ISO/PRF 262

ISO general purpose metric screw threads — Selected sizes for bolts, screws, studs and nuts

This International Standard specifies selected sizes for screws, bolts and nuts in the diameter range from 1 mm to 64 mm of ISO general purpose metric screw threads (M) having basic profile according to ISO 68-1. These selected sizes are recommended also for general engineering use. These screw threads are selected from ISO 261. For thread designations see ISO 965-1.

Filetages métriques ISO pour usages généraux — Sélection de dimensions pour la boulonnerie

La présente Norme internationale spécifie une sélection de dimensions pour la boulonnerie dans la gamme de diamètres de 1 mm à 64 mm des filetages ISO métriques (M) pour usages généraux, dont le profil de base est conforme à l'ISO 68-1. Les dimensions retenues sont aussi recommandées pour l'ingénierie générale. Les filetages sont sélectionnés conformément à l'ISO 261. Pour la désignation des filetages, voir l'ISO 965-1.

General Information

• Status: Not Published
• ICS: 21.040.10 - Metric screw threads
• Technical Committee: ISO/TC 1 - Screw threads
• Drafting Committee: ISO/TC 1 - Screw threads
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Completion Date: 21-Feb-2023

Relations

• Revises: ISO 262:1998 - ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 262
Third edition
ISO general purpose metric screw
threads — Selected sizes for bolts,
screws, studs and nuts
Filetages métriques ISO pour usages généraux — Sélection de
dimensions pour la boulonnerie
PROOF/ÉPREUVE
Reference number
ISO 262:2023(E)
© ISO 2023
---------------------- Page: 1 ----------------------
ISO 262:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023

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 on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE © ISO 2023 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 262:2023(E)
Contents Page

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

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

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

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

4 Selected sizes ........................................................................................................................................................................................................... 1

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

Bibliography ................................................................................................................................................................................................................................ 3

iii
© ISO 2023 – All rights reserved PROOF/ÉPREUVE
---------------------- Page: 3 ----------------------
ISO 262:2023(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

...

ISO 262:2023(E)
ISO TC 1
Date: 2022-12-292023-02-21

ISO general purpose metric screw threads — Selected sizes for bolts, screws, studs and nuts

Filetages métriques ISO pour usages généraux — Sélection de dimensions pour la boulonnerie

---------------------- Page: 1 ----------------------
ISO 262:2023(E)
© ISO 2023

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 on the internet or an intranet, without

prior written permission. Permission can be requested from either ISO at the address below or

ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
ii © ISO 2023 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 262:2023(E)
Contents

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

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

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

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

4 Selected sizes ....................................................................................................................................... 1

Table 1 — Sizes for bolts, screws, studs and nuts .................................................................................. 1

5 Designation ........................................................................................................................................... 3

Bibliography ...................................................................................................................................................... 4

© ISO 2023 – All rights reserved iii
© ISO 2022 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 262:2023(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 of the voluntary nature of sta
...