AEROSPACE AS954 REV.

G
STANDARD
Issued 1967-06
Reaffirmed 2004-01
Revised 2011-12
Superseding AS954F
Wrenches, Hand, Twelve Point, High Strength, Thin Wall

RATIONALE

The update of AS954 is to incorporate improvements complied from committee findings after publication; consisting of
appropriate range parameters within tables and proof/cyclic loads.

TABLE OF CONTENTS

1. SCOPE .......................................................................................................................................................... 2

2. APPLICABLE DOCUMENTS ........................................................................................................................ 3

3. REQUIREMENTS ......................................................................................................................................... 3

4. NOTES ........................................................................................................................................................ 12

__________________________________________________________________________________________________________________________________________
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SAE AS954G Page 2 of 24

1. SCOPE

This SAE Aerospace Standard (AS) covers high strength thin wall (commercial) sockets, universal sockets, box wrenches
and torque adaptors which possess the strength, clearances, and internal wrenching design so configured that, when
mated with 12-point fasteners conforming to the requirement of AS870, they shall transmit torque to the fastener without
bearing on the outer 5% of the fastener's wrenching points.

Inclusion of dimensional data in this document is not intended to imply that all of the products described herein are stock
production sizes. Consumers are requested to consult with manufacturers concerning lists of stock production sizes.
The dimensional limits of box and combination wrench lengths have been established to provide configuration control for
tool storage applications.

1.1 Classification

Wrenches, sockets, and adaptors covered by this AS shall be of the following types, classes, and styles, as specified:

1.1.1 Type I Sockets

Class 1 Sockets

Style A - Standard length

Style B - Long Length

Class 2 Universal Sockets (also known as Flexible Sockets)

1.1.2 Type II Wrenches, Box

Class 1 Angled End

Style A - Regular Length

Style B - Long Length

Class 2 Modified Offset

Style A - Regular Length

Style B - Short Length

Class 3 Deep Offset

Style A - Regular Length

Style B - Short Length

Class 4 Combination, Box and Open End Wrench

Style A - Regular Length

Style B - Short Length

1.1.3 Type III Torque Adaptors

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SAE AS954G Page 3 of 24

2. APPLICABLE DOCUMENTS

The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications
shall apply. The applicable issue of the other publications shall be the issue in effect on the date of the purchase order. In
the event of conflict between the text of this document and references cited herein, the text of this document takes
precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption
has been obtained.

2.1 SAE Publications

Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside
USA and Canada) or 724-776-4970 (outside USA), www.sae.org.

AS478N Identification Marking Methods

AS870D Wrenching Configuration, Double Hexagon (12-point) for Threaded Fasteners

AS4984A Coating Requirements for Aerospace Hand Tools

2.2 ASME Publications

Available from American Society of Mechanical Engineers, 22 Law Drive, P.O. Box 2900, Fairfield, NJ 07007-2900, Tel:
973-882-1170, www.asme.org.

ASME B46.1 Surface Texture

ASME B107.4 Driving and Spindle Ends for Portable, Hand, Air and Electric Tools

ASME B107.100 Flat Wrenches

ASME B107.17 Gages and Mandrels for Wrench Openings

2.3 ASTM Publications

Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel:
610-832-9585, www.astm.org.

ASTM E 18 Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials, Standard Methods of Test
For

3. REQUIREMENTS

3.1 Illustrations

The illustrations shown herein are descriptive, not restrictive, and are not intended to preclude sockets, universal sockets,
box wrenches, and torque adaptors which are otherwise in accordance with this document.

3.2 Materials

Unless otherwise specified hereinafter, the materials used in the manufacture of the sockets, universal sockets, box
wrenches, and torque adaptors shall be steel, the chemical composition and heat treatment of which shall be such as to
produce tools conforming to the physical requirements specified herein. Powdered metal or cast steel shall not be used.

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SAE AS954G Page 4 of 24

3.3 Marking

The sockets, universal sockets, box wrenches and torque adaptors shall be marked in a permanent manner with the
nominal wrench opening size. In addition, the tools shall be marked with the country of origin and the manufacturer’s
name or with a trademark of known character that the source of manufacture may be determined. Marking requirement
shall be in accordance with AS478N.

3.4 Square Drive Ends

3.4.1 Drive End Dimensions

Internal drive end dimensions shall conform to ASME B107.4. External drive tangs in accordance with ASME B107.4
shall be used to judge the following requirements:

3.4.1.1 Internal Drive Opening

All internal drive openings shall be broached or formed in a smooth and well defined manner. Tools having internal drive
openings shall be firmly attachable to corresponding size external drive tangs by one of the following methods.

3.4.1.1.1 Detent

All four faces of the internal drive opening shall be recessed so that one of the recesses engages the spring loaded steel
ball on the corresponding external drive. For Type III, if the internal drive end thickness is less than twice the dimension
Df in Table 7 of ASME B107.4, the recess shall be centered in the internal drive opening within 0.010 in.

3.4.1.1.2 Cross-hole

One or more of the faces of the internal drive opening shall be drilled with a cross-hole to engage the spring loaded steel
ball or plunger on the corresponding external drive. For Type III, if the internal drive end thickness is less than twice the
dimension Df in Table 7 of ASME B107.4, the cross-hole(s) shall be centered in the internal drive opening within 0.010 in.

3.4.2 Tang Engagement and Disengagement

The detachable sockets, universal sockets and torque adaptors shall be so designed that external tangs can be inserted
into the corresponding internal openings without undue force and shall be manually detachable without the use of any
tools or keys, and meet the minimum force requirements to remove the external tang as specified in applicable tables of
ASME B107.4. Binding between surfaces and corners shall not be evident.

3.5 Hardness

Unless otherwise specified herein, sockets, universal sockets, box wrenches and torque adaptors shall be hardened
throughout to a Rockwell hardness of not less than 40 nor more than 54 on the "C" scale. Hardness definitions,
nomenclature and procedures used herein can be found in ASTM E 18. When grinding is necessary to prepare the test
surface, the amount removed must not exceed 0.007 in on the surface contacted by the indenter.

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SAE AS954G Page 5 of 24

3.6 Finish Wrenches shall be protected with one of the following three types as specified within AS4984A

Type I - Nickel Chromium coating

Type II – Black Oxide or Black Phosphate or other black finish coatings

Type III – Alternate coating (Used in lieu of Nickel chromium plating)

3.6.1 Surface Finish Requirements of Nickel Chromium Plate

On all Type I sockets and universal sockets, the outer longitudinal surface or major diameter thereof shall be bright with
30 µin maximum Ra, except where knurled or grooved. The remaining exterior longitudinal socket surface shall be 150
µin maximum Ra. On all Type II box wrenches and Type III torque adaptors, a minimum of 180 degrees of the outer
periphery of the box ends (90 degrees on each side of the longitudinal axis of the wrench) shall be 30 µin maximum Ra.
Microinch measurements shall be made with a surface-measuring instrument using a 0.030 in roughness width cutoff.
Definitions and nomenclature usedherein can be found in ASME B46.1

3.6.2 Black Oxide or Phosphate Treatment

The tools shall be coated with a chemically produced oxide or phosphate coating followed with a coating of rust
preventive oil. All external surfaces shall have a maximum Ra roughness height value of 250 µin. Microinch
measurements shall be made with a surface-measuring instrument using a 0.030 in roughness width cutoff. Definitions
and nomenclature usedherein can be found in ASME B46.1

3.6.3 Surface Condition

All external surfaces shall be free from pits, nodules, forge flash, burrs, cracks, and other detrimental defects. The
external forge flash shall blend smoothly with adjacent surfaces except that the forge flash shall be completely removed
from the periphery of the heads of box wrenches and torque adaptors and from that portion of the handle which shall be
essentially straight and uniform in section dimensions.

3.7 Test Proof Load

Torque shall be applied with a suitable torque producing machine. Torque shall be applied at a speed of 15deg/min to
30deg/min until proof load value is achieved; test load shall be held for 10 seconds, then torque shall be released. This
proof load test shall be performed in the clockwise and counter clockwise direction. The items covered herein shall
withstand the proof loads set forth in the applicable tables, without failure or permanent deformation (set) which might
affect durability or serviceability of the tools. Adequate safeguards for personnel and property shall be employed in
conducting all tests. Approved eye protection shall be worn at all times and equipment safety shields in place when tests
are in progress.

3.7.1 Mandrels for Wrench Openings

Wrench openings shall be tested on hexagonal mandrels. The size of all mandrels shall conform to the dimensions and
tolerances specified in Table 1. The fourth column of Table 1 (Mandrel Engagement Maximum Depth) does not apply
when testing Type II, Wrenches and Type III, Torque Adaptors.

Mandrels shall be hardened to a Rockwell hardness of not less than 55 on the "C" scale and shall have smoothly finished
wrench engagement surfaces.

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SAE AS954G Page 6 of 24

TABLE 1 - HEXAGON MANDREL DIMENSIONS AND ENGAGEMENT DATA

For Nominal Hexagonal Mandrel Mandrel Engagement No Bearing Area

Wrench Wrench Across Flats Maximum Depth of for
Sizes Opening Tolerances Insertion Mandrel (Ref)
3/16 0.1875 +0.001 -0.002 0.094 0.0006
7/32 0.2188 +0.001 -0.002 0.109 0.0007
1/4 0.2500 +0.001 -0.002 0.125 0.0007
9/32 0.2812 +0.001 -0.002 0.141 0.0008
5/16 0.3125 +0.001 -0.002 0.141 0.0009

11/32 0.3438 +0.001 -0.002 0.156 0.0010

3/8 0.3750 +0.001 -0.002 0.156 0.0011
7/16 0.4375 +0.001 -0.002 0.218 0.0013
1/2 0.5000 +0.001 -0.003 0.265 0.0015
9/16 0.5625 +0.001 -0.003 0.328 0.0017

5/8 0.6250 +0.001 -0.003 0.375 0.0019

11/16 0.6875 +0.001 -0.003 0.375 0.0021
3/4 0.7500 +0.001 -0.003 0.437 0.0022
25/32 0.7812 +0.001 -0.003 0.453 0.0023
13/16 0.8125 +0.001 -0.003 0.453 0.0024

7/8 0.8750 +0.001 -0.003 0.500 0.0026

15/16 0.9375 +0.001 -0.003 0.546 0.0028
1 1.0000 +0.001 -0.003 0.546 0.0030
1-1/16 1.0625 +0.001 -0.003 0.625 0.0032
1/18 1.1250 +0.001 -0.003 0.656 0.0034

1-3/16 1.1875 +0.001 -0.003 0.656 0.0035

1-1/4 1.2500 +0.001 -0.003 0.750 0.0037
1-5/16 1.3125 +0.001 -0.003 0.765 0.0039
1-3/8 1.3750 +0.001 -0.003 0.781 0.0041
1-7/16 1.4375 +0.001 -0.003 0.875 0.0043

1-1/2 1.5000 +0.001 -0.003 0.875 0.0045

1-9/16 1.5625 +0.001 -0.007 0.875 0.0047
1-5/8 1.6250 +0.001 -0.007 1.000 0.0049
1-11/16 1.6875 +0.001 -0.007 1.000 0.0050
1-3/4 1.7500 +0.001 -0.007 1.093 0.0052

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SAE AS954G Page 7 of 24

3.7.2 Test Plug

3.7.2.1 Type I, Class 1 Sockets

A square test plug of suitable strength and complying with the minimum dimensional requirements of the external drive
tang specified in ASME B107.4 shall be employed. The test plug may be driven by any suitable manual or mechanical
means. The socket shall then be engaged on the end of the mandrel to a maximum depth in accordance with Table 1. A
stop may be set at the outer end of the test plug to prevent slippage of the socket end-wise from the mandrel.

3.7.2.2 Type I, Class 2 Universal Sockets

A test plug as in 3.7.2.1 shall be used except that a means shall be provided to keep universal socket parts in the axis
about which the load is applied.

3.7.3 Qualification Test

3.7.3.1 All Type I Sockets, Type II Wrenches, Type III Torque Adaptors

As a design and process qualification test the manufacturer shall maintain a record of compliance with the cyclic load
requirements with a sample tool conforming to the applicable Figures. The test shall be required whenever the design or
method of manufacture is significantly changed.

The cycle load test shall consist of 2000 applications of the cyclic torque load both the clockwise and counter clockwise
direction at the rate between 15 - 120 cycles per minute, using the Table 1 mandrel dimensions and engagements. The
tool being tested shall be indexed 30 degrees after 1000 load applications and shall withstand the torques proof load
following the cyclic load test. The cyclic load value for Type I Sockets is to be 70% of the proof load. The cyclic load value
for Type II Wrenches and Type III Torque Adapters is located in the respective tables.

3.7.3.2 Fragmentation Test

One sample of each tool of Type I, II and III shall be loaded to failure. Failure shall not result in fragmentation into two or
more pieces. The tool shall be considered to have passed the fragmentation test if it:

a. Fails without fragmentation at any torque above the proof load

b. Reaches the following maximum torque levels without failure

1. 1/4 in square drive tools - 800 in-lbs

2. 3/8 in square drive tools - 3000 in-lbs

3. 1/2 in square drive tools - 7800 in-lbs

4. 3/4 in square drive tools - 21600 in-lbs

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SAE AS954G Page 8 of 24

3.8 Wrench Opening

3.8.1 Wrench Design

The internal wrench design of all Type I Sockets, Type II Wrenches, and Type III Torque Adaptors shall be so configured
that, when mated with 12-point fasteners conforming to the requirements of AS870D, they transmit torque to the fastener
without bearing on the outer 5% of the fastener's wrenching points (see Figure 1A).

3.8.2 Qualification Test Procedure for Wrench Design

Conformance of the wrench design to the requirements of 3.8.1 shall be demonstrated on a sample tool by the use of a
mandrel or a template. The mandrel or template shall conform with the requirements of Figure 1B.

FIGURE 1A - INTERNAL WRENCH ENGAGEMENT

3.8.2.1 The mandrel shall be of a nonferrous or ferrous material. When nonferrous material is used, torque shall be
applied by the wrench to the mandrel to a level sufficient to cause an impression on the mandrel indicative of
the loading pattern between the wrench and mandrel. When ferrous material is used, bluing shall be applied to
the flats of the mandrel prior to the application of torque by the wrench to the mandrel to a level sufficient for the
bluing to show the loading pattern. Care should be taken so that the true loading pattern can be discerned. The
loading pattern shall not be on the corners of the mandrel

3.8.2.2 The template shall be used in conjunction with an optical comparator. The centerline of the wrench
configuration shall be placed on the centerline of the template and rotated until a point of contact between the
wrench configuration and the template is established. The point of contact shall not be on the corners of the
template.

FIGURE 1B - MANDREL FOR WRENCH DESIGN TEST PROCEDURE

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SAE AS954G Page 9 of 24

3.8.3 Bolt and Nut End Opening Tolerance

Wrench opening tolerance shall be as specified in ASME B107.17. The bolt clearance hole shall not infringe on the
internal wrench design or alter its shape for the minimum depth of the wrench opening "D" in the appropriate figure.

FIGURE 2A - BOLT CLEARANCE HOLE

3.8.4 Clearance Holes

3.8.4.1 Through Hole Clearance

A through clearance hole with a minimum diameter of 1/2 the nominal square drive size, or equal to the bolt clearance
diameter, shall extend completely through each socket.

3.8.4.2 Bolt Clearance Hole

The bolt clearance hole shall be in accordance with the diameter, length and location defined in Figures 2A and 2B, and
Table 2. The bolt clearance hole shall be measured using the gage in Figure 2C. A "web" within the bolt clearance hole
is acceptable provided all dimensional requirements are met.

FIGURE 2B – BOLT CLEARANCE HOLE REQUIREMENT

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SAE AS954G Page 10 of 24

TABLE 2 - BOLT CLEARANCE HOLE REQUIREMENTS

A G K
WRENCH ACROSS BOLT CLEARANCE BOLT CLEARANCE
OPENING FLATS DIAMETER LENGTH
NOMINAL MIN. MIN.
3/16 0.1875 0.157 0.342
7/32 0.2188 0.190 0.357
1/4 0.2500 0.190 0.393
9/32 0.2812 0.250 0.429
5/16 0.3125 0.250 0.464
11/32 0.3438 0.313 0.515
3/8 0.3750 0.313 0.515
7/16 0.4375 0.375 0.595
1/2 0.5000 0.438 0.650
9/16 0.5625 0.500 0.655
5/8 0.6250 0.563 0.760
11/16 0.6875 0.625 0.833
3/4 0.7500 0.688 0.965
25/32 0.7813 0.688 0.995
13/16 0.8125 0.688 1.025
7/8 0.8750 0.750 1.129
15/16 0.9375 0.813 1.179
1 1.0000 0.875 1.230
1-1/16 1.0625 0.938 1.250
1-1/8 1.1250 1.000 1.280
1-3/16 1.1875 1.063 1.290
1-1/4 1.2500 1.063 1.310
1-5/16 1.3125 1.125 1.340
1-3/8 1.3750 1.188 1.400
1-7/16 1.4375 1.250 1.450
1-1/2 1.5000 1.313 1.500
1-9/16 1.5625 1.375 1.550
1-5/8 1.6250 1.438 1.600
1-11/16 1.6875 1.500 1.650
1-3/4 1.7500 1.563 1.700

FIGURE 2C - BOLT CLEARANCE HOLE GAGE

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SAE AS954G Page 11 of 24

3.9 Type I, Class 2, Universal Sockets

In addition to the requirements of 3.4, universal sockets shall be provided with a friction type device which will hold the
drive end and the socket end in any set position with a force adequate to hold the universal joint against gravity. The
hinge pin shall be solid and not extend beyond the periphery of the universal joint. The universal joint shall be capable of
rotation in a complete arc when the angular deviation of either end member from the common centerline is 40 degrees. A
bolt clearance hole and other universal socket dimensions shall conform to Figures 7 and Table 7, and Figure 8 and
Table 8. A "web" within the bolt clearance hole is acceptable provided all dimensional requirements are met.

3.10 Type II Wrenches, Type III Torque Adaptors

3.10.1 Type II, Class 1 Box Wrench, Angled End

The angled end box wrenches shall be 12 point, double hexagon double-head design, shall possess the wrenching
design of 3.8.1 and shall conform to Figures 9 and 11.

3.10.2 Type II, Class 2, Style A & B Box Wrench, Modified Offset

The modified offset box wrenches shall be 12-point, double hexagon double-head design, shall possess the wrenching
design of 3.8.1 and shall conform to Figures 9 and 12.

3.10.3 Type II, Class 3, Style A & B Box Wrench, Deep Offset

The deep offset box wrenches shall be 12-point, double hexagon double-head design, shall possess the wrenching
design of 3.8.1, and shall conform to Figures 9 and 13.

3.10.4 Type II, Class 4, Style A & B Box Wrench, Combination

The combination box and open end wrenches shall have a box wrench head on one end and an open end wrench on the
other end. The box wrench head shall be 12-point, double hexagon with the wrenching design of 3.8.1 and shall conform
to Figure 9 and Table 9. The open end wrench head shall conform to ASME B107.6 Type III in B107.100. The
combination wrench shall conform to Figure 14.

3.10.5 Type III Torque Adaptor

Torque adaptors shall have a square drive at one end and a 12-point double hexagon box wrench with the wrenching
design of 3.8.1 at the other end. One side of the square drive shall be within 3 degrees of parallel to a line drawn from the
center of the drive through the center of the wrench opening. Torque adaptors shall conform to Figure 10 and Table 10.

3.11 Workmanship

All items covered herein shall be free from fins, burrs, external sharp or rough edges, corners, or surfaces and other
defects which may impair their serviceability or durability. The inside edges of the sockets, box wrenches, and torque
adaptors shall be chamfered.

3.11.1 Foreign Object Damage

It is important to avoid damage to aircraft due to foreign objects. Rips, tears, broaching slugs, burrs, slivers, plating peel
and/or any material which could be removed during gaging, load testing, or normal use and/or any indications of rust shall
be unacceptable.

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SAE AS954G Page 12 of 24

4. NOTES

4.1 Revision Indicator

A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions,
not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document
title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in
original publications, nor in documents that contain editorial changes only.

PREPARED BY SAE SUBCOMMITTEE EG-1B, HAND TOOLS OF

COMMITTEE EG-1, AEROSPACE PROPULSION SYSTEMS SUPPORT EQUIPMENT

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SAE AS954G Page 13 of 24

FIGURE 3 - TYPE I, CLASS I SOCKET STYLE A & B

TABLE 3 - TYPE I, CLASS 1 SOCKETS - 1/4 SQUARE DRIVE

STYLE A STYLE B
NOMINAL DIA. DIA. DEPTH TORQUE REQUIREMENTS
REGULAR LENGTH LONG LENGTH
WRENCH A B D
OPENING MAX. MAX. MIN. C E C E CYCLIC LOAD PROOF LOAD
MIN. MAX. MIN. MIN. (IN - LBS) (IN - LBS)
3/16 0.315 0.440 0.175 0.175 1.270 0.175 1.930 140 200
7/32 0.343 0.440 0.190 0.190 1.270 0.190 1.930 150 225
1/4 0.380 0.440 0.205 0.205 1.270 0.205 1.930 210 300
9/32 0.430 0.440 0.215 0.215 1.270 0.215 1.930 260 375
5/16 0.470 0.470 0.250 ---- 1.270 ---- 1.930 310 450
11/32 0.500 0.500 0.265 ---- 1.270 ---- 1.930 360 525
3/8 0.550 0.550 0.265 ---- 1.270 ---- 1.930 420 600
7/16 0.635 0.635 0.345 ---- 1.270 ---- 1.930 420 600
1/2 0.687 0.687 0.350 ---- 1.270 ---- 1.930 420 600
9/16 0.750 0.750 0.355 ---- 1.270 ---- 1.930 420 600

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SAE AS954G Page 14 of 24

FIGURE 4 - TYPE I, CLASS I SOCKET STYLE A & B

TABLE 4 - TYPE I, CLASS 1 SOCKETS - 3/8 SQUARE DRIVE

STYLE A STYLE B
NOMINAL DIA. DIA. DEPTH REGULAR LENGTH LONG LENGTH TORQUE REQUIREMENTS
WRENCH A B D
OPENING MAX. MAX. MIN.
C E C E CYCLIC LOAD PROOF LOAD
MIN. MAX. MIN. MIN. (IN - LBS) (IN - LBS)
1/4 0.400 0.690 0.205 0.205 1.270 0.205 1.930 210 300
9/32 0.435 0.690 0.215 0.215 1.270 0.215 1.930 260 375
5/16 0.470 0.690 0.250 0.265 1.270 0.265 1.930 310 450
11/32 0.499 0.690 0.265 0.265 1.270 0.265 1.930 470 675
3/8 0.550 0.690 0.265 0.265 1.520 0.265 1.930 630 900
7/16 0.660 0.690 0.345 0.345 1.520 0.345 1.930 870 1250
1/2 0.730 0.730 0.350 ---- 1.780 ---- 1.930 1680 2400
9/16 0.812 0.812 0.355 ---- 1.780 ---- 1.930 1750 2500
5/8 0.880 0.880 0.460 ---- 1.780 ---- 2.000 1750 2500
11/16 0.960 0.960 0.500 ---- 1.780 ---- 2.125 1750 2500
3/4 1.055 1.055 0.590 ---- 1.780 ---- 2.125 1750 2500
25/32 1.070 1.070 0.620 ---- 1.780 ---- 2.125 1750 2500
13/16 1.130 1.130 0.650 ---- 1.780 ---- 2.180 1750 2500
7/8 1.195 1.195 0.700 ---- 1.780 ---- 2.180 1750 2500
15/16 1.250 1.250 0.720 ---- 1.780 ---- 2.250 1750 2500
1 1.312 1.312 0.730 ---- 1.780 ---- 2.250 1750 2500

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SAE AS954G Page 15 of 24

FIGURE 5 - TYPE I, CLASS I SOCKET STYLE A & B

TABLE 5 - TYPE 1, CLASS 1 SOCKETS 1/2” SQUARE DRIVE

STYLE A STYLE B
TORQUE REQUIREMENTS
NOMINAL DIA. DIA. DEPTH REGULAR LENGTH LONG LENGTH
WRENCH A B D CYCLIC PROOF
OPENING MAX. MAX. MIN. C E C E
LOAD LOAD
MIN. MAX. MIN. MIN.
(IN - LBS) (IN - LBS)
3/8 0.580 0.880 0.265 0.265 1.780 0.265 2.930 840 1200
7/16 0.680 0.940 0.345 0.345 1.780 0.345 2.930 1190 1700
1/2 0.740 0.940 0.350 0.350 1.780 0.350 2.930 1680 2400
9/16 0.818 0.940 0.355 0.355 1.780 0.355 2.930 2520 3600
5/8 0.892 0.940 0.460 0.460 1.780 0.460 2.930 2800 4000
11/16 0.960 0.960 0.500 ---- 1.780 ---- 2.930 3850 5500
3/4 1.055 1.055 0.590 ---- 1.780 ---- 2.930 4200 6000
25/32 1.070 1.070 0.620 ---- 1.780 ---- 2.930 4200 6000
13/16 1.130 1.130 0.650 ---- 1.780 ---- 2.930 4200 6000
7/8 1.200 1.200 0.700 ---- 1.850 ---- 2.930 4200 6000
15/16 1.300 1.300 0.720 ---- 1.900 ---- 2.930 4200 6000
1 1.370 1.370 0.730 ---- 1.950 ---- 2.930 4200 6000
1-1/16 1.440 1.440 0.750 ---- 1.970 ---- 2.930 4200 6000
1-1/8 1.510 1.510 0.780 ---- 2.000 ---- 2.930 4200 6000
1-3/16 1.550 1.550 0.790 ---- 2.030 ---- 2.930 4200 6000
1-1/4 1.580 1.580 0.810 ---- 2.050 ---- 2.930 4200 6000
1-5/16 1.650 1.650 0.840 ---- 2.070 ---- 2.930 4200 6000

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SAE AS954G Page 16 of 24

FIGURE 6 - TYPE I, CLASS I SOCKET STYLE A

TABLE 6 - TYPE I, CLASS 1 SOCKETS - 3/4 SQUARE DRIVE

STYLE A
TORQUE REQUIREMENTS
NOMINAL DIA. DIA. DEPTH REGULAR LENGTH
WRENCH A B D
CYCLIC PROOF
OPENING MAX. MAX. MIN. C E
LOAD LOAD
MIN. MAX.
(IN - LBS) (IN - LBS)
3/4 1.200 1.500 0.590 0.737 2.300 7350 10500
13/16 1.295 1.500 0.650 0.813 2.300 7700 11000
7/8 1.340 1.500 0.700 0.875 2.300 10500 15000
15/16 1.420 1.500 0.720 0.900 2.300 11900 17000
1 1.510 1.575 0.730 0.938 2.300 12600 18000
1-1/16 1.575 1.575 0.750 ---- 2.300 12600 18000
1-1/8 1.635 1.635 0.780 ---- 2.350 12600 18000
1-3/16 1.700 1.700 0.790 ---- 2.350 12600 18000
1-1/4 1.825 1.825 0.810 ---- 2.400 12600 18000
1-5/16 1.920 1.920 0.840 ---- 2.700 12600 18000
1- 3/8 1.980 1.980 0.900 ---- 2.700 12600 18000
1-7/16 2.075 2.075 0.950 ---- 2.700 12600 18000
1-1/2 2.135 2.135 1.000 ---- 2.700 12600 18000
1-9/16 2.200 2.200 1.050 ---- 2.700 12600 18000
1-5/8 2.270 2.270 1.100 ---- 2.700 12600 18000
1-11/16 2.400 2.400 1.150 ---- 3.200 12600 18000
1-3/4 2.510 2.510 1.200 ---- 3.200 12600 18000

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SAE AS954G Page 17 of 24

Refer to Table 2 for Bolt Clearance Hole Diameter

FIGURE 7 - TYPE I, CLASS 2 UNIVERSAL SOCKETS

TABLE 7 - TYPE 1, CLASS 2 UNIVERSAL SOCKETS - 1/4 SQUARE DRIVE

DEPTH BOLT CYCLIC PROOF

Drive
Nut End OPENING Overall CLEARANCE TORQUE TORQUE
End
DIA LENGTH NUT END Length LENGTH LOAD LOAD
DIA
A C D E H (IN - LBS) (IN - LBS)
Nominal MAX.
B MIN. MIN. MAX. MIN. MIN. MIN.
Wrench MAX.
Opening
1/4 0.385 0.515 0.205 0.205 1.312 0.330 210 300
5/16 0.470 0.515 0.250 0.250 1.437 0.408 310 450
3/8 0.540 0.540 0.265 0.265 1.500 0.437 350 500
7/16 0.625 0.540 0.345 0.345 1.625 0.545 350 500
1/2 0.687 0.540 0.350 0.350 1.688 0.550 350 500

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SAE AS954G Page 18 of 24

Refer to Table 2 for Bolt Clearance Hole Diameter

FIGURE 8 - TYPE I, CLASS 2 UNIVERSAL SOCKETS

TABLE 8 - TYPE 1, CLASS 2 UNIVERSAL SOCKETS - 3/8 SQUARE DRIVE

Drive DEPTH BOLT CYCLIC PROOF

Nut End End OPENING Overall CLEARANCE TORQUE TORQUE
Nominal DIA DIA LENGTH NUT END Length LENGTH LOAD LOAD
Wrench A B C D E H (IN - LBS) (IN - LBS)
Opening MAX. MAX. MIN. MIN. MAX. MIN. MIN. MIN.
3/8 0.550 0.750 0.265 0.265 2.000 0.437 630 900
7/16 0.660 0.750 0.345 0.345 2.125 0.545 700 1000
1/2 0.730 0.750 0.350 0.350 2.187 0.550 700 1000
9/16 0.812 0.785 0.355 0.355 2.250 0.555 700 1000
5/8 0.880 0.785 0.460 0.460 2.250 0.660 700 1000
11/16 0.960 0.785 0.500 0.500 2.250 0.720 700 1000
3/4 1.055 0.785 0.590 0.590 2.312 0.810 700 1000

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SAE AS954G Page 19 of 24

FIGURE 9 - TYPE II BOX WRENCH

TABLE 9 - TYPE II BOX WRENCH

TYPE II TORQUE REQUIREMENTS

TYPE II TYPE II
CLASS 1,2, 3 CLASS 4 CLASS 1 & 4 CLASS 2 & 3

NOMINAL CYCLIC PROOF CYCLIC PROOF

WRENCH A B A B LOAD LOAD LOAD LOAD
OPENING MAX. MAX. MAX. MAX. (IN LB) (IN LB) (IN LB) (IN LB)
3/16 0.345 0.230 0.345 0.230 110 165 110 165
7/32 0.375 0.250 0.375 0.250 120 180 110 165
1/4 0.425 0.250 0.435 0.250 150 220 150 220
9/32 0.445 0.250 0.460 0.250 170 250 170 248
5/16 0.495 0.287 0.560 0.287 190 275 190 275
11/32 0.535 0.300 0.590 0.300 210 300 190 275
3/8 0.578 0.327 0.615 0.327 420 605 420 605
7/16 0.660 0.349 0.710 0.349 520 750 500 715
1/2 0.750 0.386 0.802 0.386 840 1200 710 1020
9/16 0.830 0.428 0.895 0.406 1150 1650 1050 1500
5/8 0.920 0.478 0.986 0.478 1540 2200 1540 2200
11/16 1.010 0.498 1.060 0.498 1840 2640 1840 2640
3/4 1.090 0.538 1.130 0.538 2100 3000 2000 2860
25/32 1.135 0.550 1.180 0.550 2200 3150 2160 3080
13/16 1.180 0.562 1.230 0.562 2310 3300 2310 3300
7/8 1.270 0.594 1.340 0.594 2590 3700 2540 3630
15/16 1.360 0.615 1.420 0.615 3220 4600 3160 4510
1 1.450 0.630 1.530 0.640 3850 5500 3770 5390
1-1/16 1.530 0.660 1.640 0.720 4200 6000 4160 5940
1-1/8 1.610 0.690 1.720 0.780 4620 6600 4540 6490
1-3/16 1.690 0.720 1.790 0.800 5110 7300 4540 6490
1-1/4 1.780 0.750 1.900 0.840 5600 8000 ---- ----
1-5/16 1.860 0.780 ---- ---- 6300 9000 ---- ----
1-3/8 1.940 0.810 ---- ---- 6650 9500 ---- ----
1-7/16 2.020 0.840 ---- ---- 6820 9750 ---- ----
1-1/2 2.110 0.870 ---- ---- 8400 12000 ---- ----

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SAE AS954G Page 20 of 24

FIGURE 10 - TYPE III, TORQUE ADAPTER

TABLE 10 - TYPE III, TORQUE ADAPTOR

NOMINAL NOMINAL
CENTER
WRENCH SQUARE TORQUE REQUIREMENTS
A B LENGTH
OPENING DRIVE MAX. MAX. CYCLIC LOAD PROOF LOAD
L +/-.040
W S (IN-LB) (IN-LB)
7/32 3/8 0.375 0.250 2.000 110 165
1/4 3/8 0.425 0.250 2.000 150 220
9/32 3/8 0.445 0.250 2.000 170 248
5/16 3/8 0.495 0.287 2.000 190 275
3/8 3/8 0.578 0.327 2.000 420 605
7/16 3/8 0.660 0.349 2.000 500 715
1/2 3/8 0.750 0.386 2.000 710 1020
9/16 3/8 0.830 0.428 2.000 1050 1500
5/8 3/8 0.920 0.478 2.000 1400 2000
11/16 3/8 1.010 0.498 2.000 1400 2000
3/4 3/8 1.090 0.538 2.000 1400 2000
9/16 1/2 0.830 0.428 3.000 1050 1500
5/8 1/2 0.920 0.478 3.000 1540 2200
11/16 1/2 1.010 0.498 3.000 1840 2640
3/4 1/2 1.090 0.538 3.000 2000 2860
13/16 1/2 1.180 0.562 3.000 2310 3300
7/8 1/2 1.270 0.594 3.000 2540 3630

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SAE AS954G Page 21 of 24

FIGURE 11 - TYPE II, CLASS 1 ANGLED END BOX WRENCH

TABLE 11 - TYPE II, CLASS 1 ANGLED END BOX WRENCH

WRENCH OPENING STYLE A STYLE B

REGULAR LENGTH LONG LENGTH
SMALL END LARGE END L L
A B
MIN. MAX. MIN. MAX.
7/32 1/4 ---- ---- 7.60 8.10
1/4 5/16 6.75 7.25 7.75 8.25
5/16 3/8 7.30 8.05 8.50 9.00
3/8 7/16 7.50 8.25 9.50 10.00
7/16 1/2 7.80 8.55 10.25 10.75
1/2 9/16 8.10 9.10 11.25 11.75
9/16 5/8 8.30 10.00 12.25 12.75
5/8 11/16 10.25 10.75 12.50 13.00
11/16 3/4 11.00 11.50 14.00 14.50
11/16 13/16 11.75 12.25 15.00 15.50
3/4 7/8 13.00 13.50 15.50 16.00
25/32 7/8 13.25 13.75 15.75 16.25
13/16 7/8 13.50 14.00 ---- ----
7/8 15/16 14.50 15.00 ---- ----
15/16 1 15.20 15.75 ---- ----
1-1/16 1-1/4 18.00 18.50 ---- ----
1-1/4 1-5/16 19.00 19.50 ---- ----
1-1/4 1-3/8 20.00 20.50 ---- ----
1-1/4 1-7/16 20.75 21.25 ---- ----
1-7/16 1-1/2 21.75 22.25 ---- ----

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SAE AS954G Page 22 of 24

FIGURE 12 - TYPE II, CLASS 2 MODIFIED OFFSET BOX WRENCH

TABLE 12 - TYPE II, CLASS 2, MODIFIED OFFSET BOX WRENCH

WRENCH OPENING STYLE A STYLE B

REGULAR LENGTH Short LENGTH
SMALL LARGE
L L
END END C H D J
A B NOM. MIN. NOM. MIN. MIN. MAX. MIN. MAX.
1/4 5/16 0.500 0.22 0.625 0.28 ---- ---- 4.00 4.50
5/16 3/8 0.625 0.28 0.750 0.31 ---- ---- 4.25 4.75
3/8 7/16 0.750 0.31 0.875 0.33 7.25 7.75 4.50 5.00
7/16 1/2 0.875 0.33 1.000 0.39 8.00 8.50 5.00 5.50
1/2 9/16 1.000 0.39 1.125 0.45 8.50 9.00 5.25 5.75

9/16 5/8 1.125 0.45 1.250 0.50 9.00 9.50 5.50 6.00
5/8 11/16 1.250 0.50 1.375 0.56 9.60 10.10 ---- ----
5/8 3/4 1.250 0.50 1.500 0.62 10.00 10.50 6.00 6.50
11/16 3/4 1.375 0.56 1.500 0.62 10.30 10.80 ---- ----
11/16 13/16 1.375 0.56 1.625 0.68 10.50 11.00 6.25 6.75

3/4 13/16 1.500 0.62 1.625 0.68 11.05 12.50 ---- ----
13/16 7/8 1.625 0.68 1.750 0.72 11.75 12.75 ---- ----
7/8 15/16 1.750 0.72 1.875 0.76 12.75 13.25 ---- ----
15/16 1 1.875 0.76 2.000 0.82 13.25 13.75 ---- ----

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SAE AS954G Page 23 of 24

FIGURE 13 - TYPE II, CLASS 3 DEEP OFFSET BOX WRENCH

TABLE 13 - TYPE II, CLASS 3, DEEP OFFSET BOX WRENCH

WRENCH OPENING STYLE A

STYLE B
REGULAR
SHORT LENGTH
SMALL LARGE LENGTH
L
END END C H D J L
A B NOM. MIN. NOM. MIN. MIN. MAX. MIN. MAX.
1/4 9/32 0.500 0.36 0.562 0.42 ---- ---- 3.50 4.00
1/4 5/16 0.500 0.36 0.625 0.44 6.25 6.75 3.90 4.40
5/16 3/8 0.625 0.44 0.750 0.51 6.75 7.25 4.25 4.75
3/8 7/16 0.750 0.51 0.875 0.61 7.00 7.65 4.65 5.20
7/16 1/2 0.875 0.61 1.000 0.70 7.75 8.25 5.10 5.60

1/2 9/16 1.000 0.70 1.125 0.80 8.35 8.90 5.45 6.00
9/16 5/8 1.125 0.80 1.250 0.90 8.90 9.50 5.75 6.50
5/8 11/16 1.250 0.90 1.375 1.00 9.50 10.10 6.25 6.75
5/8 3/4 1.250 0.90 1.500 1.10 10.00 10.50 6.40 6.90
11/16 13/16 1.375 1.00 1.625 1.18 10.50 11.00 6.75 7.25

3/4 7/8 1.500 1.10 1.625 1.18 10.70 11.60 ---- ----

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SAE AS954G Page 24 of 24

FIGURE 14 - TYPE II, CLASS 4 COMBINATION BOX AND OPEN END WRENCH
(DIMENSIONS IN INCHES)

TABLE 14 - TYPE II, CLASS 4 COMBINATION BOX AND OPEN END WRENCH

STYLE A
STYLE B
WRENCH REGULAR
SHORT LENGTH
OPENING LENGTH
L
A L
NOMINAL MIN. MAX. MIN. MAX.
1/4 4.45 5.15 3.15 4.10
9/32 4.60 5.20 3.30 4.15
5/16 5.15 6.35 4.15 4.90
11/32 5.50 6.40 4.40 5.05
3/8 5.80 6.85 4.60 5.30
7/16 6.40 7.50 5.00 6.00
1/2 7.10 8.10 5.25 6.15
9/16 7.90 8.80 5.75 6.50
5/8 8.35 9.55 6.10 7.00
11/16 8.80 10.30 6.60 7.55
3/4 9.60 11.10 6.95 8.20
13/16 10.20 11.90 7.25 8.25
7/8 11.15 12.60 7.50 8.30
15/16 11.95 13.35 7.75 8.40
1 13.00 14.10 8.00 8.50
1-1/16 14.00 15.00 8.25 8.75
1-1/8 14.90 16.35 8.50 9.00
1-3/16 15.50 17.40 9.00 9.50
1-1/4 16.00 17.80 9.50 10.00

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