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MIL-STD-100E
INTERIM NOTICE l(AR)
30 MARCH 1992
MILITARY STANDARD

ENGINEERING DRAWING PRACTICES

TO ALL HOLDERS OF MIL-STD-100E:

1. Make the following pen and ink changes:
a. Page vi, paragraph 3.36. Change title to “Find number or item number”.
b. Page vi, paragraph 3.53. Change “(HCIs)” to “(HCI)”.
c. Page vi, paragraph 3.54 Change “(HCPs)” to “(HCP)”.
d. Page xvi, paragraph 704.11. Change title to “Authentication, parts, data. and index list”.
e. Page xvii, Appendix A. paragraph 40.3.2.1. Change “signatures” to “signature”.
f. Page xx, paragraph 400-1. Change title to “Example of CAGE Code, drawing no.. design
activity relationship as originally specified”.
g. Page xx, paragraph 400-2. Change title to “Example of drawing notation when design
responsibility is transferred”.
h. Page xxi, C-1. Change the title to “Dimensioning and tolerancing matrix”.
i. Page xxi, C-1. Change page number to “C-2/3”
j. Page xxii. Change Table “500-I” to “I”.
k. Page 7. Change the title of “ANSI Y 10.20” to “Mathematical Signs and Symbols for Use in
Physical Sciences and Technology (including ANSI Y10.20a)”.
l. Page 8, Delete listing of “ANSI Y14.17”.
m Page 15, paragraph 3.4, second line. Change “recoganized” to “recognized”.
n. Page 16, paragraph 3.10, first line. Changc “Bulk materials” to “Bulk items” in two places.
o. Page 17, paragraph 3.10. Delete all five lines from “In addition... “to”... bulk quantities”.
p. Page 19, paragraph 3.24, third line. Change first “and” to “or”.
q. Page 20, paragraph 3.33, first line. Change “either an” to “such as”.
r. Page 31, paragraph 6.2.2, first line. Change Standard” to “standard”.
s. Page 31, paragraph 6.2.2, second line. Change “statements of work” to “Contract Data
Requirements
. Lists (CDRLs)”.

AMSC N/A DRPR

DISTRIBUTION STATEMENT A. Approved for public release; Distribution is unlimited.
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t. Page 200-1. paragraph 202.1. fifth line. Change “part number” to “PIN”.
u. Page 200-3.” paragraph 204.1. Arrangement drawing. Delete “(See Note 3)”. - .
V. Page 200-5.” NOTE l0. Change “101.15.3” to “101.15.2” and” 101.15.4” to “101.15.3”.

x. Page 400-6. paragraph 406.9. third line. Change “part number(s)” to “PIN(s)”.

z. Page 500-3.” paragraph 502.3. first line. Change title to “Superseded drawings”.
aa. Page 600-5. ” paragraph 602.7. fourth line. Change “CAGE code” to “CAGE Code”.
2. THE FOLLOWING PAGES OF MIL.-STD-100E HAVE BEEN REVISED AND SUPERSEDE
THE PAGES LIST LISTED:

21 30 September 1991 21 . 30 March 1992

22 30 September 1991 21 REPRINTED WITHOUT CHANGE
23 30 September 1991 23 30 March 1992
24 30 September 1991 24 30 March 1992
25 30 September 1991 25 30 March 1992
26 30 September 1991 26 30 March 1992
100-5 30 September 1991 100-5 30 March 1992
100-6 30 September 1991 100-6 30 March 1992
100-7 30 September 1991 100-7 30 March 1992
100-8 30 September 1991 100-8 30 March 1992
100-9 30 September 1991 100-9 30 March 1992
100-10 30 September 1991 100-10 30 March 1992
100-11 30 September 1991 100-11 30 March 1992
100-12 30 September 1991 100-12 30 March 1992
500-2 30 September 1991 500-1 30 March 1992
500-2 30 September 1991 500-2 30 March 1992
600-1 30 September 1991 600-1 REPRINTED WITHOUT CHANGE
600-2 30 September 1991 600-2 30 March 1992
700-9 30 September 1991 700-9 REPRINTED WITHOUT CHANGE
700-10 30 September 1991 700-10 30 March 1992
700-11 30 September 1991 700-11 REPRINTED WITHOUT CHANGE
700-12 30 September 1991 700-12 30 March 1992
B-5 30 September 1991 B-5 30 March 1992
B-6 30 September 1991 B-6 REPRINTED WITHOUT CHANGE
B-7 30 September 1991 B-7 REPRINTED WITHOUT CHANGE
B-8 30 September 1991 B8 30 March 1992
3. RETAIN THIS NOTICE AND INSERT BEFORE TABLE OF CONTENTS.
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MIL-STD- 100E

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4. Holders of MIL-STD-100E will verify that page changes indicated above have been entered.
‘Ibis notice will be retained as a check sheet. This issuance, together with appended pages, is a
separate publication. Each notice is to be retained by stocking points until the Military Standard is
completely revised or cancelled.
5. Vertical lines are used in this Notice to denote changes (additions, modifications, corrections,
deletions) from the basic standard. This was done as a convenience only and the Government
assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are
cautioned to evaluate the requirements of this document based on the entire content irrespective of
the marginal notations and relationship to the basic standard.

Custodian: Preparing activity:

Army - AR Army - AR
(Project DRPR-A326)
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MIL-STD-100E

INTERIM NOTICE 1

3.36 Find number or item number. A reference number assigned to an item in lieu of
the item’s identifying number on the field of the drawing and entered as a cross reference
to the item number of the parts lists where the item name and identification number are
given. Reference designations in accordance with ANSI/IEEE Std 200 may be used as
find numbers or item numbers (ASME Y14.34M).

3.37 Firmware. The combination of a hardware device and computer instructions-or “

computer data that reside as read–-only software on the hardware device. The software
cannot be readily modified under program control. (MIL-STD-480)

3.38 Government design activity (GDA). The Government agency rcsponsible. or

scheduled to become responsible, for configuration management and design requirements
of a configuration item.

3.39 Group. A collection of units. assemblies or subassemblies which is a sub-division of

a set or system. but which is not capable of performing a complete operational function.
(Examples: antenna group. indicator group).

3.40 Initial Graphics Exchange Specification (IGES) . A neutral file format for the
representation and transfer of product definition data among CAD/CAM systems and
application programs. (MIL-STD-1840).

3.41 Interchangeable item. One which possesses such functional and physical
characteristics as to be equivalent in performance to another item of similar or identical
purposes: and is capable of being exchanged for the other item without selection for fit or
performance, and without alteration of the items themselves or of adjoining items, except
for adjustment.

3.42 Interface characteristic. Those characteristics which at’feet the physical or functional
characteristics of co-functioning items. The characteristics are established to allow
equipment or systems to be compatible with equipment or systems under the control of.
different customers, contractors. or design activities. Changes to interface characteristics
shall be coordinated with all affected activities.

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3.43 Item. A non-specific term used to denote any unit or product including materials, parts,
assemblies. equipment, accessories and computer software.

3.44 Item identification. The combination of the part or identifying number and the original design
activity CAGE code. (NOTE: Not applicable to vendor item drawings. )

3.45 Manufacturer. An individual. company. corporation, firm or Government activity who:

a. controls the production of an item, or

b. produces an item from crude or fabricated materials, or

c. assembles materials or components. with or without modification. into more complex items.

3.46 Master drawing. A document that shows the dimensional limits or grid locations applicable to
any or all parts of a printed board (rigid or flexible), including the arrangement of conductive and
nonconductive patterns or elements, size, type. and location of holes; and any other in formation
necessary to describe the product to be fabricated (ANSI/IPC-T-50).

3.47 Matched parts. Matched parts are those parts, such as special application parts, which are
machine or electrically matched, or other-wise mated. and for which replacement as a matched set or
pair is essential.

3.48 Nationally recognized standard. A specification or standard issued with the intent to establish
common technical requirements. Such standards are developed by or for a Government activity or by
a non–Government organization (private sector association, organization, or technical society) which
conducts professional standardization activities (plans, develops, establishes, or publicly coordinates
standards, specifications, handbooks, or related documents) and is not organized for profit. (ASME
Y14.24M)

3.49 National Stock Number (NSN). A number assigned to each item of supply, that is purchased,
stocked or distributed within the Federal Government.

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3.50 Non-Government standard (or document). A standardization document developed by a private

sector association. organization or technical society which plans, develops, establishes or coordinates
standards. specifications. handbooks or related documents. Non-Government standards adopted by
the DoD are listed in the DODISS. (MIL-STD-962).
3.51 Non-part drawing. An engineering drawing that provides requirements. such as procedures or
instructions. applicable to an item, when it is not convenient to include this information on the
applicablc part drawing. Examples include test requirements drawing and logic diagram.

3.52 Nuclear effects. In this context, nuclear effects include the effects on assemblies, subassemblies
or parts due to nuclear-power sources, space radiation or nuclear-weapon-producred environments.

a. Functiionally required hardware (meaning hardware included in system design to satisfy any
requirement other than nuclear hardening) whose rcsponse to the specified nuclear environments
could cause degradation in system survivability unless additional provisions for hardness are included
in the itcm specification, design. manufacture. item selection process. provisioning. configuration
control, etc.

b. Functionality required hardware or softwarc that inherently provides protect** for the

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MIL-STD-100E

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3.54 Nuclear Hardness Critical Process (HCP). A Nuclear HCP is any fabrication, manufacturing.
assembly, installation, maintenance and repair, or other process or procedure which implement a
hardness design feature and satisfies system hardness requirements.

3.55 observable Critical Item (OCI). An OCI is any part or material specifically designed. selected
or qualified to meet specified observable requirements.

3.56 observable Critical Process (OCP). An OCP is any fabrication, manufacturing, assembly,
installation, maintenance and repair. or other process or procedure which implements an observable
design and satisfies observable system requirements.

3.57 Original. The current design activity’s full size reproducible drawing or digital data tile(s) on
which is kept the revision record recognized us official.

3.60 Part. One piece, or two or more pieces joined together, which are not normally subject to
disassembly without destruction or impairment of designed use. (Examplus: transistor, composition
resistor, screw, gear, transformer. milling cutter, bearing.) See 3.7.1.

3.61 Part or Identifying Number (PIN). The identifier assigned by the responsible design activity or
by the controlling nationally recognized standard which uniquely identifies (relative to that design
activity) a specific item. The PIN generally includes the controlling drawing or document number
and optional suffix. The PIN does not include the drawing revision identifier. drawing size. or CAGE
Code. The term “part or identifying number” replaces the terms “part number” and “bulk material
identification number”. (ASME Y14.24M and MIL-STD-96l)

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3.62 Procuring activity. A component of a Government agency having a significant acquisition

function and designated as such by the head of the agency. Unless agency regulations specify
otherwise, the term “procuring activity” shall be synonymous with “contracting activity.”

3.63 Product. Includes materials, parts, components, subassemblies, assemblies, and equipments.
The term product wherever used in this document shall also encompass a family of products. A
family of products is defined as all products of the same classification, design, construction, material,
type, etc., produced with the same production facilities, processes, and quality of material, under the
same management and quality controls, but having the acceptable variety of physical and functional
characteristics defined and specified in “the applicable engineering documentation.

3.64 Product definition data. Denotes the totality of data elements required to completely define a
product. Product definition data includes geometry, topology, relationships, tolerances, attributes
and features necessary to completely define a component part or an assembly of parts for the purpose
of design, analysis, manufacture, test and inspection. (MIL-D-28000).

3.65 Production master. A 1 to 1 scale pattern which is used to produce one or more printed boards
(rigid or flexible) within the accuracy specified on the Master Drawing (ANSI/IPC-T-50).

3.66 Qualification. The formal process by which a manufacturer’s product is examined for
compliance with the requirements of a source control drawing for the purpose of approving the
manufacturer as a source of supply. .

3.67 Qualitv assurance. A planned and systematic pattern of all actions necessary to provide
{ adequate confidence that management and technical planning and controls are adequate to:

a. Establish correct technical requirements for design and manufacturing.

b. Create products and services that conform to the established technical

requirements.

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MIL-STD-100E
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101.14.20 Abbreviations. Abbreviations shall be in accordance with MIL-STD-12.

101.15 Diagrams.
101.15.1 Electrical and electronics diagrams. Electrical and electronics diagrams and
intcrconnection diagrams shall be in accordance with ANSI Y14.15, Y14.15a and Y14.15b.
101.15.1.1 Logic circuit diagrams. Logic circuit diagrams shall be in accordance with ANSI/lEEE
Std 991.
101.15.2 Printed wiring d rawings. Printed wiring drawings shall be in accordance with the
requirements of MIL–STD-275. MIL–STD–2118 and ANSI/IPC–T–50. as applicable.
101.15.3 Printed board description in digital form. When printed board descriptions are in digital
form (dcfined either by metric or customary units) the description and form shall be in accordance
with ANSI/IPC–D-350 or MIL–D-28000.
101.16 Media for drawings and associated lists.
101.16.1 Materials.
101.16.1. I Plastic sheet or roll. Originals on plastic sheet shun be in accordance with L-P-5 19. type
I or II. class 2. Undimcnsioned drawings. printed wiring masters. and printed wiring production
masters shall be in accordance with MIL–D–8510, type II (per MIL–STD–275) or L–P–519, type I or
II, class 1.’
101.16 .1.2 Paper tracing. Tracing paper for dimensioned drawings shall be in accordance with
UU-P-501. Type as specified.
101.16 .1.3 Film. Diazotype. Copies on sensitized, diazotype film shall be in accordance with L-
F-340, Type and Class as specified.
101.16 .1.4 Parer. Diazotype. Copies on direct-positive, sensitized (dianzotype) paper shall be in
accordance with UU–P-22 1.

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101.16 .1.6 Digital data.

101.16.1.7 Associated lists . materials. Associated lists prepared from digital data need not meet the
requirements of 101.16.1.1 or 101. l6.1.2.
101.16.2 Digital product definition data.

101.16.2.2. File structure. When specified, data files shall conform to MIL-D-28000 and
MIL-STD-1840.

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101.17.2 Indication of scale. The scale or scales to which drawings are prepared shall be indicated
thereon by the fractional method in the drawing scale block. The scale to which the majority of views
and sections are drawn shall be entered as a fraction (1/1. 1/4. 2/1) after “SCALE*’ in the space
provided on each sheet of the drawing. The scale of each view or section drawn to other than the
predominate scale shall be entered directly below the title of the view or section, for example:
SECTION A-A
SCALE 2/1
101.17.2.1 Fractional method. The fractional method expresses, in the form of a common fraction,
the ratio of the size of the object as drawn to its full size. The following scales are preferred, but
other scales (enlarged or reduced) may be used it approved by the design or procuring activity:
full size - 1/1
Enlarged - 10/1. 4/1. 2/1
Reduced - 1/2. 1/4. 1/8. 1/10. 1/20. 1/30. 1/40. 1/50. 1/60, 1/100
101.17.3 Drawing not to scale. In the case of diagrams, isometic, perspective. cable assemblies.
tabulated and other drawings not prepared to any scale, the word “ NONE” shall be entered after
“SCALE” in the space provided on the drawing format. Drawings consisting predominantly of
textual content need not have an entry in the scale block. Individual dimensions or illustrations on
such drawings shall specify the applicable scale.
101.18 Drawing marking for item identification. Drawings shall specify marking requiremcnts for
items. including item identification, in assordance with Chapter 400 and MIL–STD–130.
101.18.1 Drawing requiremcnts for part identification marking. Dclineation of part identification
markings on an associationed drawing shall be consistent with the requirements of MIL–STD–130 and
shall be clear on such detail as method of application (for example stamp or stencil). and materials
(for example ink per A-A-208).
101.18.1.1 ldentification marking location and size. The location and size (if” ncccssary) of the
identification marking shall be specified on the depiction of the item if it must be controlled due to
functional or fit requirements or subscquent finish application. The location shall be identified by a
leader

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100-8

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101.21 Drawing notes. Drawing notes arc used to provide information required to clarify the
requirements for the item delineated. They may apply to a portion of the drawing or to the entire
drawing. providing additional treatment, finish, protection. or other considerations.
101.21.1 Languages style. Notes shall be short, concise statements. using the simplest words and
phrases for conveying the intended meaning. Notes shall not include contractual requirements such
as statements of costs, time and place of delivery, methods of payment, requirements for submission.
approval or distribution of data, reports or plans.
101.21.2 Commonly used words and phases. Certain words and phrases are frequently used on a
drawing. The following rules shall be applied:
a. Reference documents shall be cited as follows:
(1) “...per...”
(2) ....conforming to... ”
(3) “ ...as specified in...’”
(4) “... in accordancc with...”’ or “... IA W...”’
b. “Unless otherwise specified” shall be used to indicate the generally applied
requirements. The phrase shall always come at the beginning of the sentence. and, if possible. at the
beginning of the note. This phase shall be used only when it is possible to clarify its meaning by
providing a reference to another document, or requiremcnt on the drawing, that dearly specifies the
exception(s).
101.21.3 Use of “shall”, “will”. “should” and “may”.
a. “Shall” “Shall”, the emphatic form of the verb. shall be used whenever a requirement is
intended to express a provision that is contractually binding.
b. “Will’”. “Will” may be used to express a declaration of purpose on the part of the
Design Activity. It may be necessary to use “will” in cases when simple futurity is required’.
c. “Should” and “may”. “Should” and “may” are used when it is neccssary to express
nnn-mandatoty provisions.

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1 00-1()

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e. Reference to standardization documents shall be by basic identifier, excluding revision

letter, Preparing Activity suffix letters, “00” designation and existing amendments except where
identification of a specific issue is essential to drawing interpretation. Master Drawings prepared to
MIL-STD-275 shall include fabrication specification identifier, document date, and applicable
revision letter and amendment number. Reference to DoD adopted non-Government standards
shall be to the basic identifier, excluding revision level indicators or year of issue adopted, except
where identification of specific issue is essential to drawing interpretation, as in the case of: ANSI
Y14.5M, ANSI/IEEE Std 91 and ANSI/AWS A2.4. Reference to non-Government standards that
are not DoD-adopted shall include the year of the issue applicable. However, in the case of ANSI
Y14.5, refcrencc shall always include the year of issue, ANSI Y14.5M-(enter the date of the ANSI
Y14.5M, applicable to the drawing in question). See also 101.27.
f. Flagnote symbols, such as are placed around the note number
when the note is referenced in the field of the drawing. A flagnote need not be used when specific
direction is given to a drawing note such as “(SEE NOTE 3)”. The same flagnote symbol shall be
used throughout the drawing. Careful consideration should be given to the use of flagnotes on
intricate or cluttered drawings; flagnote symbols shall not conflict with or resemble other symbols
used on the drawing. Nonstandard symbols or annotations other than flagnotes shall be defined.
Examples. Drawing Notes:

PER MIL-R-55182.
3. DIMENSIONAL LIMITS AND SURFACE TEXTURE APPLY
.
WITHOUT PLATING .
PER WW-C-440, TYPE I, GRADE B, SIZE 1/2.

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MIL-STD-100E
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CHAPTER 500
MARKINGS ON ENGINEERING DRAWINGS

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500-2

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CHAPTER 600

INTERIM NOTICE l(AR)

REVISION OF ENGINEERING DRAWINGS

600-1

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600-2

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FIGURE 700-1. PL format generated from digital data.

700-9

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FIGURE 700-2. PL generated from digital data

700-10
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FIGURE 700-3. Manually prepared PL

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FIGURE 700-4. Manually prepared DL

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40.1.6 Location of security markings on associated lists. Security classification shall be at tahea top
and bottom of the list as illustrated in Figures B-4 and B-5.

FIGURE B-4. Location of security markings on associated lists.

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FIGURE B-5 Location of security marking on digital data generated

associated.

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40.1.7 Location of security markings on drawings in book-form. Security
markings shall be placed on pages containing classified information. Security
notes shall be placed above the title block. Security classification shall be
placed at top of pages. Place the following note on the title sheet. “TITLE
SHEET IS UNCLASSIFIED WHEN SEPARATED FROM SHEETS (List all
Classified Sheet No.).” See Figure B-6.

FIGURE B-6. Location of security markings on drawing in book-form.

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40.18 Regarding classification. Documents shall be regraded by either lining out or removing
classification and related notes. The current classification, except unclassified. shall be placed
adjacent to the previous classification. The reclassification action constitutes a change: therefore, an
applicable entry in the revision block in accordance with Chapter 600 is required. See Figure B-7.

FIGURE B-7. Regarding classification location.

B-8
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