1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 7380-2:2011Button head screwsPart 2: Hexagon socket button head screwswith collar (ISO 7380-2:2011)Incorporating corrigendum November 2011BS EN ISO 7380-2:2011 BRITISH
2、STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 7380-2:2011. It supersedes BS EN ISO 7380:2004,which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e F M E / 9 / 3 , F a s t e n e r s - P r o d u c t S t a n d
3、 a r d s .A list of organizations represented on this committee can be obtained on request 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 76657 2 ICS 21.060.10 Compli
4、ance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2011.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dImplementation of CEN Correcti
5、on NoticeAugust 2011. Correction to supersessioninformation.30 November 2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7380-2 August 2011 ICS 21.060.10 Supersedes EN ISO 7380:2004English Version Button head screws - Part 2: Hexagon socket button head screws with collar (ISO 7380-2:2011
6、) Vis tte cylindrique bombe plate - Partie 2: Vis tte cylindrique bombe plate six pans creux embase plate (ISO 7380-2:2011) Halbrundkopfschrauben (abgeflacht) - Teil 2: Abgeflachter Halbrundkopf mit Bund und Innensechskant (ISO 7380-2:2011) This European Standard was approved by CEN on 22 July 2011.
7、 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 national standards may be obtained on
8、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 language and notified to the CEN-CENELE
9、C 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, Latvia, Lithuania, Luxembourg, Malta,
10、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 Brussels 2011 CEN All rights of exploita
11、tion in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 7380-2:2011: E3 Foreword This document (EN ISO 7380-2:2011) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ in collaboration with Technical Committee CEN/TC 185 “Fasteners” the secretariat of
12、 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 February 2012, and conflicting national standards shall be withdrawn at the latest by February 2012. Attention is drawn to th
13、e 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 7380:2004. According to the CEN/CENELEC Internal Regulations, the national sta
14、ndards 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, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
15、 Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 7380-2:2011 has been approved by CEN as a EN ISO 7380-2:2011 without any modification. BS EN ISO 7380-2:2011 EN ISO 7380-2:2011 (E)iiiForeword ISO (the International
16、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 member body interested in a subject for which a technical committee has been esta
17、blished 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 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardiza
18、tion. 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 adopted by the technical committees are circulated to the member bodies for votin
19、g. 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 patent rights. ISO shall not be held responsible for identifying any or all such
20、patent rights. ISO 7380-2 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 11, Fasteners with metric external thread. This first edition of ISO 7380-2, together with ISO 7380-1, cancels and replaces ISO 7380:2004, which has been technically revised. ISO 7380 consists of the f
21、ollowing parts, under the general title Button head screws: Part 1: Hexagon socket button head screws Part 2: Hexagon socket button head screws with collar BS EN ISO 7380-2:2011 EN ISO 7380-2:2011 (E) ISO 2011 BS EN ISO 7380-2:2011 EN ISO 7380-2:2011 (E)INTERNATIONAL STANDARD1Button head screws Part
22、 2: Hexagon socket button head screws with collar 1 Scope This International Standard specifies the characteristics of hexagon socket button head screws with collar with threads from M3 up to and including M16, with product grade A and with reduced loadability according to Table 3. If, in special ca
23、ses, specifications other than those listed in this International Standard are required, they can be selected from existing International Standards, e.g. ISO 261, ISO 888, ISO 898-1, ISO 965-2 and ISO 4759-1. 2 Normative references The following referenced documents are indispensable for the applica
24、tion of this document. 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
25、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 classes Coarse thread and fine pitch thread ISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of si
26、zes for general purpose external and internal screw threads Medium quality ISO 965-3, ISO general purpose metric screw threads Tolerances Part 3: Deviations for constructional screw threads ISO 3269, Fasteners Acceptance inspection ISO 4042, Fasteners Electroplated coatings ISO 4753, Fasteners Ends
27、of parts with external ISO metric thread 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, screws and studs for general requirements ISO 8992, Fasteners General requirements for bolts, scr
28、ews, studs and nuts ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings EN ISO 7380-2:2011 (E) ISO 2011BS EN ISO 7380-2:2011 2 ISO 23429, Gauging of hexagon sockets 3 Dimensions See Figure 1 and Table 1. Symbols and descriptions of dimensions are specified in ISO 225. Key rsunderhe
29、ad radius for a screw with unthreaded shank rtunderhead radius for a fully threaded screw adsapplies if values of ls,minare specified. bContour at the discretion of the manufacturer. cIn accordance with ISO 4753, point chamfered or for sizes M4 “as rolled”. dIncomplete thread u 2P. eA slight roundin
30、g or countersink at the mouth of the socket is permissible. fFor broached sockets which are at the maximum limit of size, the overcut resulting from drilling shall not exceed one third of the length of any flat of the socket which is e/2. gPermissible alternative form of socket. Figure 1 Hexagon soc
31、ket button head screw with collar BS EN ISO 7380-2:2011 EN ISO 7380-2:2011 (E) ISO 2011 3Table 1 Dimensions of hexagon socket button head screws with collar Dimensions in millimetres Thread, d M3 M4 M5 M6 M8 M10 M12 M16 Pa 0,5 0,7 0,8 1 1,25 1,5 1,75 2 bb ref. 18 20 22 24 28 32 36 44 max. 0,7 0,8 1,
32、0 1,2 1,5 2,0 2,4 2,8 c min. 0,55 0,65 0,80 1,00 1,25 1,70 2,10 2,50 damax. 3,6 4,7 5,7 6,8 9,2 11,2 13,7 17,7 max. 6,9 9,4 11,8 13,6 17,8 21,9 26,0 34,0 dcmin. 6,32 8,82 11,10 12,90 17,10 21,06 25,16 33,00 max. 5,2 7,2 8,8 10,0 13,2 16,5 19,4 26,0 dkmin. 4,9 6,8 8,4 9,6 12,8 16,1 18,9 25,5 dLref. 2
33、,6 3,8 5,0 6,0 7,7 10,0 12,0 16,0 max. 3 4 5 6 8 10 12 16 dsmin. 2,86 3,82 4,82 5,82 7,78 9,78 11,73 15,73 dwmin. 5,74 8,24 10,40 12,20 16,40 20,22 24,32 32,00 ec d min. 2,303 2,873 3,443 4,583 5,723 6,863 9,149 11,429 max. 1,65 2,20 2,75 3,30 4,40 5,50 6,60 8,80 k min. 1,40 1,95 2,50 3,00 4,10 5,20
34、 6,24 8,44 max. 3,70 4,60 5,75 6,15 7,95 9,80 11,20 15,30 rfmin. 3,30 4,20 5,25 5,65 7,45 9,20 10,50 14,50 rsmin. 0,10 0,20 0,20 0,25 0,40 0,40 0,60 0,60 rtmin. 0,30 0,40 0,45 0,50 0,70 0,70 1,10 1,10 nom. 2 2,5 3 4 5 6 8 10 max. 2,080 2,580 3,080 4,095 5,140 6,140 8,175 10,175 sd min. 2,020 2,520 3
35、,020 4,020 5,020 6,020 8,025 10,025 t min. 1,04 1,30 1,56 2,08 2,60 3,12 4,16 5,20 w min. 0,20 0,30 0,38 0,74 1,05 1,45 1,63 2,25 BS EN ISO 7380-2:2011 EN ISO 7380-2:2011 (E) ISO 2011 4 Table 1 (continued) Dimensions in millimetres Thread, d M3 M4 M5 M6 M8 M10 M12 M16 le lsand lgflslglslglslglslglsl
36、glslglslglslgnom. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max.6 5,76 6,24 8 7,71 8,29 10 9,71 10,29 12 11,65 12,35 16 15,65 16,35 20 19,58 20,42 25 24,58 25,42 4,5 7 30 29,58 30,42 9,5 12 6,5 10 4 8 35 34,5 35,5 11,5 15 9 13 6 11 40 39,5 40,5 16,5 20 14 1
37、8 11 16 5,75 12 45 44,5 45,5 19 23 16 21 10,75 17 5,5 13 50 49,5 50,5 24 28 21 26 15,75 22 10,5 18 55 54,4 55,6 26 31 20,75 27 15,5 23 10,25 19 60 59,4 60,6 31 36 25,75 32 20,5 28 15,25 24 65 64,4 65,6 30,75 37 25,5 33 20,25 29 11 21 70 69,4 70,6 35,75 42 30,5 38 25,25 34 16 26 80 79,4 80,6 45,75 52
38、 40,5 48 35,25 44 26 36 90 89,4 90,6 50,5 58 45,25 54 36 46 aP is the pitch of the thread. bFor lengths between the bold, stepped lines in the unshaded area. cemin= 1,14 smin. dCombined gauging of socket dimensions e and s, as specified in ISO 23429. eThe range of preferred lengths is between the bo
39、ld stepped lines. fLengths in the shaded area are threaded to the head within 3P. Lengths below the shaded area have values of lgand lsin accordance with the following equations: lg,max = lnom b ls,min = lg,max 5P. BS EN ISO 7380-2:2011 EN ISO 7380-2:2011 (E) ISO 2011 54 Requirements and reference I
40、nternational Standards See Tables 2 and 3. Table 2 Requirements and reference International Standards Material Steel General requirements International Standard ISO 8992 Tolerance class 6g Thread International Standard ISO 261, ISO 965-2, ISO 965-3 Property class8.8, 10.9 Marking symbol 08.8, 010.9
41、Mechanical property International Standard ISO 898-1aProduct grade A Tolerance International Standard ISO 4759-1 Finish Coating As processed. Requirements for electroplating are specified in ISO 4042. Requirements for non-electrolytically applied zinc flake coatings are specified in ISO 10683. Addit
42、ional requirements or other finishes or coatings shall be agreed between the supplier and the purchaser. Surface integrity Limits for surface discontinuities are specified in ISO 6157-1. Acceptability The acceptance inspection is specified in ISO 3269. aBecause of their head configurations, it is po
43、ssible for these screws to not meet the minimum ultimate tensile loads specified in ISO 898-1. They shall nevertheless meet the other material and property requirements for the respective property class specified in ISO 898-1. In addition, when full-size screws are tensile tested in accordance with
44、ISO 898-1, they shall withstand, without fracture, the minimum ultimate tensile loads given in Table 3. If tested to failure, the fracture may occur in the threaded section, the head, the shank or at the head/shank junction. Table 3 Reduced minimum ultimate tensile loads for hexagon socket button he
45、ad screws Property class 8.8a10.9aThread, d Reduced minimum ultimate tensile loadN M3 3 220 4 180 M4 5 620 7 300 M5 9 080 11 800 M6 12 900 16 700 M8 23 400 30 500 M10 37 100 48 200 M12 53 900 70 200 M16 100 000 130 000 a80 % of the values for Fm,min specified in ISO 898-1. BS EN ISO 7380-2:2011 EN I
46、SO 7380-2:2011 (E) ISO 2011 6 5 Designation The designation and marking requirements for steel fasteners with reduced loadability shall apply as specified in ISO 898-1. EXAMPLE A hexagon socket button head screw with collar, thread M12, of nominal length l = 40 mm and property class 10.9 in accordan
47、ce with ISO 898-1, is designated as follows: Hexagon socket button head screw ISO 7380-2 - M12 40 - 010.9 BS EN ISO 7380-2:2011 EN ISO 7380-2:2011 (E) ISO 2011 7Bibliography 1 ISO 888, Bolts, screws and studs Nominal lengths, and thread lengths for general purpose bolts BS EN ISO 7380-2:2011 EN ISO 7380-2:2011 (E) ISO 2011 This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for pr
