1、BS ISO 1711-2:2016Assembly tools for screws and nuts Technical specificationsPart 2: Machine-operated sockets (impact)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 1711-2:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of
2、 ISO 1711-2:2016. It supersedes BS ISO 1711-2:2015 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee MTE/15, Hand tools.A list of organizations represented on this committee can be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
3、 include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 91053 1 ICS 25.140.01 Compliance with a British Standard cannot confer immunity from legal obligations.
4、This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 1711-2:2016 ISO 2016Assembly tools for screws and nuts Technical specifications Part 2: Machine-
5、operated sockets (impact)Outils de manoeuvre pour vis et crous Spcifications techniques Partie 2: Douilles machine (impact)INTERNATIONAL STANDARDISO1711-2Third edition2016-11-15Reference numberISO 1711-2:2016(E)BS ISO 1711-2:2016ISO 1711-2:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DO
6、CUMENT ISO 2016, 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 on the internet or an intranet, without prior writte
7、n 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 09 47copyrightiso.orgwww.iso.orgBS ISO 1711-2:2016I
8、SO 1711-2:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Test torsion torques 15 Materials . 26 Hardness testing . 27 Torque testing . 27.1 Method . 27.2 Test of machine-operated square drive sockets . 3Bibliography 6 ISO 2016 All rights reserved iiiC
9、ontents PageBS ISO 1711-2:2016ISO 1711-2:2016(E)ForewordISO (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 me
10、mber 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, in liaison with ISO, also take part in the work. ISO collaborates closely with the International E
11、lectrotechnical 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 type
12、s 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 h
13、eld 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 ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is informati
14、on 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 assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barrier
15、s to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is 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 1711-2:2015), which
16、has been technically revised with the following changes: Clause 4 has been added, giving empiric formulae for minimum test torsion torques as a function of width across flats; in 7.1 the angle chamfer of the test mandrel in Figure 1 has been changed from 30 max to 15 30; revision of sizes for width
17、across flats covered in Table 3; Sizes 3,5, 4,5, 26 and 28 have been deleted; revision of minimum test torque values in Table 3.A list of all parts in the ISO 1711 series can be found on the ISO website.iv ISO 2016 All rights reservedBS ISO 1711-2:2016ISO 1711-2:2016(E)IntroductionWhen testing machi
18、ne-operated impact sockets, there are three types of testing that could be relevant: torsional testing; impact testing; endurance testing.This document covers only torsional testing of machine-operated sockets. Presently, the torsional test and hardness values given in this document ensure sockets w
19、ill last a reasonable impact life if the appropriate tool is used.An impact test or endurance test is desired, but at present, there is no procedure suitable for standardization available. This will be an issue for a future revision of this document. ISO 2016 All rights reserved vBS ISO 1711-2:2016B
20、S ISO 1711-2:2016Assembly tools for screws and nuts Technical specifications Part 2: Machine-operated sockets (impact)1 ScopeThis document specifies hardness and minimum torsional strength for machine-operated square drive sockets in accordance with ISO 2725-2 intended for use with impact wrenches.E
21、XAMPLE Reference nos. 2 2 02 01 0; 2 2 02 02 0; 5 2 00 04 0.NOTE The sockets mentioned above are listed under their respective reference numbers in ISO 1703.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requireme
22、nts 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 6508-1, Metallic materials Rockwell hardness test Part 1: Test method3 Terms and definitionsNo terms and definition
23、s are listed in this document.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 Test torsion torquesThe empiric formulae giv
24、ing minimum test torsion torques, M, in newton metres, as a function of width across flats, s, in millimetres, are given for information in Table 1.The minimum test torsion torques to be applied are given in Table 3.Table 1 Formulae giving minimum test torsion torquesNominal dimension for driving sq
25、uareMinimum test torsion torque M N m6,3 s1,710 0,6 s2,312,5 1,85 s2INTERNATIONAL STANDARD ISO 1711-2:2016(E) ISO 2016 All rights reserved 1BS ISO 1711-2:2016ISO 1711-2:2016(E)20 6,5 s1,8525 70 s1,240 48 s1,55 MaterialsSockets, driving squares and all accessories shall be manufactured from steel.The
26、 chemical composition and heat treatment shall be to produce tools conforming to requirements specified hereinafter.6 Hardness testingThe hardness test shall be carried out in accordance with ISO 6508-1.Sockets and attachments shall be hardened and tempered to Rockwell hardness values given in Table
27、 2.Table 2 Rockwell hardness values for machine-operated sockets as function of driving square and hexagon width across flats, s aHardness HRCDriving square nominal size b6,3 10 12,5 20 25 4040 to 48 3,2 s 16 7 s 14 8 s 14 38 to 46 15 s 24 15 s 34 17 s 60 27 s 70 36 s 70aWidth across flats s are acc
28、ording to ISO 272.bFor dimensions of driving squares, see ISO 1174-2.7 Torque testing7.1 MethodThe minimum test torsion torque values to be applied are given in Table 3.The socket shall be fully engaged in a hexagon test mandrel as shown in Figure 1. The height, h, and the width across corners, emin
29、, of the mandrel are specified in Table 3. The angle of the chamfer shall be between 15 and 30.Smoothly apply the load until the minimum testing torque as given in Table 3 is reached.The nominal across-flats dimension of the test mandrel shall be equal to the nominal dimension, s, with a tolerance o
30、f h8. The mandrel shall be hardened to not less than hardness 55 HRC.A device in which the mandrel can be rotated at a certain torque determined with an accuracy of 2,5 % can also be used for this test.Following the application of the minimum test torsion torque, any possible damage or deformation s
31、hall not affect the usability of the tool.Table 1 (continued)2 ISO 2016 All rights reservedBS ISO 1711-2:2016ISO 1711-2:2016(E)Key angle of the chamfer, 15 30eminwidth across cornersh test mandrel heights width across flatsNOTE The use of the 30 chamfer will reduce the effective engagement which mig
32、ht affect the ultimate test torque.Figure 1 Test mandrel height, h, and width across flats, s7.2 Test of machine-operated square drive socketsA square mandrel of hardness not less than 55 HRC shall be used for driving the socket for nominal width across flats 22 mm and smaller. A square mandrel of h
33、ardness not less than 50 HRC shall be used for driving the socket for nominal width across flats 24 mm and larger. The nominal width across-flats dimension of this mandrel shall be equal to the maximum dimension, with a tolerance of h8, of the corresponding square drive.The axis of the two mandrels
34、and the axis of the socket shall remain coaxial during the test. ISO 2016 All rights reserved 3BS ISO 1711-2:2016ISO 1711-2:2016(E)Table 3 Minimum test torsion torque and test mandrel height as a function of width across flatsNominal width across flats sMinimum test torsion torque bM NmTest mandrel
35、mmDriving square nominal sizecHeight h h13Width across corners eemin6,3 10 12,5 20 25 403,2 7, 2 1,3 3,624 10,6 1,6 4,525 15,4 2 5,655,5 18,1 2,4 6,226 a21,0 37 2,8 6,787 27, 3 53 3,2 7,918 34,3 72 118 4 9,049 a41,9 94 150 4,4 10,1710 50,1 120 185 4,8 11,3011 58,9 149 224 5,6 12,4312 a68,3 182 266 6
36、 13,5613 75,0 d219 313 6,4 14,6914 a75,0 d260 363 7 15,8215 75,0 d280 d416 7,4 16,9516 75,0 d280 d474 8 18,0817 a75,0 d280 d535 8,8 19,2118 280 d599 9,6 20,3419 a 280 d650 d 10,2 21,4720 a 280 d650 d 10,7 22,621 280 d650 d1 816 11,2 23,7322 a 280 d650 d1 979 11,8 24,8623 a 280 d650 d2 148 12,3 25,99
37、24 280 d650 d2 200 d 12,8 27,1225 a 280 d650 d2 200 d 13,3 28,2527 650 d2 200 d3 654 14,4 30,5130 650 d2 200 d4 000 d 16 33,9032 a 650 d2 200 d4 000 d 16,8 36,1634 650 d2 200 d4 000 d 17,6 38,4236 2 200 d4 000 d10 368 19,2 40,6841 2 200 d4 000 d12 601 21,6 46,3346 2 200 d4 000 d14 975 24 51,9850 2 2
38、00 d4 000 d15 100 d26,4 56,5055 2 200 d4 000 d15 100 d28,8 62,15aNot according to ISO 272.bHexagons larger than tabled sizes are required to pass the highest tabled test torsion torque value shown for the applicable driving square.cIn accordance with ISO 1174-2.dThe test torsion torque values have b
39、een limited due to the strength of the driving square for that hexagon size.eemin= snom 1,13 values of eminare rounded with two decimals.4 ISO 2016 All rights reservedBS ISO 1711-2:2016ISO 1711-2:2016(E)Nominal width across flats sMinimum test torsion torque bM NmTest mandrel mmDriving square nomina
40、l sizecHeight h h13Width across corners eemin6,3 10 12,5 20 25 4060 2 200 d4 000 d15 100 d31,2 67, 8065 4 000 d15 100 d33,6 73,4570 4 000 d15 100 d36 79,10aNot according to ISO 272.bHexagons larger than tabled sizes are required to pass the highest tabled test torsion torque value shown for the appl
41、icable driving square.cIn accordance with ISO 1174-2.dThe test torsion torque values have been limited due to the strength of the driving square for that hexagon size.eemin= snom 1,13 values of eminare rounded with two decimals.Table 3 (continued) ISO 2016 All rights reserved 5BS ISO 1711-2:2016ISO
42、1711-2:2016(E)Bibliography1 ISO 272, Fasteners Hexagon products Widths across flats2 ISO 1174-2, Assembly tools for screws and nuts Driving squares Part 2: Driving squares for power socket tools3 ISO 1703, Assembly tools for screws and nuts Designation and nomenclature4 ISO 2725-2, Assembly tools fo
43、r screws and nuts Square drive sockets Part 2: Machine-operated sockets (”impact”)6 ISO 2016 All rights reservedBS ISO 1711-2:2016BS ISO 1711-2:2016ISO 1711-2:2016(E) ISO 2016 All rights reservedICS 25.140.01Price based on 6 pagesThis page deliberately left blankBSI is the national body responsible
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