1、Assembly tools for screws and nuts Square drive socketsPart 3: Machine-operated sockets (“non-impact“)BS ISO 2725-3:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017Assembly tools for screws and nuts Square drive sockets Part 3: Machine-operated sockets (
2、“non-impact”)Outils de manuvre pour vis et crous Douilles carr conducteur femelle Partie 3: Douilles machine (non-impact)INTERNATIONAL STANDARDISO2725-3Third edition2017-06Reference numberISO 2725-3:2017(E)National forewordThis British Standard is the UK implementation of ISO 2725-3:2017. It superse
3、des BS ISO 2725-3:2015, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee MTE/15, Hand tools.A list of organizations represented on this committee can be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
4、provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 91070 8ICS 25.140.01Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was pub
5、lished under the authority of the Standards Policy and Strategy Committee on 30 June 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO 2725-3:2017 ISO 2017Assembly tools for screws and nuts Square drive sockets Part 3: Machine-operated sockets (“non-impact”)
6、Outils de manuvre pour vis et crous Douilles carr conducteur femelle Partie 3: Douilles machine (non-impact)INTERNATIONAL STANDARDISO2725-3Third edition2017-06Reference numberISO 2725-3:2017(E)BS ISO 2725-3:2017ISO 2725-3:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, P
7、ublished in SwitzerlandAll 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. Perm
8、ission can be requested from either ISO at the address below or ISOs member body in the 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 2725-3:2017ISO 2725-3:2017(E)i
9、i ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll 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
10、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 country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749
11、 09 47copyrightiso.orgwww.iso.orgISO 2725-3:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Tolerances on width across flats 15 Dimensions . 16 Designation 57 Marking 5Bibliography 6 ISO 2017 All rights reserved iiiContents PageBS ISO 2725-3:2017ISO 2725-3:2017(E)Fo
12、rewordISO (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 tech
13、nical 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
14、 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
15、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
16、 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 do
17、es not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trad
18、e (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 10, Assembly tools for screws and nuts, pliers and nippers.This third edition cancels and replaces the second edition (ISO 2725-3:2015), which h
19、as been technically revised to include additional widths across flat sizes not covered by ISO 272 in order to better reflect the current market situation.A list of all parts in the ISO 2725 series can be found on the ISO website.iv ISO 2017 All rights reservedBS ISO 2725-3:2017ISO 2725-3:2017(E)Fore
20、wordISO (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 techni
21、cal 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 e
22、lectrotechnical 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 wa
23、s 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 p
24、atent 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
25、 not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade
26、(TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 10, Assembly tools for screws and nuts, pliers and nippers.This third edition cancels and replaces the second edition (ISO 2725-3:2015), which has
27、 been technically revised to include additional widths across flat sizes not covered by ISO 272 in order to better reflect the current market situation.A list of all parts in the ISO 2725 series can be found on the ISO website.iv ISO 2017 All rights reserved INTERNATIONAL STANDARD ISO 2725-3:2017(E)
28、Assembly tools for screws and nuts Square drive sockets Part 3: Machine-operated sockets (“non-impact”)1 ScopeThis document specifies dimensions, designation, and marking of machine-operated “non-impact” square drive sockets.NOTE Machine-operated “non-impact” square drive sockets covered by this doc
29、ument are the ones identified in ISO 1703 under reference numbers 2 2 02 01 0.2 Normative referencesThe following 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
30、 undated references, the latest edition of the referenced document (including any amendments).ISO 691, Assembly tools for screws and nuts Wrench and socket openings Tolerances for general useISO 1174-2, Assembly tools for screws and nuts Driving squares Part 2: Driving squares for power socket tools
31、3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological 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 .ele
32、ctropedia .org/ 4 Tolerances on width across flatsTolerances on width across flats, s, shall be in conformity with the tolerances for socket openings given in ISO 691. Manufacturers are free to choose the series of deviations.5 DimensionsSee Figure 1 to Figure 3 and Table 1 to Table 5.The figures in
33、 this document are given only as examples. They are not intended to influence the manufacturers design.The driving squares shall conform with ISO 1174-2.Table 1 to Table 3 give the dimensions of sockets for driving squares of 6,3, 10, and 12,5 (according to ISO 1174-2). Table 4 gives the dimensions
34、of the retaining pin. Table 5 gives the dimensions of the retaining ring. ISO 2017 All rights reserved 1BS ISO 2725-3:2017ISO 2725-3:2017(E)During use, the socket shall be maintained by a retaining ring and pin (type G) or by a plunger retainer (type J).Retaining systems G and J can be used for all
35、types of socket and are not dependent on the shape of the socket.Figure 1 Socket shown with type G square conforming to ISO 1174-2Figure 2 Socket shown with type J square conforming to ISO 1174-2Figure 3 Retaining pin and ring2 ISO 2017 All rights reservedBS ISO 2725-3:2017ISO 2725-3:2017(E)During u
36、se, the socket shall be maintained by a retaining ring and pin (type G) or by a plunger retainer (type J).Retaining systems G and J can be used for all types of socket and are not dependent on the shape of the socket.Figure 1 Socket shown with type G square conforming to ISO 1174-2Figure 2 Socket sh
37、own with type J square conforming to ISO 1174-2Figure 3 Retaining pin and ring2 ISO 2017 All rights reserved ISO 2725-3:2017(E)Table 1 Square drive of 6,3sDmaxbtamin.d1max.d2max.l max.mm mm mm mm mm3,2 1,6 1,4 5,914254 2 1,7 6,95 2,5 2,1 8,25,5 3 2,5 8,86c3,5e2,9 9,47 5 3,3 118 6 4,8 12,29c6d5,1 13,
38、51610 8 5,3 14,711 8d5,8 16 16,612c8 6,4 17, 2 17, 813 10 6,9 18,5 19,1atmin= mmax+ 0,1; where mmaxis the maximum height of the nut, according to ISO 4032.bThe maximum thread diameter, Dmax, is the largest nominal thread diameter found in current International Standards like, for example, ISO 4014,
39、ISO 4032 and ISO 272.cNominal dimension not covered by ISO 272.dValue determined in order to avoid reduction in hole clearance size.eValue determined by market study.Table 2 Square drive of 10sDmaxbtamin.d1max.d2max.l max.mm mm mm mm mm7 5 3,3 1120348 6 4,8 12,29c6d5,1 13,510 8 5,3 14,711 8d5,8 1612
40、c8 6,4 17, 22813 10 6,9 18,514c10 7,4 19,715c12 8,0 2116 12d8,5 22,217c12 9,7 23,518 14 10,9 24,719c14 11,9 2620c14d12,4 27, 8atmin= mmax+ 0,1; where mmaxis the maximum height of the nut, according to ISO 4032.bThe maximum thread diameter, Dmax, is the largest nominal thread diameter found in curren
41、t International Standards like, for example, ISO 4014, ISO 4032 and ISO 272.cNominal dimension not covered by ISO 272.dValue determined in order to avoid reduction in hole clearance size. ISO 2017 All rights reserved 3BS ISO 2725-3:2017ISO 2725-3:2017(E)Table 3 Square drive of 12,5sDmaxbtamin.d1max.
42、d2max.l max.mm mm mm mm mm10 8 5,3 15,5284011 8d5,8 16,712c8 6,4 18,013 10 6,9 19,214c10 7,4 20,53715c12 8,0 21,716 12d8,5 2317c12 9,7 24,218 14 10,9 25,519c14 11,9 26,720c14d12,4 2821 16 12,9 29,222c16 13,9 30,523c16d14,4 31,34524 16 14,9 3325c18d14,9 33,527 20 15,9 36,7 39 50atmin= mmax+ 0,1; wher
43、e mmaxis the maximum height of the nut, according to ISO 4032.bThe 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.cNominal dimension not covered by ISO 272.dValue determined in order to
44、avoid reduction in hole clearance size.Table 4 Retaining pinDriving squared3min. max.mm mm6,3 1,4 2,010 2,4 2,912,5 2,9 4Table 5 Retaining ringDriving squared4min. maxmm mm6,3 2,5 6,310 3,5 1012,5 4 12,54 ISO 2017 All rights reservedBS ISO 2725-3:2017ISO 2725-3:2017(E)Table 3 Square drive of 12,5sDm
45、axbtamin.d1max.d2max.l max.mm mm mm mm mm10 8 5,3 15,5284011 8d5,8 16,712c8 6,4 18,013 10 6,9 19,214c10 7,4 20,53715c12 8,0 21,716 12d8,5 2317c12 9,7 24,218 14 10,9 25,519c14 11,9 26,720c14d12,4 2821 16 12,9 29,222c16 13,9 30,523c16d14,4 31,34524 16 14,9 3325c18d14,9 33,527 20 15,9 36,7 39 50atmin=
46、mmax+ 0,1; where mmaxis the maximum height of the nut, according to ISO 4032.bThe 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.cNominal dimension not covered by ISO 272.dValue determin
47、ed in order to avoid reduction in hole clearance size.Table 4 Retaining pinDriving squared3min. max.mm mm6,3 1,4 2,010 2,4 2,912,5 2,9 4Table 5 Retaining ringDriving squared4min. maxmm mm6,3 2,5 6,310 3,5 1012,5 4 12,54 ISO 2017 All rights reserved ISO 2725-3:2017(E)6 DesignationA machine-operated,
48、non-impact square drive socket, conforming to this document shall be designated bya) “Hex non-impact socket” or “Bihex non-impact socket” according to the insert,b) a reference to this document, i.e. ISO 2725-3,c) dimensions of the square drive, in millimetres, andd) width across the flats, in milli
49、metres.EXAMPLE A double hexagon (bihex) machine-operated square drive socket “non-impact” with 12,5 mm square drive size and with width across flats of 10 mm is designated as follows:Bihex non-impact socket ISO 2725-3, 12,5 107 MarkingThe machine-operated square drive non-impact socket shall be marked, permanently and legibly, with at least the following:a) the value of the dimension across the flats;b) the name or trade mark of the manufacturer or supplier;c) the
