ISO 2725-3:2017 - Part 3 - Machine-operated sockets (“nonimpact”)

Oct 13, 2026

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ISO 2725-3:2017(E) specifies assembly tools for screws and nuts with square drive sockets, focusing on Part 3: machine-operated sockets (“nonimpact”). The document defines scope, normative references, key terms, tolerances on width across flats, dimensional requirements, and designation rules. It also provides marking requirements for the socket assemblies and includes a bibliography for supporting information, aligning content with ISO editorial directives and standard development procedures.

LanguageEnglish

CategoryPaper Templates

FormatPDF

Pages9

Reading Time3 min

AccessFree to download

Scope

Normative references

Terms and definitions

Tolerances on width across flats

Dimensions

Designation

Marking

Bibliography

INTERNATIONAL STANDARD ISO 2725-3 Third edition 2017-06 Assembly tools for screws and nuts—Square drive sockets— Part 3: Machine-operated sockets (“nonimpact”) iTeh S TfNilsell—aRnœDuvrePpoRurisVetIéEcroWus—Douilles à carré conducteur (stParntied3a: Droi[e](e.si)[.](e.si)[s](e.si)[i](e.si)emc.hainie)(non-impact) ISO 2725-3:2017 [https://standards.iteh.ai/catalog/standards/sist/d4e85a78-277e-4f88-9a69-](https://standards.iteh.ai/catalog/standards/sist/d4e85a78-277e-4f88-9a69-) 13ceea2f983c/iso-2725-3-2017 Reference number ISO 2725-3:2017(E) © ISO 2017 ISO 2725-3:2017(E) iTeh STANDARD PREVIEW ( [standards.iteh.ai](standards.iteh.ai)) ISO 2725-3:2017 [https://standards.iteh.ai/catalog/standards/sist/d4e85a78-277e-4f88-9a69-](https://standards.iteh.ai/catalog/standards/sist/d4e85a78-277e-4f88-9a69-)[ ](https://standards.iteh.ai/catalog/standards/sist/d4e85a78-277e-4f88-9a69-)13ceea2f983c/iso-2725-3-2017 COPYRIGHT PROTECTED DOCUMENT © ISO 2017, Published in Switzerland All rights reserved. Unless otherwise specified, 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 Ch. de Blandonnet 8 • CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [copyright@iso.org](copyright@iso.org) [www.iso.org](www.iso.org) ii © ISO 2017 – All rights reserved ISO 2725-3:2017(E) Contents Page Foreword ........................................................................................................................................................................................................................................ iv 1 Scope ................................................................................................................................................................................................................................. 1 2 Normative references ...................................................................................................................................................................................... 1 3 Terms and definitions ..................................................................................................................................................................................... 1 4 Tolerances on width across flats.......................................................................................................................................................... 1 5 Dimensions................................................................................................................................................................................................................. 1 6 Designation ................................................................................................................................................................................................................ 5 7 Marking .......................................................................................................................................................................................................................... 5 Bibliography ................................................................................................................................................................................................................................ 6 iTeh STANDARD PREVIEW ( [standards.iteh.ai](standards.iteh.ai)) ISO 2725-3:2017 [https://standards.iteh.ai/catalog/standards/sist/d4e85a78-277e-4f88-9a69-](https://standards.iteh.ai/catalog/standards/sist/d4e85a78-277e-4f88-9a69-) 13ceea2f983c/iso-2725-3-2017 © ISO 20

FAQs

What does ISO 2725-3:2017 Part 3 cover?

It covers machine-operated square drive sockets (“nonimpact”) used as assembly tools for screws and nuts, defining requirements for tolerances, dimensions, designation, and marking.

Which tolerance requirement is included in the document?

It includes tolerances on width across flats as specified in the relevant section.

What information is provided besides dimensions?

The document provides sections for designation and marking, along with terms and definitions, normative references, and a bibliography.

Oct 13, 2026

Upload by noah