CYCLES Strength Strength Up to Up to Psi
D, IN., d, IN., (60 Below 150000 Psi IN. 90000 150000 and
INCHES Min. Max. LB. Per Sec.) 150000 Psi and Higher IN. IN. Approx. Psi Psi Higher
3 3 3 3
0.006 / 16 / 32 180 2 2000 2000 / 16 / 16 0.045 60 70 85
3 3 3 3
0.008 / 16 / 32 200 3 2000 2000 / 16 / 16 0.065 150 170 210
1 1 1 1
0.012 /4 /8 260 3 2100 2000 /4 /4 0.076 185 210 250
1 / 1 1
0.014 /4 8 300 4 2500 2200 /4 /4 0.082 240 250 320
1 1 1 5
0.016 /4 /8 330 4 3000 2500 /4 / 16 0.088 280 300 380
1 1 1 5
0.018 /4 /8 380 4 3500 2800 /4 / 16 0.093 320 360 470
1 5 5 5
0.021 /4 / 32 400 4 4000 3200 / 16 / 16 0.100 370 470 500
3 5 3 7
0.025 /8 / 32 520 5 5000 4100 /8 / 16 0.120 500 600 680
3 3 3 1
0.031 /8 / 16 650 5 6000 4800 /8 /2 0.130 680 800 930
3 3 7 9
0.034 /8 / 16 750 6 7000 5500 / 16 / 16 0.150 800 920 1100
3 3 7 5
0.040 /8 / 16 900 6 7800 6300 / 16 /8 0.160 1000 1270 1400
3 3 7 11
0.044 /8 / 16 1000 8 8700 7000 / 16 / 16 0.180 1200 1450 1700
1 1 1 3
0.050 /2 /4 1200 8 9500 7500 /2 /4 0.190 1450 1700 2000
1 1 9 7
0.056 /2 /4 1350 10 10300 8300 / 16 /8 0.210 1700 2000 2450
1 1 5
0.062 /2 /4 1500 10 11000 9000 /8 1 0.220 1950 22400 2900
5 1 5
0.070 /8 /4 1700 12 12300 10000 /8 1 1/ 8 0.250 2400 2800 3550
5 5 11
0.078 /8 / 16 1900 14 14000 11000 / 16 1 1/ 4 0.275 2700 3400 4000
5 5 3
0.094 /8 / 16 2400 16 15700 12700 /4 1 1/ 2 0.290 3550 4200 5300
3 3 13
0.109 /4 /8 2800 18 17700 14000 / 16 1 1/ 2 0.290 4200 5000 6400
3 3 7
0.125 /4 /8 3300 20 18000 15500 /8 2 0.300 5000 6000 7600

NOTES: 5. Electrode Material, CMW® 3, CMW ® 100, or ELKONITE® 10W3

1. Types of Steel—301, 302, 303, 304, 308, 309, 310, 316, 317, 321, 347 and 6. Minimum weld spacing is that spacing for two pieces for which no special
349 precautions need be taken to compensate for shunted current effect of
2. Material should be free from scale, oxides, paint, grease and oil. adjacent welds. For three pieces increase spacing 30 per cent.
3. Welding conditions determined by thickness of thinnest outside piece “T.”
4. Data for total thickness of pile-up not exceeding 4 “T”. Maximum ratio
between two thicknesses 3 to 1.

SCHEDULE FOR SEAM WELDING STAINLESS STEEL

ELECTRODE MINIMUM
WIDTH CONTACTING
AND OVERLAP
THICKNESS SHAPE (See Note
“T” OF (See Note 6 Below)
THINNEST 5 Below)
OUTSIDE OFF TIME
PIECE FOR MAXIMUM
(See Notes 1, SPEED MAXIMUM WELDING
2, 3 and 4 ELECTRODE ON TIME (Pressure-Tight) WELD SPEED CURRENT
Below) FORCE WELDS (Approx.)
CYCLES CYCLES IN. PER MINUTE PER INCH
INCHES W, IN., Min. LB. (60 Per Sec.) 2 “T” 4 “T” 2 “T” 4 “T” 2 “T” 4 “T” AMPS. IN.
3 1
0.006 / 16 300 2 1 1 60 67 20 18 4000 /4
3 1
0.008 / 16 350 2 2 2 67 56 18 16 4600 /4
3 1
0.010 / 16 400 3 2 2 45 51 16 14 5000 /4
1 5
0.012 /4 450 3 2 2 48 55 15 13 5600 / 16
1 5
0.014 /4 500 3 2 3 51 46 14 13 6200 / 16
1 5
0.016 /4 600 3 2 3 51 50 14 12 6700 / 16
1 5
0.018 /4 650 3 2 3 55 50 13 12 7300 / 16
1 3
0.021 /4 700 3 2 3 55 55 13 11 7900 /8
3 7
0.025 /8 850 3 3 4 50 47 12 11 9200 / 16
3 7
0.031 /8 1000 3 3 4 50 47 12 11 10600 / 16
3 /
0.040 /8 1300 3 4 5 47 45 11 10 13000 2
1 5
0.050 /2 1600 4 4 5 45 44 10 9 14200 /8
1 5
0.062 /2 1850 4 5 7 40 41 10 8 15100 /8
5 11
0.070 /8 2150 4 5 7 44 41 9 8 15900 / 16
5 11
0.078 /8 2300 4 6 7 40 41 9 8 16500 / 16
5 3
0.094 /8 2550 5 6 7 36 38 9 8 16600 /4
3 13
0.109 /4 2950 5 7 9 38 37 8 7 16800 / 16
3 7
0.125 /4 3300 6 6 8 38 37 8 7 17000 /8

NOTES:
1. Types of Steel—301, 302, 303, 304, 308, 309, 310, 316, 317, 321, 347 and between two thicknesses 3 to 1.
349 5. Electrode material, CMW ® 100
2. Material should be free from scale, oxides, paint, grease and oil. 6. For large assemblies minimum contacting overlap indicated should be
3. Welding conditions determined by thickness of thinnest outside piece “T.” increased 30 per cent.
4. Data for total thickness of pile-up not exceeding 4 “T” . Maximum ratio

From American Welding Society “Recommended Practices for Resistance Welding”

54
 CONTACTS
APPLICATION DATA SHEET METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

Spot welding galvanized low-carbon steel

Material Electrode Net Welding Weld Weld Minimum Minimum Minimum

Thickness Diameter Electrode Current Time Nugget Tension- Weld Contacting
And Shape Force (Approx.) Size Shear Spacing Overlap
Strength

notes 1, 2,
&3 note 4

D d Oc

Inches In. In. Deg. Lb. Amps. Cycles In. Lb. Inches Inches
NOTES: 0.022 5/8 3/16 120 300 13000 8 0.15 550 5/8 5/8
0.030 5/8 3/16 120 400 13000 10 0.16 1000 5/8 5/8
1. Material must be free from dirt, grease, paint etc. 0.036 5/8 1/4 120 500 13500 12 0.19 1180 3/4 5/8
prior to welding, but may have light oil. 0.039 5/8 1/4 120 650 14000 13 0.21 1400 3/4 5/8
2. Two equal metal thicknesses of each gage. 0.052 5/8 1/4 120 725 14500 18 0.22 1700 7/8 11/16
3. Commercial coating weight is 1.25 oz. per square 0.063 3/4 1/4 120 850 15500 22 0.24 2500 1-1/8 3/4
0.078 3/4 5/16 120 1200 19000 24 0.28 3200 1-1/4 7/8
foot. 0.093 3/4 3/8 120 1400 21000 30 0.34 4200 1-1/2 1
4. Electrode Material-RWMA Group A, Class 2. 0.108 7/8 3/8 120 1750 20000 37 0.40 5900 1-3/4 1-1/8
CMW® 3. 0.123 7/8 3/8 120 2000 20000 42 0.48 7200 2 1-1/8
5. Water Cooling: 2 gallons per minute.
Projection welding galvanized low-carbon steel
Projections should be larger in diameter for
galvanized than for uncoated material. Material Electrode Net Welding Weld Weld Minimum Projection
Thickness Diameter Electrode Current Time Nugget Tension- Size
And Shape Force (Approx.) Size Shear
Strength

notes 1, 2,
&3 note 4 (For Single
Projectsions
Only)

D d
Diameter Height
Inches In. In. Lb. Amps. Cycles In. Lb. In. In.
0.039 5/8 3/8 250 10000 15 0.15 925 0.187 0.041
0.063 5/8 7/16 400 11500 20 0.25 2050 0.218 0.048
0.078 3/4 1/2 550 16000 25 0.25 2700 0.250 0.054
0.093 3/4 1/2 750 16000 30 0.30 4300 0.250 0.054
0.108 7/8 1/2 950 22000 33 0.31 4900 0.250 0.054

Seam welding galvanized low-carbon steel

NOTES:
Material Electrode Net Welding Weld Welding Welds Minimum
1. Material must be free from dirt, grease, paint Thickness Width Electrode Current Time Speed Per Contacting
etc. prior to welding, but may have light oil. And Shape Force (Approx.) Inch Overlap

2. Two equal metal thicknesses of each gage.

notes 1, 2, note 4
3. Commercial coating weight is 1.25 oz. per &3 W L

square foot.
4. Electrode Material-RWMA Group A, Class 2. Heat Cool
30o
Time Time
CMW® 3.
E
5. Pressure-tight joints require stripping the zinc
coating prior to welding. W E
6. Nominal electrode diameter ranges between 8 to Inches In. In. Lb. Amps. Cycles Cycles In./Min. W/In. Inches
10 inches. 0.015 3/8 1/4 900 15000 2 2 120 7.5 3/8
0.036 1/2 1/4 1100 18000 4 2 60 10.0 1/2
From American Welding Society “Recommended 0.039 1/2 1/4 1200 19000 4 3 60 9.0 1/2
Practices for Resistance Welding.” 0.052 1/2 1/4 1350 20000 5 1 90 7.0 9/16
0.063 1/2 5/16 1500 19800 8 2 54 7.0 5/8
0.078 5/8 5/16 1850 23000 10 7 30 7.0 11/16

55
 CONTACTS
DATA SHEET METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING
RECOMMENDED ELECTRODE MATERIALS
The process of resistance welding makes it possible to join most metals, similar or dissimilar. 2. Metallurgical properties
Bonds of adequate strength are obtainable for an extremely wide range of applications. Selecting 3. Nature of resultant weld or alloy
electrodes of the proper alloy is a most important consideration in producing good welds at the 4. Weld strength
required speed. The chart below is a valuable guide to this selection. 5. Relative accuracy in control of welding conditions necessary

The weldability of two materials as expressed in the following chart has been derived after careful The weldability of metals as shown in the chart applies only when conventional spot welding
laboratory study and field survey of many factors which influence the welding or resultant weld methods are used on similar thicknesses of material. However, many metal combinations which
of the metals. The factors include: are listed as having a “poor weldability” may be satisfactorily joined by using a special setup or
procedure.
1. Thermal and electrical conductivity
There is a CMW® Alloy for each specific welding application. Experienced CMW engineers will
provide assistance with special problems.

Electrode Materials For SPOT WELDING Similar and Dissimilar Metals

Galva-
Tungsten Cad- nized C. R. Phos- Alu- C. P.
Mag- Nickel Stainless Chrome Steel Terne Tin Scaly Silicon Nickel Cupro Brass Brass Alu-
Molyb- Nickel mium Steel phor Copper minum Tita-
nesium Alloys Steel Steel Zn. Plate Plate Plate Steel Bronze Silver Nickel Yellow Red minum
denum Plate Bronze Alloys nium
I I
Commercially Pure A III
Titanium I I 1
III

Aluminum C I E II E II H I H II E I D I D I D I E II D II D II D II E IIH V C I C I
23 34 34 34 34
2S-3S I 15 I 25 I 23 I 4 I 38 I 9 I 9 I 9 I 9 I 34 I 25 I 25 I 5 I 2 I 2 I 1 I 1
I
AluminumAlloys C I E II E II H I H II E II D I D I D I E II D II D II D II E II E V D 1
Duralumin
52S-17S-24S I 1 5 I 2 I 2 3 I 24 3 I 3 8 I 34
9 I 394 I 394 I 394 I 34 I 25 I 25 I 6 I 2 I 2 I 1
I
H IIH I E II E II H I H II H II H I H I H I H II D IID II D IID II D II E II K V
Copper—Pure
V 3 V 5 V V 3 6 V 24 3 V 3 4 V 3
9 V 394 V 394 V 394 V 34 V 56 V 56 V 56 D 56 V 6 V 6 V 2
I 1
Brass—Red H I D II D II H IIH II H II H I H II H I H II D IID II D IID II D II E II
5-25% Zinc II 5 V 6 V 6 V V V V 6 V 6
V 6 II34 V 6 V 6 V 6 V II II56
I I
Brass—Yellow E I D IID II H IIH II E II E I E II E I E II C IIC II C IIC II C II
25-40% Zinc I I 5 IV 6 I I 6 IV IV IV 6
IV 6 IV 6
IV 6 IV 3 4 IV 1 IV 1 IV 1 IV 1 I I 1
D I C I I C VI E II I E I I E I
II E I E I
II E I H I
II E II C IIC II C II B II
Cupro-Nickel
II25 II II II 2 II28 II 2
II 2 II 2
II 2 II 7
II 3 II 1 II 1 II II 1
D I C I I C VI E II I E I I E I
II E I E I
II E I H I
II E II C IIC II B II
Nickel Silver
II25 II II II 2 II28 II 2
II 2 II 2
II 2 II 7
II 3 II 1 II 1 II 1
D I C I I D I I E I II E I I E I
II E I E I
II E I H I
II D II C II B II
Silicon Bronze
II25 II II II II 8 II II II II II 7
II 3 II 1 II 1

Phosphor Bronze E I D I I D I I E II I E I I E I
II E I E I
II E I H I
II D II B II
Grades A, C, & D II25 II II II II 8 II II II II II 7
II 3 II 1
I I
C. R. Steel D II D II D II B II B II C II C I B II C I E II A II
H. R. Steel—Clean II 3 I I 3 I I 3 III I I 8 I I II II 6
II II 7 II 1 BLOCK INTERPRETATION

II I ]
Scaly H II D I D II D II D I D II D I E II
WELD- ELECTRODE
H. R. Steel I 3 I 7 I 7 I 7 I 6 I 6 I 6 I 7
II 7 II II 8 II II 7 II 7 II 7 II ABILITY AGAINST

E I I E I D I D I I C II I C I I D I
II C I D I
II D I
Tin Plate
I 9 I 59 I 39 I 9 I I 8 I 9
I 69 I 6
9 I 69 SPECIAL
ELECTRODE
INFORMA-
E II E I D I D II C IIC II C I
II C I C I AGAINST
TION
Terne Plate I 9
II I 59 I 3 I 9 I I 8 I I 6 I 6

Galvanized Steel E I I E I D I I D I I C I I C I I C I C I II
Zinc Plate I 9 I II 5 9 I II 3 I I 9 I I 8 9 I 9 I II 9
E II E I D I D II C IIC II C I WELDABILITY
Cadmium Plate
I 9 I 5 I 3 I 9 I I 8 I 9 As a basis for comparison cold rolled
(mild) steel has been chosen and its
III weldability designated as “excellent.”
D II D II D II B II B II
Chrome Plate A—Excellent E—Poor
II 8 II 8 II 8 II 8 II 8 B—Very Good H—Very Poor
C—Good K—Impractical
Stainless Steel D II D I I D III A IIIII D—Fair
II III 1 ELECTRODES
18-8 Type I 25 II I II
I– CMW 28
Nickel D II C II B II II– CMW® 3
III– CMW® 100 SPECIAL INFORMATION
Grade A II25 II 1 II 1 IV– ELKONITE® 10W3 1. Good weld strength.
Nickel Alloys V–ELKON® 100M* 2. May be welded under special conditions.
D II B II VI– ELKONITE® 1W3 3. Low weld strength.
Monel Nichrome
(High Res.) I I 25 II 1 or TC-5 4. No actual weld nugget occurs, a “stick” is obtained.
5. Welding conditions must be accurately controlled.
*ELKON® 100 W may be substituted. 6. Keep electrode clean to prevent sticking to the work.
Magnesium D I ELKONITE® 10W3 or TC-10 may be 7. Good practice recommends cleaning steel before welding.
Alloys I 15 interchanged. 8. Use one flat tip to minimize distortion or discoloration.
Electrode materials in circles are 9. Coating may dissolve in other metals or burn away.
Molybdenum D II second choice.
Tungsten II25
56 ORDER BY CMW PART NUMBER ONLY
 CONTACTS
RESISTANCE WELDING ELECTRODE MAINTENANCE METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

This Chart shows graphically the importance of Electrode maintenance. This is not only important from the quality of the weld,
which is of first importance, also extra load added to the welding machine and equipment. Read the data on the chart, you can
then draw your own conclusions.

YOU CAN’T AFFORD TO NEGLECT YOUR ELECTRODES !

Keep your Electrodes dressed for maximum production and quality welds.

A TIP DRESSER WILL PAY DIVIDENDS !

We can supply you with hand operated Tip Dressers or Pneumatic Power Driven Dressers. Design or type will depend on your
production requirements. P. 46 & 47.

RESISTANCE WELDING

400% PROPER 56% 125% 300% 525% 800%

TOO SMALL NEW TIPS TOO LARGE TOO LARGE TOO LARGE TOO LARGE TOO LARGE
(A) (B) (C) (D) (E) (F) (G)

2,460 9,823 15,337 22,100 39,300 61,350 88,500

amperes only amperes amperes amperes amperes amperes amperes
would be would be would be would be would be would be would be
required (†) required (†) required (†) required (†) required (†) required (†) required (†)

127,640 lbs. sq. in. 31,960 lbs. sq. in. 20,470 lbs. sq. in. 14,200 lbs. sq. in. 7,990 lbs. sq. in. 5,120 lbs. sq. in. 3,500 lbs. sq. in.
pressure (*) pressure (*) pressure (*) pressure (*) pressure (*) pressure (*) pressure (*)

RESULT: RESULT: RESULT: RESULT: RESULT: RESULT: RESULT:

Four times too Correct pressure, Only 60% of Only 45% of the Only 25: of Only 16% of Only 11% of
much pressure, current, tips. proper pressure, required pressure required current required current needed current
current. Very Excellent weld. current. and current. and pressure. and pressure. and pressure.
severe indentation This is the size Borderline weld. Welds would be No weld would This is a very This is an
and spitting tip (new) for Lower strength. unacceptable. be made if tips serious condition absurd (though
from high which the Last diameter If the current were left in and the only cure often seen)
current density. pressure, time, size tolerated or time were this condition. is to dress the condition that
and current unless current increased with tips back to (B) only heats a spot.
CORRECTION: are adjusted. and pressure tips in this condition.
Cut pressure were set between condition a
to 1/4 the 1/4 and 5/16 large weak weld
Cut current size tips. would result.
to 1/4

(†)Current density required for this gage to be 200,000 amps per sq. in. (*) Five inch diameter air cylinder A 80 lbs. air pressure—1570 lbs. on ram.
Setting is 9,900 amps for condition (B)
Reproduced by permission of McGraw-Hill Book Company, Inc.

57
 CONTACTS
WELDING ELECTRODE / CAP EVALUATION FORM METALS
NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc. WELDING

Facility _______________________________________________________
Location ______________________________________________________
Contact ____________________________ Phone ______________ Fax _____________ Date
_______________
Equipment --- Plant/Line # _________________________________________
Fixed Press Hand Online Offline Other
Robot Auto (Specify)
TYPE

Pinch Scissor Other Comment

C Gun (Specify)
GUN STYLE

Old Good Poor

New
CONDITION

Number of
Linear Non-linear None
STEPPER Steps
CAPABILITY
12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
UP-SLOPE Yes No 12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
CAPABILITY 12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
Yes No 12345678901234567890123456789012123
PULSE 12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123
CAPABILITY 12345678901234567890123456789012123
12345678901234567890123456789012123
12345678901234567890123456789012123 123456789012345678901234567890121234
123456789012345678901234567890121234
123456789012345678901234567890121234
Schedules Transformers Guns per Transformer Transformer 123456789012345678901234567890121234
123456789012345678901234567890121234
123456789012345678901234567890121234
123456789012345678901234567890121234
NUMBER OF per SCR per SCR Transformer Taps KVA 123456789012345678901234567890121234
123456789012345678901234567890121234
123456789012345678901234567890121234
123456789012345678901234567890121234
123456789012345678901234567890121234

Workpieces (Materials)
CHECK ONE (per workpiece)
POSITION THICKNESS Bare Steel Aluminized Zn Electroplate Galvanneal Hod Dipped Organic
Galvanized
Outside

Inside

Inside

Outside

Good Poor Comments

FIT-UP
12345678901234567890123456789012123456789012345678901
12345678901234567890123456789012123456789012345678901
12345678901234567890123456789012123456789012345678901
12345678901234567890123456789012123456789012345678901
12345678901234567890123456789012123456789012345678901
12345678901234567890123456789012123456789012345678901

ELECTRODES
NOSE A B C D E F Other
(pointed) (Dome) (Flat) (Offset) (Truncated) (Radius) (specify)
STYLE 12345678901234567890123456789012123456789012345678901234567
12345678901234567890123456789012123456789012345678901234567
12345678901234567890123456789012123456789012345678901234567
12345678901234567890123456789012123456789012345678901234567
Class 1 Class 2 Class 20 Other 12345678901234567890123456789012123456789012345678901234567
(DSC) (Specify) 12345678901234567890123456789012123456789012345678901234567
MATERIAL 12345678901234567890123456789012123456789012345678901234567
12345678901234567890123456789012123456789012345678901234567
12345678901234567890123456789012123456789012345678901234567
12345678901234567890123456789012123456789012345678901234567
12345678901234567890123456789012123456789012345678901234567
12345678901234567890
12345678901234567890 12345678901234567890123456789012123456789012345678901234567
12345678901234567890
Female Male 12345678901234567890 Comments
TAPER 12345678901234567890
12345678901234567890
12345678901234567890
STYLE 12345678901234567890
12345678901234567890
12345678901234567890
Good Poor Requires
Backup
ALIGN-
MENT
58
 NSRW Co., Inc. (800) 933-6779, FAX: (205) 663-3221 Authorized Distributor CMW Inc.

Resistance Welding Electrodes and Holders

DO’S DON’TS

1. Use the proper electrode material for the 1. Never use unidentified electrodes or elec-
job you are doing. trode materials.
2. Use standard electrodes wherever pos- 2. Avoid special, offset or irregular tips when
sible. the job can be done with a standard straight
3. Use the most suitable tip diameter for the tip.
thickness of stock being welded.
3. Don’t use small tips on heavy gauge weld-
4. Use open sight drains to observe more ing jobs or large tips on small work.
readily the water flow through the holders.
4. Don’t forget to turn on the cooling water full
5. Connect the water inlet hose to the proper force before starting to weld.
holder inlet so that the water flows through the
center cooling tube first.
5. Never use water hose that will not fit the
6. Internally cool the spot welding tips with holder water connection nipples snugly.
cool water flowing at a rate of at least 1 / 2
gallons per minute through each tip. 6. Do not allow water connections to become
leaky, clogged or broken.
7. Be sure the internal water cooling tube of
the holder projects into the tip water hole to 7. Avoid using holders with leaking or de-
within 1 / 4 " of the tip hole bottom. formed tapers.
8. Adjust the internal water cooling tube of 8. Never use electrode holders that do not
the holder to the proper height when changing have an adjustable internal water cooling tube.
to a different length tip.
9. Be sure top of adjustable water cooling 9. Do not permit adjustable water tube to be
tube in holders is cut at an angle so as to avoid “frozen” by accumulation of deposits. A few
jamming tip down and shutting water off. drops of oil periodically will keep the tube
free.
10. Place a thin film of cup grease on the tip
taper prior to inserting in the holder, to make 10. Do not allow electrodes to remain idle in
it easier to remove. tapered holder seats for extended periods.
11. Use ejector type holders for easy removal 11. Don’t use pipe wrenches or similar tools
of tips and to avoid damage to tip tapers. in removing electrodes.
12. Keep the tip taper and holder taper clean,
12. Avoid using white lead or similar com-
smooth and free of foreign deposits.
pounds to seal a leaking taper.
13. Dress spot welding electrodes frequently
enough to maintain the quality of the welds. 13. Never permit a spot welding tip to mush-
room enough to make dressing difficult.
14. Dress electrodes in a lathe to their origi-
nal contour whenever possible. 14. Never dress electrodes with a coarse file.
15. Use a rawhide or rubber mallet for striking 15. Don’t pound on the holder or tip with a
holder or tips in aligning operations. steel hammer in aligning the welder arms.
16. Provide flood cooling on both sides of the
seam welding wheel. 16. Avoid the use of seam welder wheels too
thin to stand the heat or pressure of your job.
17. Use properly designed knurling wheels to
maintain proper seam welding wheel shape. 17. Do not permit seam welding wheel to run
off the corners of the work being welded.

60 ORDER BY CMW PART NUMBER ONLY