1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 7053:2011Hexagon washer head tapping screws (ISO 7053:2011)BS EN ISO 7053:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO
2、 7053:2011. It supersedes BS 7599:1992, which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e F M E / 9 / 3 , F a s t e n e r s - P r o d u c t S t a n d a r d s .A list of organizations represented on this committee can be obtained on reques
3、t to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 68780 8 ICS 21.060.10 Compliance with a British Standard cannot confer immunity from legal obligations.This British S
4、tandard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2011.Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7053 August 2011 ICS 21.060.10 English Version Hexagon washer head tappin
5、g screws (ISO 7053:2011) Vis tle tte hexagonale embase plate (ISO 7053:2011) Sechskant-Blechschrauben mit Bund (ISO 7053:2011) This European Standard was approved by CEN on 1 July 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin
6、g 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 three offic
7、ial 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 bodies of
8、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 Kingdom.
9、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 7053:2011: EBS EN IS
10、O 7053:2011 EN ISO 7053:2011 (E) 3 Foreword This document (EN ISO 7053:2011) 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 status of a n
11、ational standard, either by publication of an identical text or by endorsement, at the latest by February 2012, and conflicting national standards shall be withdrawn at the latest by February 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of
12、 patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria
13、, 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 the United Kingdom. Endorsement notice The
14、 text of ISO 7053:2011 has been approved by CEN as a EN ISO 7053:2011 without any modification. BS EN ISO 7053:2011ISO 7053:2011(E) ISO 2011 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bod
15、ies). 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
16、 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 accordance with the rules given in the ISO/IEC Directives,
17、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 requires approval by at least 75 % of the member bodies cast
18、ing 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 7053 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 13, Fas
19、teners with non-metric thread. This second edition cancels and replaces the first edition (ISO 7053:1992), which has been technically revised. BS EN ISO 7053:2011BS EN ISO 7053:2011INTERNATIONAL STANDARD ISO 7053:2011(E) ISO 2011 All rights reserved 1Hexagon washer head tapping screws 1 Scope This I
20、nternational Standard specifies hexagon washer head tapping screws with thread sizes from ST 2,2 to ST 8 inclusive. 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 refe
21、rences, the latest edition of the referenced document (including any amendments) applies. ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and descriptions of dimensions ISO 1478, Tapping screws thread ISO 2702, Heat-treated steel tapping screws Mechanical properties ISO 3269, Fasteners Acce
22、ptance inspection ISO 3506-4, Mechanical properties of corrosion-resistant stainless steel fasteners Part 4: Tapping screws ISO 4042, Fasteners Electroplated coatings ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 8992, Fasteners General requ
23、irements for bolts, screws, studs and nuts ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings ISO 16048, Passivation of corrosion-resistant stainless-steel fasteners BS EN ISO 7053:2011ISO 7053:2011(E) 2 ISO 2011 All rights reserved3 Dimensions See Figure 1 and Table 1. Symbols an
24、d descriptions of dimensions are specified in ISO 225. a) Type C b) Type F c) Type R aOptional indentation. bDimension a shall be measured at the core diameter of the first full thread. Figure 1 Hexagon washer head tapping screws BS EN ISO 7053:2011ISO 7053:2011(E) ISO 2011 All rights reserved 3Tabl
25、e 1 Dimensions Dimensions in millimetres Thread ST 2,2 ST 2,9 ST 3,5 ST 3,9 ST 4,2 ST 4,8 ST 5,5 ST 6,3 ST 8 Pa0,8 1,1 1,3 1,3 1,4 1,6 1,8 1,8 2,1 a max. 0,8 1,1 1,3 1,3 1,4 1,6 1,8 1,8 2,1 c min. 0,25 0,40 0,60 0,60 0,80 0,90 1,00 1,00 1,20 damax. 2,8 3,5 4,1 4,6 4,9 5,6 6,3 7,3 9,2 max. 4,2 6,3 8,
26、3 8,3 8,8 10,5 11,0 13,5 18,0 dcmin. 3,8 5,8 7,6 7,6 8,1 9,8 10,0 12,2 16,7 nom. = max. 3,00 4,00 5,50 5,50 7,00 8,00 8,00 10,00 13,00 s min. 2,86 3,82 5,32 5,32 6,78 7,78 7,78 9,78 12,73 e min. 3,20 4,28 5,96 5,96 7,59 8,71 8,71 10,95 14,26 nom. = max. 2,0 2,8 3,4 3,4 4,1 4,3 5,4 5,9 7,0 k min. 1,7
27、 2,5 3,0 3,0 3,6 3,8 4,8 5,3 6,4 kwmin. 0,9 1,3 1,5 1,5 1,8 2,2 2,7 3,1 3,3 r min. 0,3 0,4 0,5 0,5 0,6 0,7 0,8 0,9 1,1 r2max. 0,15 0,20 0,25 0,25 0,30 0,30 0,40 0,50 0,60 Type C 2,0 2,6 3,2 3,5 3,7 4,3 5,0 6,0 7,5 Type F 1,6 2,1 2,5 2,7 2,8 3,2 3,6 3,6 4,2 y ref. Type R 2,7 3,0 3,2 3,6 4,3 5,0 6,3 l
28、bType C and Type R Type F nom. min. max. min. max. Approximate mass, in kilograms per 1 000 pieces ( = 7,85 kg/dm3) (for information only) 4,5 3,7 5,3 3,7 4,5 0,17 6,5 5,7 7,3 5,7 6,5 0,21 0,43 0,93 9,5 8,7 10,3 8,7 9,5 0,27 0,54 1,10 1,14 1,84 2,48 13 12,2 13,8 12,2 13,0 0,35 0,66 1,28 1,35 2,09 2,
29、80 3,64 5,44 16 15,2 16,8 15,2 16,0 0,41 0,77 1,44 1,54 2,31 3,10 4,01 5,96 10,90 19 18,2 19,8 18,2 19,0 0,47 0,87 1,59 1,73 2,52 3,39 4,40 6,49 11,80 22 21,2 22,8 20,7 22,0 1,74 1,93 2,74 3,68 4,78 7,01 12,70 25 24,2 25,8 23,7 25,0 2,12 2,95 3,97 5,17 7,54 13,60 32 30,7 33,3 30,7 32,0 4,66 6,06 8,7
30、6 15,70 38 36,7 39,3 36,7 38,0 6,82 9,82 17,50 45 43,7 46,3 43,5 45,0 11,10 19,60 50 48,7 51,3 48,5 50,0 12,00 21,10 NOTE Preferred lengths are those between the continuous, bold, stepped lines. aP = pitch of the thread. bSizes with lengths marked with a dash () cannot be manufactured. BS EN ISO 705
31、3:2011ISO 7053:2011(E) 4 ISO 2011 All rights reserved4 Specifications and reference International Standards See Table 2. Table 2 Specifications and reference International Standards Material Steel, in accordance with ISO 2702 Stainless steel General requirements ISO 8992 Thread ISO 1478 Steel grade/
32、 hardness class A2-20H, A4-20H, A5-20H Mechanical propertyInternational Standard ISO 2702 ISO 3506-4 Product grade A Tolerances International Standard ISO 4759-1 As processed Finish Coating Requirements for electroplating are specified in ISO 4042. Requirements for non-electrolytically applied zinc
33、flake coatings are specified in ISO 10683. Additional requirements or other finishes or coatings shall be agreed between the supplier and the purchaser. Requirements for passivation are specified in ISO 16048. Acceptability Acceptance inspection is specified ISO 3269. 5 Designation EXAMPLE 1 A hexag
34、on washer head tapping screw with thread size ST 3,5, nominal length l = 16 mm, made of steel (St) in accordance with ISO 2702 and rounded end (Type R) is designated as follows: Tapping screw ISO 7053 - ST 3,5 16 - St - R EXAMPLE 2 Designation of a hexagon washer head tapping screw with thread size
35、ST 3,5, nominal length l = 16 mm, made of stainless steel (A4-20H) in accordance with ISO 3506-4 and rounded end (Type R) is designated as follows: Tapping screw ISO 7053 - ST 3,5 16 - A4-20H - R BS EN ISO 7053:2011This page deliberately left blankThis page deliberately left blankBSI is the independ
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