1、BSI Standards Publication BS ISO 7738:2015 Assembly tools for screws and nuts Combination wrenches Lengths of wrenches and maximum thickness of headsBS ISO 7738:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 7738:2015. It supersedes BS ISO 7738:2001 whi
2、ch is withdrawn.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
3、. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 80198 3 ICS 25.140.30 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the au
4、thority of the Standards Policy and Strategy Committee on 30 April 2015. Amendments issued since publication Date Text affectedBS ISO 7738:2015 ISO 2015 Assembly tools for screws and nuts Combination wrenches Lengths of wrenches and maximum thickness of heads Outils de manoeuvre pour vis et crous Cl
5、s mixtes de serrage Longueurs des cls et paisseurs maximales des ttes INTERNATIONAL STANDARD ISO 7738 Fourth edition 2015-05-01 Reference number ISO 7738:2015(E)BS ISO 7738:2015ISO 7738:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015 All rights reserved. Unless otherwise
6、 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
7、 or ISOs 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 copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 7738:2015ISO 7738:2015(E)Foreword iv 1 Scope . 1 2 Normative reference . 1
8、3 Dimensions . 1 4 T echnical specifications 1 5 Designation 1 6 Marking 2 Bibliography 4 ISO 2015 All rights reserved iii Contents PageBS ISO 7738:2015ISO 7738:2015(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO membe
9、r 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, governmenta
10、l 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 a
11、re 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
12、 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
13、 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 meaning of ISO specific terms and expressions related to conformity ass
14、essment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information. The committee responsible for this document is ISO/TC 29, Small tools, Subcommittee SC 10, Assembly tools for screws and nut
15、s, pliers and nippers. This fourth edition cancels and replaces the third edition (ISO 7738:2001), which has been technically revised with the following changes: a) This International Standard has been editorially updated, including editorial changes in the scope; b) the normative references have be
16、en updated; c) a new Clause 4 about technical specifications has been included; d) additional opening sizes have been included in Table 1; e) a bibliography has been added.iv ISO 2015 All rights reservedBS ISO 7738:2015Assembly tools for screws and nuts Combination wrenches Lengths of wrenches and m
17、aximum thickness of heads 1 Scope This International Standard specifies the overall length and the maximum head thickness of combination wrenches, offset (Form A) and offset (Form B). NOTE Combination wrenches are listed in ISO 1703, under designation 1 1 01 05 0 (Form A) and designation 1 1 01 06 0
18、 (Form B). 2 Normative reference The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including
19、 any amendments) applies. ISO 691:2005, Assembly tools for screws and nuts Wrench and socket openings Tolerances for general use ISO 1711-1, Assembly tools for screws and nuts Technical specifications Part 1: Hand-operated wrenches and sockets 3 Dimensions Dimensions shall be according to Figure 1 a
20、nd Table 1. The tolerances of the wrench opening, s, shall conform to those shown in ISO 691:2005, Table 1, “Tolerance class 1” series. Figure 1 of this International Standard is only an example and should not inf luence the design of the wrench. 4 T echnic al specifica tions The technical specifica
21、tions shall be in accordance with ISO 1711-1. 5 Designation A combination wrench in accordance with this International Standard shall be designated by the following: a) “Wrench” b) reference to this International Standard, i.e. ISO 7738; c) series, i.e. short, medium, or long; d) Form, i.e. A or B;
22、e) wrench opening. EXAMPLE A modified offset (Form B) combination wrench, medium series, with the wrench opening of 12 mm is designated as follows: Wrench ISO 7738 - Medium B 12 INTERNATIONAL ST ANDARD ISO 7738:2015(E) ISO 2015 All rights reserved 1BS ISO 7738:2015ISO 7738:2015(E) 6 Marking Combinat
23、ion wrenches, offset and modified offset, shall be marked, permanently and legibly, with the following: a) wrench opening; b) name or trademark of the manufacturer (or the responsible supplier). a) Form A offset b ) F o r m B m o d i f i e d o f f s e t Figure 1 Combination wrenches Table 1 Lengths
24、of wrenches and thickness of the heads Nominal width across f l at s Series “short” Series “medium” Series “long” Thickness of the heads l max l max(non- preferred) l min l max l min(non- preferred) l min e 1, max e 2, max mm mm mm mm mm mm mm mm 3,2 54 80 55 110 3,3 5 3,5 a 54 80 55 110 3,5 5,5 4 5
25、4 80 55 110 3,5 5,5 4,5 a 64 85 65 115 4 6 5 64 85 65 115 4 6 5,5 69 85 70 120 4,2 6,3 6 a 74 90 75 120 4,5 6,5 aNot according to ISO 272.2 ISO 2015 All rights reservedBS ISO 7738:2015ISO 7738:2015(E) Nominal width across f l at s Series “short” Series “medium” Series “long” Thickness of the heads l
26、 max l max(non- preferred) l min l max l min(non- preferred) l min e 1, max e 2, max mm mm mm mm mm mm mm mm 7 79 95 80 130 5 7 8 89 100 90 145 120 146 5 8 9 a 99 105 100 150 125 151 5,5 8,5 10 109 115 110 155 135 156 6 9 11 114 120 115 160 140 161 6,5 9,5 12 a 124 135 125 175 155 176 7 10 13 134 14
27、5 135 190 165 191 7 11 14 a 144 150 145 200 175 201 7, 5 11,5 15 a 149 155 150 210 185 211 8 12 16 159 170 160 225 205 226 8 12,5 17 a 169 180 170 240 215 241 8,5 13 18 179 190 180 250 230 251 9 14 19 a 184 200 185 260 230 261 9 14,5 20 a 200 265 266 10 15 21 205 270 250 271 10 15,5 22 a 215 280 260
28、 281 10,5 16 23 a 220 290 291 11 17 24 230 300 270 301 11 17, 5 25 a 240 310 311 12 18 27 255 330 300 331 12,5 19 30 285 370 330 371 13,5 20 32 a 300 390 350 391 14,5 21 34 320 415 385 416 15 22,5 36 335 435 405 436 15,5 23,5 41 380 495 455 496 17, 5 26,5 46 425 555 515 556 19,5 29,5 50 460 600 560
29、601 21 32 55 560 650 651 22 33 60 595 710 701 24 35 aNot according to ISO 272.Table 1 (continued) ISO 2015 All rights reserved 3BS ISO 7738:2015ISO 7738:2015(E) Bibliography 1 ISO 1703, Assembly tools for screws and nuts Designation and nomenclature4 ISO 2015 All rights reservedBS ISO 7738:2015BS IS
30、O 7738:2015ISO 7738:2015(E) ISO 2015 All rights reserved IC S 25.140.30 Price based on 4 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services. BSI is incorporated by Royal Charter
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