1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-20974-2 SANS 1700-9-4:2008Edition 2ISO 10642:2004Edition 2SOUTH AFRICAN NATIONAL STANDARD Fasteners Part 9: Hexagon socket head screws Sec
4、tion 4: Hexagon socket countersunk head screws This national standard is the identical implementation of ISO 10642:2004 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria
5、 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 1700-9-4:2008 Edition 2 ISO 10642:2004 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee StanSA TC 5120.01
6、, Screw threads and fasteners, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in April 2008. This SANS document supersedes SANS 1700-9-4:1998 (edition 1). INTERNATIONALSTANDARDISO10642Second edition2004-0
7、3-01Reference numberISO 10642:2004(E) ISO 2004Hexagon socket countersunk head screwsVis tte fraise six pans creuxSANS 1700-9-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 10642:2004(E)ii ISO 2004 All rights reservedPDF disclaimerT
8、his PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shallnot be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. Indownloading this file, parties accept the
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11、Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below orISOs member body in the country of the requester.ISO
12、copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandSANS 1700-9-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 10642:2004(E) ISO
13、2004 All rights reserved iiiContents Page1 Scope 12 Normative references 13 Dimensions and gauging of head 24 Requirements and reference International Standards . 65 Designation 7SANS 1700-9-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SAB
14、S .ISO 10642:2004(E)iv ISO 2004 All rights reservedForewordISO (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 ISOtechnical committees. Each m
15、ember body interested in a subject for which a technical committee has beenestablished has the right to be represented on that committee. International organizations, governmental andnon-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the InternationalEle
16、ctrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standardsadopted
17、 by the technical committees are circulated to the member bodies for voting. Publication as anInternational Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrig
18、hts. ISO shall not be held responsible for identifying any or all such patent rights.ISO 10642 was prepared by Technical Committee ISO/TC 2, Fasteners.This second edition cancels and replaces the first edition (ISO 10642:1997), which has been technicallyrevised.SANS 1700-9-4:2008This s tandard may o
19、nly be used and printed by approved subscription and freemailing clients of the SABS .INTERNATIONAL STANDARD ISO 10642:2004(E) ISO 2004 All rights reserved 1Hexagon socket countersunk head screws1ScopeThis International Standard specifies the characteristics of hexagon socket countersunk head screws
20、 withthreads from M3 up to and including M20, with product grade A and property classes 8.8, 10.9 and 12.9.NOTE Particular attention is drawn to the note in Table 2 and to Table 3, concerning the limitation on ultimate tensile load.If, in special cases, specifications other than those listed in this
21、 International Standard are required, they shouldbe selected from existing International Standards,e.g. ISO 261, ISO 888, ISO 898-1, ISO 965-2 andISO 4759-1.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the
22、edition cited applies. For undated references, the latest edition of the referenced document(including any amendments) applies.ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and designations of dimensionsISO 261, ISO general-purpose metric screw threads General planISO 888, Bolts, screws a
23、nd studs Nominal lengths, and thread lengths for general purpose boltsISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws andstudsISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for generalpurpose external an
24、d internal screw threads Medium qualityISO 965-3, ISO general purpose metric screw threads Tolerances Part 3: Deviations for constructionalscrew threadsISO 3269, Fasteners Acceptance inspectionISO 4042, Fasteners Electroplated coatingsISO 4753, Fasteners Ends of parts with external ISO metric thread
25、ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and CISO 6157-1, Fasteners Surface discontinuities Part 1: Bolts, screws and studs for general requirementsISO 6157-3, Fasteners Surface discontinuities Part 3: Bolts, screws and studs for special requirem
26、entsISO 8992, Fasteners General requirements for bolts, screws, studs and nutsISO 10683, Fasteners Non-electrolytically applied zinc flake coatingsISO 23429, Gauging of hexagon socketsSANS 1700-9-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of th
27、e SABS .ISO 10642:2004(E)2 ISO 2004 All rights reserved3 Dimensions and gauging of head3.1 DimensionsSee Figure 1 and Table 1.Symbols and designations of dimensions are defined in ISO 225.Permissible alternative form of socketFigure 1 Hexagon socket countersunk head screwsSANS 1700-9-4:2008This s ta
28、ndard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 10642:2004(E) ISO 2004 All rights reserved 33.2 Gauging of headSee Figure 2.The top surface of the screw shall be located between the gauge surfaces A and B.For broached sockets which are at the maxi
29、mum limitof size the overcut resulting from drilling shall notexceed 1/3 of the length of any flat of the socket whichis .aA slight rounding or countersink at the mouth of the socket is permissible.bPoint to be chamfered or, for sizes M4 and below, “as rolled” in accordance with ISO 4753.cEdge of th
30、e head to be truncated or rounded.d .eIncomplete thread .fapplies if values of are specified.Tolerances in millimetresa(see Table 1).bis the Flushness tolerance of the head (see Table 1).Figure 2 Flushness gaugeFigure 1 Hexagon socket countersunk head screws (continued)e/2 = 9092u lessorequalslant 2
31、 Pdsls, minD = dk, theor., maxFSANS 1700-9-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 10642:2004(E)4 ISO 2004 All rights reservedTable1DimensionsDimensionsin millimetresThread()M3M4M5M6M8M10M12(M14)gM16M20a0,50,70,811,251,51,75
32、222,5bref.18202224283236404452max.3,34,45,56,68,5410,6213,515,517,522theor.max.6,728,9611,2013,4417,9222,4026,8830,833,6040,32actualmin.5,547,539,4311,3415,2419,2223,1226,5229,0136,05max.3,004,005,006,008,0010,0012,0014,0016,0020,00min.2,863,824,825,827,789,7811,7313,7315,7319,67c,dmin.2,3032,8733,4
33、434,5835,7236,8639,14911,42911.42913,716max.1,862,483,13,724,966,27,448,48,810,16emax.0,250,250,30,350,40,40,450,50,60,75min.0,10,20,20,250,40,40,60,60,60,8dnom.22,534568101012max.2,082,583,084,0955,146,1408,17510,17510,17512,212min.2,022,523,024,0205,026,0208,02510,02510,02512,032min.1,11,51,92,233
34、,64,34,54,85,6min.0,250,450,660,71,161,621,81,622,22,2fShank length and grip length nom.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.87,718,29109,7110,291211,6512,351615,6516,352019,5820,422524,5825,423029,5830,429,5126,5103534,535,511,5159134039,540,516,52
35、0141811164544,545,5192316215049,550,52428212615,75225554,455,6263120,752715,523dPb dadkdsekFrstwllslglslglslglslglslglslglslglslglslglslglslgSANS 1700-9-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 10642:2004(E) ISO 2004 All righ
36、ts reserved 56059,460,6313625,753220,5286564,465,630,753725,53320,25297069,470,635,754230,53825,253420308079,480,645,755240,54835,2544304026369089,390,750,55845,25544050364610099,3100,760,56855,25645060465635,548aisthe pitch ofthe thread.bForlengthsbetween the bold stepped lines in the unshaded area
37、.c.dCombined gauging ofsocketdimensions and ,see ISO23429.eis theflushness ofthe head,see Figure2.The gauge dimension hasthe tolerance .fThe range ofcommercial lengths is between thebold stepped lines.Lengthsin the shaded area are threaded to the headwithin .Lengths belowthe shaded area have valueso
38、fandin accordance with the following formulae:gThe size in bracketsshould be avoidedifpossible.Table1Dimensions(continued)P emin=1,14sminesFF00,013Plglslg,max=lnombls,min=lg,max5PSANS 1700-9-4:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SAB
39、S .ISO 10642:2004(E)6 ISO 2004 All rights reserved4 Requirements and reference International StandardsSee Tables 2 and 3.Table 2 Requirements and reference International StandardsMaterial SteelGeneral requirements International Standard ISO 8992ThreadTolerance6g for property classes 8.8 and 10.9;5g6
40、g for property class 12.9International Standards ISO 261, ISO 965-2, ISO 965-3Mechanical propertiesProperty classa8.8, 10.9, 12.9International Standard ISO 898-1TolerancesProduct grade AInternational Standard ISO 4759-1FinishAs processed.Requirements for electroplating are covered in ISO 4042.Requir
41、ements for non-electrolytically applied zinc flakecoatings are covered in ISO 10683.Surface discontinuitiesLimits for surface discontinuities are given in ISO 6157-1and ISO 6157-3 for property class 12.9.Acceptability Acceptance procedure is covered in ISO 3269.aBecause of their head configurations,
42、 these screws may not meet the minimum ultimate tensile load for property classes 8.8, 10.9 and12.9, specified in ISO 898-1, when tested in accordance with test programme B. They shall nevertheless meet the other material andproperty requirements for property classes 8.8, 10.9 and 12.9 specified in
43、ISO 898-1. In addition, when full-size screws are loaded with thehead supported on a suitable collar (conical bearing surface) using the type of testing fixture illustrated in ISO 898-1, they shall withstand,without fracture, the minimum ultimate tensile loads given in Table 3. If tested to failure,
44、 the fracture may occur in the threaded section, thehead, the shank or at the head/shank junction.Table 3 Minimum ultimate tensile loads for hexagon socket countersunk head screws( of the values specified in ISO 898-1)Thread ( )Property class8.8 10.9 12.9Minimum ultimate tensile loadNM3 3220 4180 41
45、90M4 5620 7300 8560M5 9 080 11 800 13 800M6 12 900 16 700 19 600M8 23 400 30 500 35 700M10 37 100 48 200 56 600M12 53 900 70 200 82 400M14 73 600 96 000 112 000M16 100 000 130 000 154 000M20 162 000 204 000 239 00080 %dSANS 1700-9-4:2008This s tandard may only be used and printed by approved subscri
46、ption and freemailing clients of the SABS .ISO 10642:2004(E) ISO 2004 All rights reserved 75 DesignationEXAMPLE A hexagon socket countersunk head screw with thread M12 nominal length and property class 12.9is designated as follows:Hexagon socket countersunk head screw ISO 10642-M12 40-12.9l = 40 mmSANS 1700-9-4:2008 Standards South AfricaThis s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .
