BS ISO 7738:2015 BSl Standards Publication Assembly tools for screws and nuts Combination wrenches - Lengths of wrenches and maximum thickness of heads bsi. ..making excellence a habit: BRITISH STANDARD BS ISO 7738:2015 National foreword This British Standard is the UK implementation of IS0 7738:2015. It supersedes BS ISO 7738:2001 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/15, Hand tools. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @ The British Standards Institution 2015.Published by BSI Standards Limited 2015 ISBN9780580801983 ICS 25.140.30 Compliancewitha BritishStandard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Amendments issued since publication Date Text affected BS ISO 7738:2015 ISO INTERNATIONAL STANDARD 7738 Fourth edition 2015-05-01 Assembly tools for screws and nuts Combination wrenches Lengths of wrenches and maximum thickness of heads Outils de manoeuvre pour vis et écrous-Cles mixtes de serrage- Longueurs des clés etépaisseursmaximalesdestetes Reference number IS0 7738:2015(E) TO @ IS0 2015 BS ISO 7738:2015 IS0 7738:2015(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2015 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 Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] web www.iso.org Published in Switzerland ii ISO 2015-Allrights reserved BS ISO 7738:2015 IS0 7738:2015(E) Contents Page Foreword iv 1 Scope .1 2 Normativereference .1 3 Dimensions. .1 4 Technical specifications .1 5 Designation. 1 6 Marking .2 Bibliography 4 @ IS0 2015 - All rights reserved iii BSISO7738:2015 IS0 7738:2015(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,inliaison with Iso, also takepart 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 identifyingany or all suchpatentrights.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 constituteanendorsement. For an explanation on themeaning of Iso specific terms and expressions related to conformity assessment,as wellas information aboutIsO's adherencetotheWTOprinciples inthe Technical Barriers to Trade (TBT), see the follo