1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 2009:2011Slotted countersunk flat headscrews Product grade A (ISO2009:2011)BS EN ISO 2009:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implemen
2、tation of EN ISO 2009:2011. It supersedes BS EN ISO 2009:1995 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee FME/9/3, Fasteners - Product Standards.A list of organizations represented on this committee can be obtained on request to its secretary.This
3、publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 72973 7ICS 21.060.10Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under
4、 the authority of the Standards Policy and Strategy Committee on 30 September 2011.Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2009 September 2011 ICS 21.060.10 Supersedes EN ISO 2009:1994English Version Slotted countersunk
5、flat head screws - Product grade A (ISO 2009:2011) Vis mtaux tte fraise fendue - Grade A (ISO 2009:2011) Senkschrauben mit Schlitz - Produktklasse A (ISO 2009:2011) This European Standard was approved by CEN on 8 August 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations
6、which stipulate the conditions for 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
7、 European Standard exists in three 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 membe
8、rs are the national standards bodies 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,
9、Sweden, Switzerland and United Kingdom. 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 Membe
10、rs. Ref. No. EN ISO 2009:2011: EBS EN ISO 2009:2011EN ISO 2009:2011 (E) 3 Foreword This document (EN ISO 2009:2011) 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 St
11、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2012, and conflicting national standards shall be withdrawn at the latest by March 2012. Attention is drawn to the possibility that some of the elements of th
12、is document may be the subject 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 2009:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countri
13、es are bound to implement 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, Sloveni
14、a, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 2009:2011 has been approved by CEN as a EN ISO 2009:2011 without any modification. BS EN ISO 2009:2011ISO 2009:2011(E) ISO 2011 All rights reserved iiiForeword ISO (the International Organization for Standardiza
15、tion) 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 technical committee has been established has the right to be
16、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 electrotechnical standardization. International Standard
17、s 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 Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Interna
18、tional 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 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 2009 was
19、prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 11, Fasteners with metric external thread. This fourth edition cancels and replaces the third edition (ISO 2009:1994), of which it constitutes a minor revision. BS EN ISO 2009:2011BS EN ISO 2009:2011INTERNATIONAL STANDARD ISO 2009:
20、2011(E) ISO 2011 All rights reserved 1Slotted countersunk flat head screws Product grade A 1 Scope This International Standard specifies the characteristics of slotted countersunk flat head screws of product grade A and with threads from M1,6 to M10 inclusive. If, in special cases, specifications ot
21、her than those listed in this International Standard are required, they can be selected from existing International Standards, for example ISO 261, ISO 888, ISO 898-1, ISO 965-2 and ISO 3506-1. 2 Normative references The following referenced documents are indispensable for the application of this do
22、cument. For dated references, only the 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 descriptions of dimensions ISO 261, ISO general purpose metric screw th
23、reads General plan ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and fine pitch thread ISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general
24、 purpose external and internal screw threads Medium quality ISO 3269, Fasteners Acceptance inspection ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs ISO 4042, Fasteners Electroplated coatings ISO 4759-1, Tolerances for fasteners Par
25、t 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 6157-1, Fasteners Surface discontinuities Part 1: Bolts, screws and studs for general requirements ISO 8839, Mechanical properties of fasteners Bolts, screws, studs and nuts made of non-ferrous metals ISO 8992, Fasteners General requir
26、ements 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 2009:2011ISO 2009:2011(E) 2 ISO 2011 All rights reserved3 Dimensions See Figure 1 and Table 1. Symbols and
27、descriptions of dimensions are specified in ISO 225. The shank diameter is approximately equal to the pitch diameter or equal to the permissible major thread diameter. Key 1 as-rolled end 2 edge (rounded or flat) Figure 1 BS EN ISO 2009:2011ISO 2009:2011(E) ISO 2011 All rights reserved 3Table 1 Dime
28、nsions Dimensions in millimetres Thread, d M1,6 M2 M2,5 M3 (M3,5)aM4 M5 M6 M8 M10 Pb0,35 0,4 0,45 0,5 0,6 0,7 0,8 1 1,25 1,5 a max. 0,7 0,8 0,9 1 1,2 1,4 1,6 2 2,5 3 b min. 25 25 25 25 38 38 38 38 38 38 Theoretical max. 3,6 4,4 5,5 6,3 8,2 9,4 10,4 12,6 17,3 20 nom. = max. 3,0 3,8 4,7 5,5 7,30 8,40
29、9,30 11,30 15,80 18,30 dkcActual min. 2,7 3,5 4,4 5,2 6,94 8,04 8,94 10,87 15,37 17,78 kcnom. = max. 1 1,2 1,5 1,65 2,35 2,7 2,7 3,3 4,65 5 nom. 0,4 0,5 0,6 0,8 1 1,2 1,2 1,6 2 2,5 max. 0,60 0,70 0,80 1,00 1,20 1,51 1,51 1,91 2,31 2,81 n min. 0,46 0,56 0,66 0,86 1,06 1,26 1,26 1,66 2,06 2,56 r max.
30、0,4 0,5 0,6 0,8 0,9 1 1,3 1,5 2 2,5 max. 0,50 0,6 0,75 0,85 1,2 1,3 1,4 1,6 2,3 2,6 t min. 0,32 0,4 0,50 0,60 0,9 1,0 1,1 1,2 1,8 2,0 x max. 0,9 1 1,1 1,25 1,5 1,75 2 2,5 3,2 3,8 ladnom. min. max. Approximate mass, in kilograms per 1 000 pieces ( = 7,85 kg/dm3) (for information only) 2,5 2,3 2,7 0,0
31、53 3 2,8 3,2 0,058 0,101 4 3,76 4,24 0,069 0,119 0,206 5 4,76 5,24 0,081 0,137 0,236 0,335 6 5,76 6,24 0,093 0,152 0,266 0,379 0,633 0,903 8 7,71 8,29 0,116 0,193 0,326 0,467 0,753 1,06 1,48 2,38 10 9,71 10,29 0,139 0,231 0,386 0,555 0,873 1,22 1,72 2,73 5,68 12 11,65 12,35 0,162 0,268 0,446 0,643 0
32、,933 1,37 1,96 3,08 6,32 9,54 (14) 13,65 14,35 0,185 0,306 0,507 0,731 1,11 1,53 2,2 3,43 6,96 10,6 16 15,65 16,35 0,208 0,343 0,567 0,82 1,23 1,68 2,44 3,78 7,6 11,6 20 19,58 20,42 0,417 0,687 0,996 1,47 2 2,92 4,48 8,88 13,6 25 24,58 25,42 0,838 1,22 1,77 2,39 3,52 5,36 10,5 16,1 30 29,58 30,42 1,
33、44 2,07 2,78 4,12 6,23 12,1 18,7 35 34,5 35,5 2,37 3,17 4,72 7,11 13,7 21,2 40 39,5 40,5 3,56 5,32 7,98 15,3 23,7 45 44,5 45,5 5,92 8,86 16,9 26,2 50 49,5 50,5 6,52 9,73 18,5 28,8 BS EN ISO 2009:2011ISO 2009:2011(E) 4 ISO 2011 All rights reservedTable 1 (continued) Dimensions in millimetres Thread,
34、d M1,6 M2 M2,5 M3 (M3,5)aM4 M5 M6 M8 M10 ladnom. min. max. Approximate mass, in kilograms per 1 000 pieces ( = 7,85 kg/dm3) (for information only) (55) 54,05 55,95 10,6 20,1 31,3 60 59,05 60,95 11,5 21,7 33,8 (65) 64,05 65,95 23,3 36,3 70 69,05 70,95 24,9 38,9 (75) 74,05 75,95 26,5 41,4 80 79,05 80,
35、95 28,1 43,9 NOTE Preferred lengths are those between the solid, bold, stepped lines. aSizes in parentheses should be avoided if possible. bP is the pitch of the thread. cSee ISO 7721. dScrews with nominal lengths above the bold, discontinuous line are threaded up to the head; b = l (k + a). BS EN I
36、SO 2009:2011ISO 2009:2011(E) ISO 2011 All rights reserved 54 Specifications and reference International Standards See Table 2. Table 2 Specifications and reference International Standards Material Steel Stainless steel Non-ferrous metal General requirements International Standard ISO 8992 Tolerance
37、class 6g Thread International Standard ISO 261, ISO 965-2 Property class 4.8, 5.8 A2-50, A2-70 Mechanical property International Standard ISO 898-1 ISO 3506-1 ISO 8839 Product grade A Tolerance International Standard ISO 4759-1 As processed Requirements for electroplating are specified in ISO 4042.
38、Requirements for non-electrolytically applied zinc flake coatings are specified in ISO 10683. Requirements for passivation are specified in ISO 16048. Requirements for electroplating are specified in ISO 4042. Finish Coating Additional requirements or other finishes or coatings shall be agreed betwe
39、en the supplier and the purchaser. Surface integrity Limits for surface discontinuities are specified in ISO 6157-1. Acceptability Acceptance inspection is specified in ISO 3269. 5 Designation EXAMPLE A slotted countersunk flat head screw with thread M5, nominal length l = 20 mm and property class 4
40、.8 is designated as follows: Countersunk flat head screw ISO 2009 - M5 20 - 4.8 BS EN ISO 2009:2011ISO 2009:2011(E) 6 ISO 2011 All rights reservedBibliography 1 ISO 888, Bolts, screws and studs Nominal lengths, and thread lengths for general purpose bolts 2 ISO 7721, Countersunk head screws Head con
41、figuration and gauging BS EN ISO 2009:2011This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standardsand other standards-related publications, information and services. It presents the UK view on standards in Euro
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