1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 7045:2011Pan head screws with type H ortype Z cross recess Productgrade A (ISO 7045:2011)BS EN ISO 7045:2011 BRITISH STANDARDNational forewordThis British Standard is t
2、he UK implementation of EN ISO 7045:2011. It supersedes BS EN ISO 7045:1995 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee FME/9/3, Fasteners - Product Standards.A list of organizations represented on this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 s
3、ecretary.This 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 72975 1ICS 21.060.10Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was p
4、ublished under 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 7045 September 2011 ICS 21.060.10 Supersedes EN ISO 7045:1994English Version Pan he
5、ad screws with type H or type Z cross recess - Product grade A (ISO 7045:2011) Vis mtaux tte cylindrique bombe large empreinte cruciforme de type H ou de type Z - Grade A (ISO 7045:2011) Flachkopfschrauben mit Kreuzschlitz Form H oder Form Z -Produktklasse A (ISO 7045:2011) This European Standard wa
6、s approved by CEN on 8 August 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations 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 nat
7、ional standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This 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 lang
8、uage and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
9、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Bruss
10、els 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 7045:2011: EBS EN ISO 7045:2011EN ISO 7045:2011 (E) 3 Foreword This document (EN ISO 7045:2011) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ in collabora
11、tion 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 national standard, either by publication of an identical text or by endorsement, at the latest by March 2012, and conflicting national standards shall b
12、e withdrawn at the latest by March 2012. Attention is drawn to the possibility that some of the elements of this 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 7045:1994. Ac
13、cording to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
14、Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 7045:2011 has been approved by CEN as a EN ISO 7045:2011 without any modification. BS EN ISO 7045:201
15、1ISO 7045:2011(E) ISO 2011 All rights reserved iiiForeword ISO (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
16、 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 non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Internationa
17、l Electrotechnical 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 Standards
18、 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 casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of
19、 patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 7045 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 11, Fasteners with metric external thread. This third edition cancels and replaces the second edition (ISO 7045:1994), of
20、 which it constitutes a minor revision. BS EN ISO 7045:2011BS EN ISO 7045:2011INTERNATIONAL STANDARD ISO 7045:2011(E) ISO 2011 All rights reserved 1Pan head screws with type H or type Z cross recess Product grade A 1 Scope This International Standard specifies the characteristics of pan head screws
21、of product grade A, with threads from M1,6 to M10 inclusive, and with type H or type Z cross recess. If, in special cases, specifications other than those listed in this International Standard are required, they can be selected from existing International Standards, for example ISO 261, ISO 888, ISO
22、 898-1, ISO 965-2 and ISO 3506-1. 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 the referenced document (including any amendments) a
23、pplies. ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and descriptions of dimensions ISO 261, ISO general purpose metric screw threads 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 cl
24、asses Coarse thread and fine pitch thread ISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general purpose external and internal screw threads Medium quality ISO 3269, Fasteners Acceptance inspection ISO 3506-1, Mechanical properties of corrosion-resistant s
25、tainless steel fasteners Part 1: Bolts, screws and studs ISO 4042, Fasteners Electroplated coatings ISO 4757, Cross recesses for screws ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 6157-1, Fasteners Surface discontinuities Part 1: Bolts, sc
26、rews 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 requirements for bolts, screws, studs and nuts ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings ISO 16048, Pa
27、ssivation of corrosion-resistant stainless-steel fasteners BS EN ISO 7045:2011ISO 7045:2011(E) 2 ISO 2011 All rights reserved3 Dimensions See Figure 1 and Table 1. Symbols and descriptions of dimensions are specified in ISO 225. The shank diameter is approximately equal to the pitch diameter or equa
28、l to the permissible major thread diameter. a) Cross recess type H b) Cross recess type Z Key 1 as-rolled end Figure 1 BS EN ISO 7045:2011ISO 7045:2011(E) ISO 2011 All rights reserved 3Table 1 Dimensions 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
29、,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 damax. 2 2,6 3,1 3,6 4,1 4,7 5,7 6,8 9,2 11,2 nom. = max. 3,2 4,0 5,0 5,6 7,00 8,00 9,50 12,00 16,00 20,00 dkmin. 2,9 3,7 4,7 5,3 6,64 7,64 9,14 11,57 15,57 19,48 nom. = max. 1,30 1,60 2,10 2,40 2,60
30、3,10 3,70 4,6 6,0 7,50 k min. 1,16 1,46 1,96 2,26 2,46 2,92 3,52 4,3 5,7 7,14 r min. 0,1 0,1 0,1 0,1 0,1 0,2 0,2 0,25 0,4 0,4 rf 2,5 3,2 4 5 6 6,5 8 10 13 16 x max. 0,9 1 1,1 1,25 1,5 1,75 2 2,5 3,2 3,8 Recess no. 0 1 2 3 4 m ref. 1,7 1,9 2,7 3 3,9 4,4 4,9 6,9 9 10,1 max. 0,95 1,2 1,55 1,8 1,9 2,4 2
31、,9 3,6 4,6 5,8 Type H Penetration min. 0,70 0,9 1,15 1,4 1,4 1,9 2,4 3,1 4,0 5,2 Cross recess m ref. 1,6 2,1 2,6 2,8 3,9 4,3 4,7 6,7 8,8 9,9 max. 0,90 1,42 1,50 1,75 1,93 2,34 2,74 3,46 4,50 5,69 Type Z Penetration min. 0,65 1,17 1,25 1,50 1,48 1,89 2,29 3,03 4,05 5,24 la cnom. min. max. Approximate
32、 mass, in kilograms per 1 000 pieces ( = 7,85 kg/dm3) (for information only) 3 2,8 3,2 0,099 0,178 0,336 4 3,76 4,24 0,111 0,196 0,366 0,544 5 4,76 5,24 0,123 0,215 0,396 0,588 0,891 1,3 6 5,76 6,24 0,134 0,223 0,462 0,632 0,951 1,38 2,32 8 7,71 8,29 0,157 0,27 0,486 0,72 1,07 1,53 2,57 4,37 10 9,71
33、 10,29 0,18 0,307 0,546 0,808 1,19 1,69 2,81 4,72 9,96 12 11,65 12,35 0,203 0,344 0,606 0,896 1,31 1,84 3,06 5,07 10,6 19,8 (14) 13,65 14,35 0,226 0,381 0,666 0,984 1,43 2 3,31 5,42 11,2 20,8 16 15,65 16,35 0,245 0,418 0,726 1,07 1,55 2,15 3,56 5,78 11,9 21,8 20 19,58 20,42 0,492 0,846 1,25 1,79 2,4
34、6 4,05 6,48 13,2 23,8 25 24,58 25,42 0,996 1,47 2,09 2,85 4,67 7,36 14,8 26,3 30 29,58 30,42 1,69 2,39 3,23 5,29 8,24 16,4 28,8 35 34,5 35,5 2,68 3,62 5,91 9,12 18 31,3 40 39,5 40,5 4,01 6,52 10 19,6 33,9 45 44,5 45,5 7,14 10,9 21,2 36,4 BS EN ISO 7045:2011ISO 7045:2011(E) 4 ISO 2011 All rights rese
35、rvedTable 1 (continued) Dimensions in millimetres Thread, d M1,6 M2 M2,5 M3 (M3,5)aM4 M5 M6 M8 M10 la cnom. min. max. Approximate mass, in kilograms per 1 000 pieces ( = 7,85 kg/dm3) (for information only) 50 49,5 50,5 11,8 22,8 38,9 (55) 54,05 55,95 12,6 24,4 41,4 60 59,05 60,95 13,5 26 43,9 NOTE P
36、referred lengths are those between the solid, bold, stepped lines. aSizes in parentheses should be avoided if possible. bP is the pitch of the thread. cScrews with nominal lengths above the bold, discontinuous line are threaded up to the head; b = l a. 4 Specifications and reference International St
37、andards See Table 2. Table 2 Specifications and reference International Standards Material Steel Stainless steel Non-ferrous metal General requirements International Standard ISO 8992 Tolerance class 6g Thread International Standard ISO 261, ISO 965-2 Property class 4.8 A2-50, A2-70 Mechanical prope
38、rty International Standard ISO 898-1 ISO 3506-1 ISO 8839 Product grade A Tolerance International Standard ISO 4759-1 Cross recess International Standard ISO 4757 As processed Requirements for electroplating are specified in ISO 4042. Requirements for non-electrolytically applied zinc flake coatins a
39、re 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 between the supplier and the purchaser. Surface integrity Limits for sur
40、face discontinuities are specified in ISO 6157-1. Acceptability Acceptance inspection is specified in ISO 3269. BS EN ISO 7045:2011ISO 7045:2011(E) ISO 2011 All rights reserved 55 Designation EXAMPLE A cross-recessed pan head screw with thread M5, nominal length l = 20 mm, property class 4.8 and cro
41、ss recess type Z is designated as follows: Pan head screw ISO 7045 - M5 20 - 4.8 - Z BS EN ISO 7045:2011ISO 7045:2011(E) 6 ISO 2011 All rights reservedBibliography 1 ISO 888, Bolts, screws and studs Nominal lengths, and thread lengths for general purpose bolts BS EN ISO 7045:2011This page deliberate
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