Diesel engines -- 60° female cones for high-pressure fuel injection components

ISO 2974:2018 specifies the dimensional requirements of end-connections for high-pressure fuel injection equipment components, used on diesel (compression-ignition) engines. ISO 2974:2018 is applicable to externally threaded 60° female cones (see Figures 1, 2, 5, and 6) and intended for use with high-pressure fuel injection pipe assemblies with tube outside diameters of: - up to and including 12 mm for integral female cones (see Table 1); and - up to and including 9 mm for fabricated female cones (see Table 2). Details of the pipe connection ends referenced in this document are shown in ISO 13296.

Moteurs diesels -- Raccords finaux à cône femelle de 60° pour lignes d'injection de combustible haute pression

General Information

Status
Published
Publication Date
07-Mar-2018
Current Stage
6060 - International Standard published
Start Date
17-Feb-2018
Completion Date
08-Mar-2018
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INTERNATIONAL ISO
STANDARD 2974
Ninth edition
2018-03
Diesel engines — 60° female cones
for high-pressure fuel injection
components
Moteurs diesels — Raccords finaux à cône femelle de 60° pour lignes
d'injection de combustible haute pression
Reference number
ISO 2974:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 2974:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

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below or ISO’s member body in the country of the requester.
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ii © ISO 2018 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 2974:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

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

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

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Requirements .......................................................................................................................................................................................................... 2

4.1 Dimensions and tolerances .......................................................................................................................................................... 2

4.2 Materials ....................................................................................................................................................................................................... 2

5 Designation ................................................................................................................................................................................................................ 2

6 Figures and tables ............................................................................................................................................................................................... 3

6.1 Integral 60° female cone ................................................................................................................................................................. 3

6.2 Fabricated 60° female cone .......................................................................................................................................................... 7

Bibliography .............................................................................................................................................................................................................................10

© ISO 2018 – All rights reserved iii
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ISO 2974:2018(E)
Foreword

ISO (the International Organization for Standardization) 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

organizations, 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 standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 34,

Propulsion, powertrain, and powertrain fluids.

This ninth edition cancels and replaces the eighth edition (ISO 2974:2016), of which it constitutes a

minor revision. The changes compared to the previous edition are as follows:

— the surface roughness designation in Figures 1 and 5 has been corrected to reflect Best Practices;

— minor typing errors within Figures 1 and 5 have been corrected.
iv © ISO 2018 – All rights reserved
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INTERNATIONAL STANDARD ISO 2974:2018(E)
Diesel engines — 60° female cones for high-pressure fuel
injection components
1 Scope

This document specifies the dimensional requirements of end-connections for high-pressure fuel

injection equipment components, used on diesel (compression-ignition) engines.

It is applicable to externally threaded 60° female cones (see Figures 1, 2, 5, and 6) and intended for use

with high-pressure fuel injection pipe assemblies with tube outside diameters of:

— up to and including 12 mm for integral female cones (see Table 1); and
— up to and including 9 mm for fabricated female cones (see Table 2).

Details of the pipe connection ends referenced in this document are shown in ISO 13296.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 261, ISO general purpose metric screw threads — General plan

ISO 1302, Geometrical Product Specifications (GPS) — Indication of surface texture in technical product

documentation

ISO 3508, Thread run-outs for fasteners with thread in accordance with ISO 261 and ISO 262

ISO 13296, Diesel engines — High-pressure fuel injection pipe assemblies — General requirements and

dimensions
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
integral female cone
female cone where the sealing cone and the thread are connected in the same part
Note 1 to entry: See Figures 1 and 2.
3.2
fabricated female cone

female cone where the sealing cone and the thread are separate parts prior to joining, e.g. by welding

Note 1 to entry: See Figures 5 and 6.
© ISO 2018 – All rights reserved 1
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ISO 2974:2018(E)
3.3
reference diameter
baseline for dimensioning of the female cone and the pipe end form

Note 1 to entry: S can be coincident with the intended nominal sealing interface between the female cone and the

pipe end form, or not.
4 Requirements
4.1 Dimensions and tolerances

The following figures indicate the requirements for the 60° female cones at fuel injectors, CR-injectors,

fuel injection pumps, high-pressure supply pumps, and rails to allow interchangeability for high-

pressure fuel injection pipe assemblies according to ISO 13296:
— Figures 1, 2, 3, and 4 for integral female cones;
— Figures 5, 6, and 7 for fabricated female cones.
...

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