1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 10510:2011Tapping screw and washerassemblies with plain washersBS EN ISO 10510:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of E
2、N ISO10510:2011. It supersedes BS EN ISO 10510:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee FME/9/3, Fasteners - Product Standards.A list of organizations represented on this committee can beobtained on request to its secretary.This publication
3、does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 71500 6ICS 21.060.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority
4、of theStandards Policy and Strategy Committee on 30 April 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10510 April 2011 ICS 21.060.10 Supersedes EN ISO 10510:1999English Version Tapping screw and washer assemblies with plain washe
5、rs (ISO 10510:2011) Vis tle rondelle plate imperdable (ISO 10510:2011) Kombi-Blechschrauben mit flachen Scheiben (ISO 10510:2011) This European Standard was approved by CEN on 17 January 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions fo
6、r giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in thre
7、e official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bod
8、ies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Ki
9、ngdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10510:2011: E
10、BS EN ISO 10510:2011EN ISO 10510:2011 (E) 3 Foreword This document (EN ISO 10510:2011) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ in collaboration with Technical Committee CEN/TC 185 “Fasteners” the secretariat of which is held by DIN. This European Standard shall be given the sta
11、tus of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the latest by October 2011. Attention is drawn to the possibility that some of the elements of this document may be the su
12、bject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 10510:1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implemen
13、t this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switze
14、rland and the United Kingdom. Endorsement notice The text of ISO 10510:2011 has been approved by CEN as a EN ISO 10510:2011 without any modification. BS EN ISO 10510:2011ISO 10510:2011(E) ISO 2011 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide
15、 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 technical committee has been established has the right to be represented on that
16、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 electrotechnical standardization. International Standards are drafted in acc
17、ordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requ
18、ires 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 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10510 was prepared by Technic
19、al Committee ISO/TC 2, Fasteners, Subcommittee SC 10, Product standards for fasteners. This second edition cancels and replaces the first edition (ISO 10510:1999), of which it constitutes a minor revision. BS EN ISO 10510:2011BS EN ISO 10510:2011INTERNATIONAL STANDARD ISO 10510:2011(E) ISO 2011 All
20、rights reserved 1Tapping screw and washer assemblies with plain washers 1 Scope This International Standard specifies the requirements for tapping screws and plain washer assemblies with thread sizes from ST2,2 to ST9,5 inclusive, flat seating heads and mechanical properties as specified in ISO 2702
21、. The plain washers are captive, i.e. prevented from disassembly and free to rotate. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of t
22、he referenced document (including any amendments) applies. ISO 1478, Tapping screws thread ISO 1479, Hexagon head tapping screws ISO 1481, Slotted pan head tapping screws ISO 2702, Heat-treated steel tapping screws Mechanical properties ISO 6507-1, Metallic materials Vickers hardness test Part 1: Te
23、st method ISO 7049, Cross-recessed pan head tapping screws ISO 10669, Plain washers for tapping screw and washer assemblies Normal and large series Product grade A 3 Dimensions The dimensions of the assembled screws shall conform to the designated product standards for loose parts with the following
24、 exceptions: screws shall have a shank of such diameter, ds, that the washer with dimensions in accordance with ISO 10669 is free to rotate; the permitted distance from the underside of the head to the first full thread shall be increased by the maximum thickness of the washer as specified in ISO 10
25、669; the transition diameter, da, shall be reduced by the difference between the nominal and thread rolling diameter. For the dimensions, see Figures 1 to 4 and Table 1. BS EN ISO 10510:2011ISO 10510:2011(E) 2 ISO 2011 All rights reservedFigure 1 Hexagon head tapping screw, for example with cone end
26、 (type C) Figure 2 Cross-recessed pan head tapping screw, for example with flat end (type F) Figure 3 Slotted pan head tapping screw, for example with rounded end (type R) Figure 4 Transition diameter, da, and shank diameter, ds BS EN ISO 10510:2011ISO 10510:2011(E) ISO 2011 All rights reserved 3Tab
27、le 1 Dimensions Dimensions in millimetres Washer dimensionsaNormal series Type N Large series Type L Thread size ab max. damax. h nom. d2max. h nom. d2max. ST2,2 ST2,9 ST3,5 0,8 1,1 1,3 2,1 2,8 3,3 1 1 1 5 7 8 1 1 1 7 9 11 ST4,2 ST4,8 ST5,5 1,4 1,6 1,8 4,03 4,54 5,22 1 1 1,6 9 10 12 1 1,6 1,6 12 15
28、15 ST6,3 ST8 ST9,5 1,8 2,1 2,1 5,93 7,76 9,43 1,6 1,6 2,0 14 16 20 1,6 2 2,5 18 24 30 aDimensions extracted from ISO 10669, for information only. bDimension a measured after assembly, with washer in contact with the screw bearing face or underhead radius.4 Specifications and reference standards The
29、mechanical properties of the screw component of the tapping screw and washer assembly shall be those specified in ISO 2702. Following assembly and heat treatment, the washer component shall have a hardness of 90 HV to 320 HV. Vickers hardness testing shall be carried out in accordance with ISO 6507-
30、1. Test force: HV 10 for nominal thickness h u 1,2 mm Test force: HV 30 for nominal thickness h 1,2 mm Prior to assembly, suitable precautions shall be taken to prevent detrimental case hardening of the washer during heat treatment, e.g. copper plating. 5 Designation The designation of a tapping scr
31、ew and washer assembly shall consist of: a) the description of the components; b) the reference to this International Standard, i.e. ISO 10510; c) the thread size and nominal length of the tapping screw; d) the type of thread end in accordance with ISO 1478; e) the screw symbol specifying the type o
32、f screw (see Table 2); f) the washer symbol specifying the type of washer (see Table 3). BS EN ISO 10510:2011ISO 10510:2011(E) 4 ISO 2011 All rights reservedTable 2 Symbols for the screws Reference International Standard Symbol ISO 1479 Hexagon head tapping screws S1 ISO 7049 Cross recessed pan head
33、 tapping screws S2 ISO 1481 Slotted pan head tapping screws S3 Table 3 Symbols for the washers Reference International Standard Type of washer Symbol Normal N ISO 10669 Plain washers for tapping screw and washer assemblies Large L EXAMPLE 1 A hexagon head tapping screw and washer assembly with a scr
34、ew size of ST4,2 16, with rounded end (R) in accordance with ISO 1478, screw type in accordance with ISO 1479 (symbol S1), and a plain washer, normal series, in accordance with ISO 10669 (symbol N) is designated as follows: Tapping screw and washer assembly ISO 10510 ST4,2 16 R S1 N EXAMPLE 2 A cros
35、s-recessed pan head tapping screw and washer assembly with a screw size of ST 4,2 16, with rounded end (R) in accordance with ISO 1478, screw type with cross recess type Z in accordance with ISO 7049 (symbol S2) and a plain washer, normal series, according to ISO 10669 (symbol N) is designated as fo
36、llows: Tapping screw and washer assembly ISO 10510 ST4,2 16 R Z S2 N BS EN ISO 10510:2011This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standardsand other standards-related publications, information and service
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