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    BS ISO 2725-1-2017 Assembly tools for screws and nuts Square drive sockets Hand-operated sockets《螺钉和螺母的装配工具 方形驱动套筒 手动套筒》.pdf

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    BS ISO 2725-1-2017 Assembly tools for screws and nuts Square drive sockets Hand-operated sockets《螺钉和螺母的装配工具 方形驱动套筒 手动套筒》.pdf

    1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Assembly tools for screws and nuts Square drive socketsPart 1: Hand-operated socketsBS ISO 2725-1:2017 ISO 2017Assembly tools for screws and nuts Square drive sockets Part 1: Hand-operated socketsOutils de manuvre pour

    2、vis et crous Douilles carr conducteur femelle Partie 1: Douilles mainINTERNATIONAL STANDARDISO2725-1Fourth edition2017-06Reference numberISO 2725-1:2017(E)National forewordThis British Standard is the UK implementation of ISO 27251:2017. It supersedes BS ISO 27251:2015, which is withdrawn.The UK par

    3、ticipation 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 i

    4、ts correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 91068 5ICS 25.140.30Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy an

    5、d Strategy Committee on 30 June 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO 27251:2017 ISO 2017Assembly tools for screws and nuts Square drive sockets Part 1: Hand-operated socketsOutils de manuvre pour vis et crous Douilles carr conducteur femelle Par

    6、tie 1: Douilles mainINTERNATIONAL STANDARDISO2725-1Fourth edition2017-06Reference numberISO 2725-1:2017(E)BS ISO 27251:2017ISO 2725-1:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this

    7、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 ISOs member body in the

    8、country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 27251:2017ISO 2725-1:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Tolerances for

    9、width across flats . 15 Dimensions . 16 Designation 77 Marking 7Bibliography 8 ISO 2017 All rights reserved iiiContents PageBS ISO 27251:2017ISO 2725-1:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies).

    10、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-g

    11、overnmental, 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

    12、 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

    13、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 IS

    14、O 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

    15、 related to conformity assessment, as well as information about ISOs 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 29, Small tools,

    16、 Subcommittee SC 10, Assembly tools for screws and nuts, pliers and nippers.This fourth edition cancels and replaces the third edition (ISO 2725-1:2015), which has been technically revised with the following changes:a) additional widths across flat sizes not covered by ISO 272 have been included, in

    17、 order to better reflect the current market situation;b) Clause 5 “Technical specifications” has been deleted, as these are given in ISO 1711-1.A list of all parts in the ISO 2725 series can be found on the ISO website.iv ISO 2017 All rights reservedBS ISO 27251:2017INTERNATIONAL STANDARD ISO 2725-1

    18、:2017(E)Assembly tools for screws and nuts Square drive sockets Part 1: Hand-operated sockets1 ScopeThis document specifies dimensions, the designation, and the marking of hand-operated square drive sockets with operating end and having a hexagonal or double hexagonal form in accordance with ISO 117

    19、4-1.NOTE Hand-operated square drive sockets covered by this document are the ones identified in ISO 1703 under reference numbers 2 1 02 01 0.This document does not cover technical specifications for these products. Technical specifications are given in ISO 1711-1.2 Normative referencesThe following

    20、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 691, Ass

    21、embly tools for screws and nuts Wrench and socket openings Tolerances for general useISO 1174-1, Assembly tools for screws and nuts Driving squares Part 1: Driving squares for hand socket tools3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminolog

    22、ical databases for use in standardization at the following addresses: ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp IEC Electropedia: available at h t t p :/ www .electropedia .org/ 4 Tolerances for width across flatsTolerances for width across flats, s, shall be in confor

    23、mity with the tolerances for socket openings given in ISO 691. Manufacturers are free to choose the series of deviations.5 DimensionsTable 1 to Table 5 gives the dimensions, in millimetres, of sockets shown in Figure 1 to Figure 3 for driving squares of 6,3 to 25, which shall be in accordance with I

    24、SO 1174-1. ISO 2017 All rights reserved 1BS ISO 27251:2017ISO 2725-1:2017(E)The figures in this document are given only as examples. They are not intended to influence the manufacturers design.NOTE Width across flats, s, are partly taken from ISO 272.Key 115 150Figure 1 Sockets with d1d2Table 1 Squa

    25、re drive of 6,3sDmaxctamin.d1max.d2max.d3bmin.lmax. min.Bolt clearance holeType A (normal)Type B (long)mm mm mm mm mm mm mm3,2 1,6 1,4 5,9 12,5 1,7 26 454 2 1,7 6,9 12,5 2,1 26 455 2,5 2,1 8,2 12,5 2,6 26 455,5 3 2,5 8,8 12,5 3,2 26 456d3,5f2,9 9,4 12,5 3,7 26 457 5 3,3 11 12,5 5,3 26 458 6 4,8 12,2

    26、 12,5 6,3 26 459d6e5,1 13,5 13,5 6,3 26 4510 8 5,3 14,7 14,7 8,4 26 4511 8e5,8 16 16 8,4 26 4512d8 6,4 17, 2 17, 2 8,4 26 4513 10 6,9 18,5 18,5 10,5 26 4514d10 7,4 19,7 19,7 10,5 26 4515d12 8,0 21,5 21,5 12,6 26 4516 12e8,5 22 22 12,6 26 4517d12 9,7 22,5 22,5 12,6 26 45NOTE tminis interpolated for s

    27、izes not covered by ISO 4032 and ISO 4014.atmin= mmax+ 0,1; where mmaxis the maximum height of the nut, according to ISO 4032.bd3min= Dmax 1,05.cThe maximum thread diameter, Dmax, is the largest nominal thread diameter found in current International Standards like, for example, ISO 4014, ISO 4032 an

    28、d ISO 272.dNominal dimension not covered by ISO 272.eValue determined in order to avoid reduction in hole clearance size.fValue determined by market study. ISO 2017 All rights reserved 3BS ISO 27251:2017ISO 2725-1:2017(E)Table 2 Square drive of 10sDmaxctamin.d1max.d2max.d3bmin.lmax. min.Bolt clearan

    29、ce holeType A (normal)Type B (long)mm mm mm mm mm mm mm6d3,5f2,9 10,1 20 3,7 32 447 5 3,3 11 20 5,3 32 448 6 4,8 12,2 20 6,3 32 449d6e5,1 13,5 20 6,3 32 4410 8 5,3 14,7 20 8,4 32 4411 8e5,8 16 20 8,4 32 4412d8 6,4 17, 2 20 8,4 32 4413 10 6,9 18,5 20 10,5 32 4414d10 7,4 19,7 24 10,5 32 4515d12 8,0 21

    30、,0 24 12,6 32 4516 12e8,5 22,2 24 12,6 35 5017d12 9,7 23,5 24 12,6 35 5418 14 10,9 24,7 24,7 14,7 35 5419d14 11,9 26 26 14,7 35 6020d14e12,4 27, 8 27, 8 14,7 35 6021 16 12,9 28,5 28,8 16,8 38 6022d16 13,9 29,7 29,7 16,8 38 6023d16e14,4 31,3 31,3 16,8 38 6024 16 14,9 32,5 32,5 16,8 38 6525 18 14,9 33

    31、 33 18,3 38 65NOTE tminis interpolated for sizes not covered by ISO 4032 and ISO 4014.atmin= mmax+ 0,1; where mmaxis the maximum height of the nut, according to ISO 4032.bd3min= Dmax 1,05.cThe maximum thread diameter, Dmax, is the largest nominal thread diameter found in current International Standa

    32、rds like, for example, ISO 4014, ISO 4032 and ISO 272.dNominal dimension not covered by ISO 272.eValue determined in order to avoid reduction in hole clearance size.fValue determined by market study.4 ISO 2017 All rights reservedBS ISO 27251:2017ISO 2725-1:2017(E)Table 3 Square drive of 12,5sDmaxcta

    33、min.d1max.d2max.d3bmin.lmax. min.Bolt clearance holeType A (normal)Type B (long)mm mm mm mm mm mm mm8 6 4,8 14 24 6,3 40 759d6e5,1 14,1 24 5,8 40 7510 8 5,3 15,5 24 8,4 40 7511 8e5,8 16,7 24 8,4 40 7512d8 6,4 18 24 8,4 40 7513 10 6,9 19,2 24 10,5 40 7514d10 7,4 20,5 24 10,5 40 7515d12 8,0 21,7 24 12

    34、,6 40 7516 12e8,5 23 25,5 12,6 40 7517d12 9,7 24,2 25,5 12,6 40 7518 14 10,9 25,5 25,5 14,7 42 7519d14 11,9 26,7 26,7 14,7 42 7520d14e12,4 28 28 14,7 42 7521 16 12,9 29,2 29,2 16,8 44 7522d16 13,9 30,5 30,5 16,8 44 7523d16e14,4 31,3 31,3 16,8 46 7524 16 14,9 33 33 16,8 46 7525d18e14,9 33,4 33,4 18,3

    35、 46 7527 20 15,9 36,7 36,7 21,0 48 7530 20 18,1 40,5 40,5 21,0 50 7532d24 18,8 43 43 25,2 50 7534 24e19,5 46,5 46,5 25,2 52 75NOTE tminis interpolated for sizes not covered by ISO 4032 and ISO 4014.atmin= mmax+ 0,1; where mmaxis the maximum height of the nut, according to ISO 4032.bd3min= Dmax 1,05.

    36、cThe maximum thread diameter, Dmax, is the largest nominal thread diameter found in current International Standards like, for example, ISO 4014, ISO 4032 and ISO 272.dNominal dimension not covered by ISO 272.eValue determined in order to avoid reduction in hole clearance size. ISO 2017 All rights re

    37、served 5BS ISO 27251:2017ISO 2725-1:2017(E)Table 4 Square drive of 20sDmaxctamin.d1max.d2max.d3bmin.lmax. min.Bolt clearance holeType A (normal)Type B (long)mm mm mm mm mm mm mm20d14e12,4 31,5 33 14,7 55 8521 16 12,9 32,1 40 16,8 55 8522d16 13,9 33,3 40 16,8 55 8523d16e14,4 35,8 40 16,8 55 8524 16 1

    38、4,9 35,8 40 16,8 55 8525d18e14,9 37,9 40 18,3 55 8527 20 15,9 39,6 40 21,0 60 8530 20 18,1 43,3 43,3 21,0 60 8532d24 18,8 45,8 45,8 25,2 60 8534 24e19,5 48,3 48,3 25,2 65 8536 24 21,6 50,8 50,8 25,2 67 8541 27 23,9 57,1 57,1 28,4 70 8546 30 25,7 63,3 63,3 31,5 83 10050 33 28,8 68,3 68,3 34,7 89 1005

    39、5 36 31,1 74,6 74,6 37,8 95 10060 39 33,5 84,5 84,5 41,0 100 100NOTE tminis interpolated for sizes not covered by ISO 4032 and ISO 4014.atmin= mmax+ 0,1; where mmaxis the maximum height of the nut, according to ISO 4032.bd3min= Dmax 1,05.cThe maximum thread diameter, Dmax, is the largest nominal thr

    40、ead diameter found in current International Standards like, for example, ISO 4014, ISO 4032 and ISO 272.dNominal dimension not covered by ISO 272.eValue determined in order to avoid reduction in hole clearance size.Table 5 Square drive of 25sDmaxctamin.d1max.d2max.d3bmin.lmax.Bolt clearance holeType

    41、 A (normal)mm mm mm mm mm mm41 27 23,9 61 59,7 28,4 8346 30 25,7 66,4 55 31,5 8050 33 28,8 71,4 55 34,7 8555 36 31,1 77,6 57 37,8 95NOTE tminis interpolated for sizes not covered by ISO 4032 and ISO 4014.atmin= mmax+ 0,1; where mmaxis the maximum height of the nut, according to ISO 4032.bd3min= Dmax

    42、 1,05.cThe maximum thread diameter, Dmax, is the largest nominal thread diameter found in current International Standards like, for example, ISO 4014, ISO 4032 and ISO 272.6 ISO 2017 All rights reservedBS ISO 27251:2017ISO 2725-1:2017(E)sDmaxctamin.d1max.d2max.d3bmin.lmax.Bolt clearance holeType A (

    43、normal)mm mm mm mm mm mm60 39 33,5 83,9 61 41,0 10365 42 34,1 90,1 78 44,1 11070 45 36,1 96,5 84 47,3 116NOTE tminis interpolated for sizes not covered by ISO 4032 and ISO 4014.atmin= mmax+ 0,1; where mmaxis the maximum height of the nut, according to ISO 4032.bd3min= Dmax 1,05.cThe maximum thread d

    44、iameter, Dmax, is the largest nominal thread diameter found in current International Standards like, for example, ISO 4014, ISO 4032 and ISO 272.6 DesignationA hand-operated square drive socket in accordance with this document shall be designated bya) “Hex socket” or “Bi-hex socket”, depending on it

    45、s form,b) a reference to this document, i.e. ISO 2725-1,c) square drive dimensions, in millimetre,d) width across flats, in millimetre, ande) type.EXAMPLE A double hexagon hand-operated square drive socket with 12,5 mm square size and width across flats s = 10 mm, normal Type A, is designated as fol

    46、lows:Bi-hex socket ISO 2725-1, 12,5 10 - A7 MarkingThe hand-operated square drive socket shall be marked, permanently and legibly, with at least the following information: the name or trademark of the manufacturer or supplier; the width across flats.Table 5 (continued) ISO 2017 All rights reserved 7

    47、BS ISO 27251:2017ISO 2725-1:2017(E)Bibliography1 ISO 272, Fasteners Hexagon products Widths across flats2 ISO 4014, Hexagon head bolts Product grades A and B3 ISO 4032, Hexagon regular nuts (style 1) Product grades A and B4 ISO 1703, Assembly tools for screws and nuts Designation and nomenclature5 I

    48、SO 1711-1, Assembly tools for screws and nuts Technical specifications Part 1: Hand-operated wrenches and sockets6 ISO 2725-2, Assembly tools for screws and nuts Square drive sockets Part 2: Machine-operated sockets (“impact”)8 ISO 2017 All rights reservedBS ISO 27251:2017BS ISO 27251:2017ISO 2725-1

    49、:2017(E) ISO 2017 All rights reservedICS 25.140.30Price based on 8 pagesBS ISO 27251:2017This page deliberately left blankThis 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. British Standards and other standardization products are published by BSI Standards Limited.British S


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