ISO/DIS 11373-1

Aircraft -- Hand-or power-activated crimping tools and accessories

Aéronefs -- Outils de sertissage manuels ou mécaniques et accessoires

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD ISO/DIS 11373-1
ISO/TC 20/SC 1 Secretariat: SAC
Voting begins on Voting terminates on
2002-10-24 2003-03-24

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION

Aircraft — Hand-or power-activated crimping tools and
accessories —
Part 1:
General requirements
Aéronefs — Outils de sertissage manuels ou mécaniques et accessoires —
Partie 1: Exigences générales
ICS 49.060

In accordance with the provisions of Council Resolution 15/1993 this document is circulated

in the English language only.

Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est

distribué en version anglaise seulement.

To expedite distribution, this document is circulated as received from the committee

secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at

publication stage.

Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du

secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au

Secrétariat central de l'ISO au stade de publication.

THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO

AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.

IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT

INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH

REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
© International Organization for Standardization, 2002
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© ISO
ISO/DIS 11373-1
Contents

1 Scope......................................................................................................................................................1

2 Normative references...........................................................................................................................1

3 Requirements........................................................................................................................................2

3.1 Product standard..................................................................................................................................2

3.2 Qualification..........................................................................................................................................2

3.3 Materials.................................................................................................................................................2

3.4 Design and construction......................................................................................................................3

3.5 Performance..........................................................................................................................................4

3.6 Marking.................................................................................................................................................12

3.7 Workmanship......................................................................................................................................12

4 Verification...........................................................................................................................................12

4.1 Classification of inspection ...............................................................................................................12

4.2 Inspection conditions.........................................................................................................................12

4.3 Qualification inspection.....................................................................................................................12

4.4 Conformance inspection....................................................................................................................16

4.4.1 Requirement clause............................................................................................................................17

Requirement clause..................................................................................................................................................18

4.5 Visual and mechanical inspection ....................................................................................................19

4.6 Wired assemblies................................................................................................................................19

4.7 Test methods.......................................................................................................................................19

5 Packaging............................................................................................................................................26

6 Intended use........................................................................................................................................26

6.1 General.................................................................................................................................................26

6.2 Tool selection......................................................................................................................................26

6.3 Purchasing requirements...................................................................................................................26

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© ISO
ISO/DIS 11373-1
Foreword

ISO (the International Organisation for Standardisation) is a worldwide federation of national standards bodies (ISO

member bodies). The work of preparing International Standards is normally carried out through ISO technical

committees. Each member body interested in a subject for which a technical committee has been established has

the right to be represented on that committee. International organisations, governmental and non-governmental, in

liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical

Commission (IEC) on all matters of electrotechnical standardisation.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.

Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.

International Standard ISO 11373-1 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles

ISO 11373 is published in the following parts:
ISO 11373-1, Technical specification
ISO 11373-2, List of product standards
ISO 11373-3, Type 1 tools - Product standard
ISO 11373-4, Type 2 tools - Product standard
ISO 11373-5, Type 3 tools - Product standard
ISO 11373-6, Accessories - Product standard
Copyright notice

This ISO Document is a working draft or committee draft and is copyright protected by ISO. While the reproduction

of working drafts or committee drafts in any form for use by participants in the ISO standards development process

is permitted without prior permission from ISO, neither this document nor any extract from it may be reproduced,

stored or transmitted in any from for any other purpose without prior written permission from ISO.

Requests for permission to reproduce this document for the purpose of selling it should be addressed as shown

below or to ISO's member body in the country of requester:

ISO/TC 20/SC 1 Sub-Committee Secretariat:: H C Chen, CARIS, 7 Jingshun Road, Dongzhimenwai, P.O.

Box 1673, Beijing 100028, China, Tel: [phone], Fax: [phone], E-Mail: [e-mail]

Reproduction for sales purposes may be subject to royalty payments or a licensing agreement.

Violators may be prosecuted.
© International Organization for Standardization.
iii
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© ISO
ISO/DIS 11373-1
Introduction
This specification has been derived from MIL-DTL-22520G.

Throughout this International Standard, the minimum essential criteria are identified by the use of the key word

“shall”. Recommended criteria are identified by the use of the key word “should”, and while not mandatory are

considered to be of primary importance in providing serviceable, economical and practical connectors. Deviation

from the recommended criteria should occur only after careful consideration, extensive testing and thorough

service evaluation have shown alternative methods to be satisfactory.

Specific requirements of relevance to, and applicable only to, the military forces of a single nation e.g. USA, should

be ignored in the context of this International Standard.

Descriptors: Connectors, electrical, contacts, dies, end caps, ferrules, gauges, inspection, positioners, splices,

terminals, turret, cable, electrical
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DRAFT INTERNATIONAL STANDARD ISO/DIS 11373-1
Aircraft — Hand-or power-activated crimping tools and
accessories —
Part 1:
General requirements
1 Scope
1.1 Scope

This specification covers the general requirements for crimping tools, accessories and inspection gauges used for

connecting removable contacts (such as; signal, power, coaxial, shielded, thermocouple, and filter pin contacts)

coaxial connectors, shielded connectors, ferrules, terminals, end caps and splices to cable conductors for use in

electrical connectors, terminal junction systems, and other electrical or electronic components. It shall apply to civil

as well as military aircraft.
1.2 Classification
Crimping tools covered by this specification are of the following types:
- Type I - Tools that produce an indent termination ;
- Type II - Tools that produce a formed termination ;
- Type III - Tools that produce a compression termination.
2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this

International Standard. At the time of publication, the edition indicated was valid. All standards are subject to

revision, and parties to agreements based on this International Standard are encouraged to investigate the

possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain

registers of currently valid International Standards.

ISO 11373-2, Aircraft — Crimping tools and accessories, hand or power activated — Part 2 : List of product

standards

ISO/TR 224:1998, Aircraft — Declaration of design and performance for aircraft equipment — Standard form

QQ-W-343, Wire, electrical, copper (Uninsulated)

MIL-T-7928, Terminals, lug splices, conductor, crimp style, copper, General specification for

MIL-W-22759, Wire, electric, fluoropolymer-insulated, copper or copper alloy

MIL-W-81044, Wire, electric, crosslinked polyalkene, crosslinked alkane iImide polymer, or polyarlene insulated,

copper or copper alloy
___________________________________________________________

1) available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA

19111-5094.)
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© ISO
ISO/DIS 11373-1

ISO 2635, Aircraft - Conductors for general purpose aircraft electrical cables and aerospace applications -

Dimensions and characteristics.

MIL-S-81824, Splice, electric, permanent, crimp style, copper, insulated, environment resistant

MIL-W-16878, Wire, electrical, insulated, General specification for
MIL-STD-202, Test methods for electronic and electrical component parts
4)
ASTM-B16, Rod, brass, bar, and shapes for use in screw machines (Metric)
4)
ASTM-B133, Copper, rod, bar, and shapes (Metric)
4)

ASTM-B272, Copper flat products with finished (rolled or drawn) edges (flat wire and strip)

ASQC-Z1.4, Procedures, sampling and tables for inspection by attributes

SAE-AIR1351, Aerospace electrical & electronic wiring, devices and accessories, manufacturers' identification of

3 Requirements
3.1 Product standard

The individual item requirements shall be as specified herein and in accordance with the applicable product

standard (see ISO 11373-2). In the event of any conflict between the requirements of this specification and the

product standard, the latter shall govern.
3.2 Qualification

3.2.1 Tools furnished under this specification shall be products that are certified by the manufacturer as meeting

this specification and the associated product standard. Evidence of qualification shall be provided in the form of a

declaration of design and performance in the format specified in ISO/TR 224:1998.

3.2.1 Part numbers shall not be applied to a product, except for qualification test samples (see 4.3), until

qualification and acceptance testing has been completed and certified.
3.3 Materials
3.3.1 General

Materials shall be as specified herein. However, when a definite material is not specified, a material shall be used

which will enable the tools to meet the performance and interface requirements of this specification and the

applicable product standard. Acceptance or approval of any constituent material shall not be construed as a

guarantee of the acceptance of the finished product.
________________________________________________

2) available from the American Society of Mechanical Engineers, 345 East 47th Street, New York, NY 10017-2392.)

3) available from the American National Standards Institute, 11 West 42nd Street, New York, NY 10036.)

4) available from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, Pa.

19428-2950.)

5) available from the American Society For Quality Control P.O. Box 3005, 611 E. Wisconsin Avenue, Milwaukee,

Wisconsin 53201-4606).

6) available from the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096.)

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© ISO
ISO/DIS 11373-1
3.3.2 Finish

Aluminium parts shall be anodized in accordance with an anodizing process that meets the performance

requirements specified in clause 3.5 of this specification. All other metal parts shall be made of corrosion-resistant

material or protected to meet the performance requirements of this specification. Colour shall be as specified on the

applicable product standard. Cadmium plating shall not be used.
3.3.3 Dissimilar metals

When dissimilar metals are employed in intimate contact with each other, protection against electrolytic corrosion

shall be provided.
3.4 Design and construction
3.4.1 General

Tools and accessories shall be in accordance with the applicable product standard.

3.4.2 Crimping operation
3.4.2.1 Type I tools

When the tool is in the fully opened position, the contacts shall pass freely between the indenters, both before and

after being crimped. All indenters shall be designed to travel with equal and simultaneous movement. The motion

and dimensional configuration shall be specified in the applicable product standard. The tool design shall provide

for positive closed positioning for the indenters. The indenter closure selector shall have a positive detent at each

setting. The tool shall be designed such that they can meet specified closure with or without positioners or turrets

installed. All positioners and turrets shall provide positive location of cable barrels for crimping for specified

contacts.
3.4.2.2 Type II tools.

3.4.2.2.1 The crimping operation shall be accomplished by the closure of a set of dies with the specified

configuration (see 3.1). The movement of the opposing crimp dies shall be perpendicular or radial to the mating die

face, and the fully closed position shall be as specified on the applicable product standard.

3.4.2.2.2 Locator. When required (see 3.1), a locating device shall be incorporated on the crimping dies or

crimping tools for positioning the item to be crimped in the proper location prior to the initiation of the crimp cycle.

3.4.2.3 Type III tools

Operation of the tool shall be in accordance with the individual product standard.

3.4.3 Tool malfunction

3.4.3.1 All tools shall be provided with a return mechanism and a full cycling mechanism that shall not jam or

malfunction if operated with or without a contact or connector, and with or without a positioner, turret, or die. Any

tool operation within the scope of this specification shall neither create a jammed mechanism nor impair the

function of the tool. Metal particles from operation of the tool or the crimping operation shall not accumulate within

the tool where they would contribute to or cause any malfunction of the tool mechanism.

3.4.3.2 Full cycle mechanism. The full cycle mechanism shall be tamper-proof so that it cannot be disengaged prior

to or during the crimp cycle.
3.4.4 Removal of crimped parts

The crimped assembly shall be removed from the tool without impediment upon completion of the crimping

operation
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ISO/DIS 11373-1
3.4.5 Calibration

Tool calibration adjustments shall be accessible only when the tool is disassembled. These adjustments shall be

made only by the manufacturer or by an approved calibration laboratory.
3.4.6 Gauges

3.4.6.1 Inspection gauges. The required "GO" and 'NO-GO' gauges shall be made available by the tool

manufacturer for performing the qualification and conformance inspection gauging tests specified herein. These

gauges shall conform to the gauging limits specified on the applicable tool product standard.

3.4.6.2 In-service gauges. The gauges to be supplied for maintenance use shall be in accordance with the gauge

product standard specified on the applicable tool product standard.
3.5 Performance
3.5.1 General
Tools shall meet the test requirements of this specification.

a) Type I tools. Type I tools shall crimp cable barrels and other electrical connector contacts to cables as specified

in the applicable component specification.

b) Type II tools. Type II tools shall crimp terminal splices, end caps, shielded or coaxial contacts, coaxial

connectors, ferrules and other connecting devices to wires or cables as specified in the applicable product standard.

c) Type III tools. Type III tools shall meet the requirements as specified in the applicable product standard.

3.5.2 Gauging

Tools shall meet the gauging limits specified in the applicable product standard when tested in accordance with

4.7.1.
3.5.3 Humidity (steady state)

There shall be no damage to basic tools, turrets, positioners, or dies to impair operation when tested in accordance

with 4.7.2.
3.5.4 Handle indenter and die return operation (full cycle)

The return mechanism shall compel the handles, indenters, and dies to automatically return to the fully open

position when tested in accordance with 4.7.3. This requirement shall apply regardless of the plane or position of

the tool, with or without a wired assembly located in the tool.
3.5.5 Ratcheting mechanism
3.5.5.1 Type I tools

The ratchet shall hold above the 'NO-GO' limit of the applicable product standard when tested in accordance with

4.7.4.1.
3.5.5.2 Type II tools

When tested in accordance with 4.7.4.2, the opposing die faces shall meet and the dies shall fully close before the

ratchet releases. The force required to release the ratchet mechanism shall be not less than 133,45 N and shall be

not more than 222,4 N.
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ISO/DIS 11373-1
3.5.5.3 Type III tools

Type III tool operation shall be in accordance with the applicable product standard.

3.5.6 High compression force

Type I and type II tools shall conform to the gauging requirement of 3.5.2, after being subjected to a 667,2 N

compression force in accordance with 4.7.5. High compression force, if required, for type III shall be in accordance

with the applicable product standard.
3.5.7 Compression force

The force required to complete the cycle of the tool shall not exceed the value specified on the applicable product

standard when tested in accordance with 4.7.6.
3.5.8 Deformation of crimped connection
3.5.8.1 Type I tools

The out-of-roundness of the crimped cable barrel shall be not greater than the specified maximum diameter of the

barrel by more than 0,05 mm for sizes smaller than size 20 or by more than 0,15 mm for size 20 and larger cable

barrels when measured as specified in 4.7.7. 1.
3.5.8.2 Type II tools

The crimped connection shall be symmetrical to ensure that the component shall function as required when

examined as specified in 4.7.7.2.
3.5.8.3 Type III tools

Deformation requirements shall be in accordance with applicable product standard, if applicable.

3.5.9 Cracking of crimped connection

There shall not be any cracks penetrating the plating (or insulation, if applicable) and exposing the basis metal as a

result of crimping, when tested as specified in 4.7.8.
3.5.10 Concentricity (straightness)
3.5.10.1 Type I tools

The position of the outside diameter of the contact after being crimped shall be not greater than 0,305 mm (relative

to measured contact diameter) of the OD as manufactured for sizes 12 and 16 contacts and 0,0279 mm (relative to

measured contact diameter) for size 20 and smaller contacts, when measured as specified in 4.7.9.1. This includes

the 0,13 mm permitted during contact manufacturing. This test shall be waived for stamped and formed contacts or

contacts whose configuration does not allow testing with measuring equipment (see figure 3).

3.5.10.2 Type II tools

The crimped cable assembly shall be straight to ensure that the component shall function as required when

examined as specified in 4.7.9.2.
3.5.10.3 Typed III tools

Requirements for straightness shall be in accordance with the applicable product standard.

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3.5.11 Voltage drop
3.5.11.1 Type I tools

The voltage drop across the crimped joint shall be not greater than the value specified in table 1 when tested as

specified in 4.7.10.1.
3.5.11.2 Type II tools

The voltage drop shall meet the requirements of the specification to which the crimped item is qualified. If the

component specification does not specify the voltage drop, the values specified in table m shall apply when tested

as specified in 4.7.10.2.
3.5.11.3 Type III tools
Voltage drop shall be in accordance with the applicable product standard.
3.5.12 Tensile strength

When tested in accordance with 4.7.11, the cable shall not break at, or pull out of, the crimped joint. The

connection shall not break or become distorted to the extent that it is unfit for further use before the minimum

tensile strength is reached as specified in tables 2 and 3.
3.5.13 Dielectric strength for Type II tools

When applicable (see 3.1), the insulation on terminals, splices, ferrules and end caps shall show no evidence of

damage, arcing, or breakdown, when tested in accordance with 4.7.12.
3.5.14 Low temperature crimp

There shall be no binding of the tool handles, indenters, dies, or crimped wired assemblies when tested as

specified in 4.7.13. The wired assemblies shall then meet the requirements of 3.5.11 and 3.5.12.

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© ISO
ISO/DIS 11373-1
3.5.15 Shock

Crimping tools, turrets. positioners, or dies shall not be damaged as a result of the shock test of 4.7.14.

Table 1 — Voltage drop for type I tools (AWG wire only)
Maximum voltage drop
Cable size range test current
Silver-or tin-plated copper Nickel-plated copper cable
cable
(A)
(mV)
(mV)
000 225,0 6,0 N/A
00 185,0 8,0 N/A
0 150,0 3,0 N/A
2 N/A N/A N/A
4 80,0 4,0 N/A
6 60,0 4,5 N/A
8 46,0 5,0 N/A
10 33,0 4,0 N/A
12 23,0 3,0 14,0
14 17,0 3,5 13,5
16 13,0 3,5 16,0
20 7,5 4,0 15,5
22 5,0 4,0 22,5
24 3,0 4,0 15,5
26 2,0 4,0 17,0
28 1,5 5,0 18,5
30 1,0 6,0 21,0
32 0,5 8,0 19,0
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ISO/DIS 11373-1
Table 1A — Voltage drop for type I tools (IWG wire only)
Maximum voltage drop
Cable size range test current
Silver-or tin-plated copper Nickel-plated copper cable
cable
(A) (mV)
(mV)
I10 33,0 4.0 TBD
I12
23,0 3.0 14.0
I14
17,0 3.5 13.5
I16
13,0 3.5 16.0
I20 7,5 4.0 15.5
I22 5,0 4.0 22.5
I24 3,0 4.0 15.5
I26 2,0 4.0 17.0
I28 1,5 5.0 18.5
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Table 2 — Tensile strength for Type I tools (AWG wire only)
Cable size Minimum tensile strength N
range
Silver-or tin-plated copper cable Nickel-plated copper cable
Initial Initial
After low temp. After low temp.
crimp crimp
0000 3 892 3 503 3 492 3 143
00 3 336 3 003 3 003 2 702
0 3 114 2 802 2 802 2 522
1 2 891 2 602 2 602 2 342
2 2 447 2 202 2 202 1 982
4 1 779 1 601 1 601 1 441
6 1 335 1 201 1 201 1 081
8 979 881 890 801
10 667 601 601 541
12 489 414 445 378
14 311 271 267 236
16 222 200 165 147
20 90 62 85 58
22 53 31 35,6 22,2
24 36 22 26,7 17,8
26 22 18 13,35 11,1
28 13 6,7 8,9 4,5
30 6,7 3,6 6,7 3,6
32 4,5 2,2 4,5 2,2
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ISO/DIS 11373-1
Table 2A — Tensile strength for Type I tools (IWG wire only)
Cable size Minimum tensile strength N
range
Silver-or tin-plated copper cable Nickel-plated copper cable
Initial After low temp. Initial After low temp.
crimp crimp
I10 700.0 TBD 600.0 TBD
I12 450.0 TBD 425.0 TBD
I14 300.0 TBD 250.0 TBD
I16 180.0 TBD 180.0 TBD
I18 150.0 TBD 150.0 TBD
I20 90.0 TBD 85.0 TBD
I22 60.0 TBD 60.0 TBD
I24 55.0 TBD 53.0 TBD
I26 39.0 TBD 36.0 TBD
I28 13,35 TBD N/A TBD
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Table 3 — Voltage drop and tensile strength for terminals and splices used with type II tools

Terminal and Cable size Test current Maximum voltage drop-millivolt Minimum tensile

splice range (amps) drop of equivalent length of cable strength N
plus this value*
Terminal (mV) Splice (mV)
12-10 10 55,0 1,0 2,0 667
12 41,0 1,0 2,0 489
16-14 14 32,0 1,0 2,0 311
16 22,0 1,0 2,0 222
22-18 18 16,0 1,0 2,0 169
22 9,0 1,0 2,0 84,5
24-20 20 11,0 1,0 2,0 67
24 4,5 2,0 4,0 45
26-24 24 4,5 2,0 4,0 45
26 3,0 3,0 6,0 31
*For silver and tin plated cable only.
3.5.16 Life requirements
3.5.16.1 Type I tools

The tools shall be subjected to 200 000 crimping cycles in accordance with 4.7.15.1 The wired contacts crimped

during the life test shall meet the requirements of 3.5.11 and 3.5.12. The tool shall meet the in-service requirements

of 3.5.2 and the requirements of 3.5.4 and 3.5.5.
3.5.16.2 Type II tools

The tool shall be subjected to 25 000 crimping cycles in accordance with 4.7.15.2. The wired assemblies crimped

during the life test shall meet the requirements of 3.5.11 and 3.5.12. The tool shall meet the in service requirements

of 3.5.2 and the requirements of 3.5.4 and 3.5.5.
3.5.16.3 Type III tools

The life requirements of type III tools shall be in accordance with the applicable product standard.

3.5.17 Salt spray (corrosion)

There shall not be any damage to basic tools, turrets, positioners, or dies that impairs operation, or evidence of

corrosion when tested in accordance with 4.7.16.
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3.6 Marking
3.6.1 General

All marking shall be permanently legible using either nameplates, dataplates, or direct marking.

3.6.2 Manufacturer's identification

The manufacturer's name and symbol, or only the symbol shall be marked in the area specified on the product

standard. The symbol alone shall be used when the available space does not allow for legible marking of the

manufacturer's name.
3.6.3 Nameplates and dataplates

Nameplates and dataplates on tools shall be marked with information in accordance with the applicable product

standard. The material of the plates and the mounting of the plates shall be capable of withstanding the

environmental tests specified for the item Marking shall be permanent to the extent required for utilization of the

item.
3.6.4 Direct markings

Basic tools, turrets positioners, dies, and gauges shall be directly marked with information in accordance with the

applicable product standard. Military part numbers shall be permanently marked on the dies and gauges.

3.7 Workmanship

Basic tools, turrets, positioners, dies, gauges shall meet all design dimensions and requirements of this

specification. The tools shall contain no sharp edges or burrs.
4 Verification
4.1 Classification of inspection
The inspection requirements herein are classified as follows:
a) Qualification inspection (see 4.3) ;
b) Conformance inspection (see 4.4).
4.2 Inspection conditions

Unless otherwise specified herein or in the applicable product standard, all inspections shall be performed in

accordance with the test conditions specified as follows:
Temperature: 15 to 35 °C (59 to 95° F).
Relative humidity: 20 to 80 %.
Barometric pressure: 550 to 800 mm of mercury.
4.3 Qualification inspection
4.3.1 General

Qualification inspection shall consist of subjecting the qualification test samples specified in 4.3.1 to the applicable

examinations and tests of table 4, in the sequence shown. The qualifying activity may require that the manufactu

...