1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 8676:2011Hexagon head screws withmetric fine pitch thread Product grades A and BBS EN ISO 8676:2011 BRITISH STANDARDNational forewordThis British Standard is the UK imp
2、lementation of EN ISO 8676:2011.It supersedes BS EN ISO 8676:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee FME/9/3, Fasteners - Product Standards.A list of organizations represented on this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.Thi
3、s publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 71155 8ICS 21.060.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under
4、the authority of theStandards Policy and Strategy Committee on 30 April 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8676 April 2011 ICS 21.060.10 Supersedes EN ISO 8676:2000English Version Hexagon head screws with metric fine pit
5、ch thread - Product grades A and B (ISO 8676:2011) Vis tte hexagonale filetage mtrique pas fin entirement filetes - Grades A et B (ISO 8676:2011) Sechskantschrauben mit Gewinde bis Kopf und metrischen Feingewinde - Produktklassen A und B (ISO 8676:2011) This European Standard was approved by CEN on
6、31 January 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 national standards may
7、 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 language and notified t
8、o 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, Latvia, Lithuania, Lux
9、embourg, 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 Brussels 2011 CEN All ri
10、ghts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8676:2011: EBS EN ISO 8676:2011EN ISO 8676:2011 (E) 3 Foreword This document (EN ISO 8676:2011) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ in collaboration with Technical
11、 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 October 2011, and conflicting national standards shall be withdrawn at th
12、e latest by October 2011. 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 8676:2000. According to the
13、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, Italy, Latvia,
14、Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 8676:2011 has been approved by CEN as a EN ISO 8676:2011 without any modification. BS EN ISO 8676:2011ISO 8676:2011(
15、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 member body in
16、terested 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 International Electrotechni
17、cal 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 adopted by the
18、 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 patent rights.
19、 ISO shall not be held responsible for identifying any or all such patent rights. ISO 8676 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 10, Product standards for fasteners. This third edition cancels and replaces the second edition (ISO 8676:1999), of which it constitutes
20、 a minor revision. BS EN ISO 8676:2011ISO 8676:2011(E) iv ISO 2011 All rights reservedIntroduction This International Standard belongs to a complete group of product standards developed by ISO on external hexagon drive fasteners. It comprises the following: a) hexagon head bolts (ISO 4014, ISO 4015,
21、 ISO 4016 and ISO 8765); b) hexagon head screws (ISO 4017, ISO 4018 and ISO 8676); c) hexagon nuts (ISO 4032, ISO 4033, ISO 4034, ISO 4035, ISO 4036, ISO 7040, ISO 7041, ISO 7042, ISO 7719, ISO 7720, ISO 8673, ISO 8674, ISO 8675, ISO 10511, ISO 10512 and ISO 10513); d) hexagon bolts with flange (ISO
22、 4162, ISO 15071 and ISO 15072); e) hexagon nuts with flange (ISO 4161, ISO 7043, ISO 7044, ISO 10663, ISO 12125, ISO 12126 and ISO 21670). BS EN ISO 8676:2011INTERNATIONAL STANDARD ISO 8676:2011(E) ISO 2011 All rights reserved 1Hexagon head screws with metric fine pitch thread Product grades A and
23、B 1 Scope This International Standard specifies the characteristics of hexagon head screws with metric fine pitch thread with nominal thread diameters, d, from 8 mm to 64 mm, of product grade A for nominal thread diameters, d, from 8 mm to 24 mm and nominal lengths, l, up to and including 10d or 150
24、 mm, whichever is the shorter, and of product grade B for nominal thread diameters, d, over 24 mm or nominal lengths, l, over 10d or 150 mm, whichever is the shorter. If, in special cases, specifications other than those listed in this International Standard are required, they can be selected from e
25、xisting International Standards, for example ISO 724, ISO 888, ISO 898-1, ISO 965-1, ISO 3506-1, ISO 4753 and ISO 4759-1. It is intended that coarse thread screws according to ISO 4017 be the first choice. 2 Normative references The following referenced documents are indispensable for the applicatio
26、n 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, st uds and nuts Symbols and descriptions of dimensions ISO 724, ISO general-purpose me
27、tric screw threads Basic dimensions 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 965-1, ISO general-purpose metric screw threads Tolerances Part 1: Principles
28、 and basic data 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 4753, Fasteners Ends of parts with external ISO metric thread ISO 4759-1, Tolera
29、nces 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 8839, Mechanical properties of fasteners Bolts, screws, studs and nuts made of non-ferrous metals ISO 8992, Fa
30、steners General requirements fo r bolts, screws, studs and nuts ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings BS EN ISO 8676:2011ISO 8676:2011(E) 2 ISO 2011 All rights reserved3 Dimensions See Figure 1 and Tables 1 and 2. Symbols and descriptions of dimensions are specified i
31、n ISO 225. Dimensions in millimetres a = 15 to 30. b The point shall be chamfered in accordance with ISO 4753. c Incomplete thread u u 2P. d Reference datum for dw. eds pitch diameter. f Permissible shape. Figure 1 BS EN ISO 8676:2011ISO 8676:2011(E) ISO 2011 All rights reserved 3Table 1 Preferred t
32、hreads Dimensions inmillimetres Thread(d P)M8 1 M10 1M121,5M161,5M201,5M24 2 M30 2M36 3M42 3M48 3M56 4M64 4 max.3 3 4,5 4,5 4,5 6 6 9 9 9 12 12 amin. 1 1 1,5 1,5 1,5 2 2 3 3 3 4 4 max.0,60 0,60 0,60 0,8 0,8 0,8 0,8 0,8 1,0 1,0 1,0 1,0 c min. 0,15 0,15 0,15 0,2 0,2 0,2 0,2 0,2 0,3 0,3 0,3 0,3 damax.9
33、,2 11,2 13,7 17,7 22,4 26,4 33,4 39,4 45,6 52,6 63 71 A 11,63 14,63 16,63 22,49 28,19 33,61 dwProduct gradeB min. 11,47 14,47 16,47 22 27,7 33,25 42,75 51,11 59,95 69,45 78,66 88,16 A 14,38 17,77 20,03 26,75 33,53 39,98 eProduct gradeB min. 14,20 17,59 19,85 26,17 32,95 39,55 50,85 60,79 71,3 82,6 9
34、3,56 104,86nom. 5,3 6,4 7,5 10 12,5 15 18,7 22,5 26 30 35 40 max.5,45 6,58 7,68 10,18 12,715 15,215 Product grade A min. 5,15 6,22 7,32 9,82 12,285 14,785 max.5,54 6,69 7,79 10,29 12,85 15,35 19,12 22,92 26,42 30,42 35,5 40,5 kProduct grade B min. 5,06 6,11 7,21 9,71 12,15 14,65 18,28 22,08 25,58 29
35、,58 34,5 39,5 A 3,61 4,35 5,12 6,87 8,6 10,35 kwaProduct gradeB min. 3,54 4,28 5,05 6,8 8,51 10,26 12,8 15,46 17,91 20,71 24,15 27,65 rmin. 0,4 0,4 0,6 0,6 0,8 0,8 1 1 1,2 1,6 2 2 nom. =max. 13,00 16,00 18,00 24,00 30,00 36,00 46 55,0 65,0 75,0 85,0 95,0 A 12,73 15,73 17,73 23,67 29,67 35,38 sProduc
36、t gradeB min. 12,57 15,57 17,57 23,16 29,16 35 45 53,8 63,1 73,1 82,8 92,8 BS EN ISO 8676:2011ISO 8676:2011(E) 4 ISO 2011 All rights reservedTable 1 (continued)Dimensions inmillimetres Thread(d P)M8 1 M10 1M121,5M161,5M201,5M24 2 M30 2M36 3M42 3M48 3M56 4M64 4 Product gradeA B lbnom. min. max.min. m
37、ax.16 15,65 16,35 20 19,58 20,42 25 24,58 25,42 30 29,58 30,42 35 34,5 35,5 40 39,5 40,5 38,75 41,25 45 44,5 45,5 43,75 46,25 50 49,5 50,5 48,75 51,25 55 54,4 55,6 53,5 56,5 60 59,4 60,6 58,5 61,5 65 64,4 65,6 63,5 66,5 70 69,4 70,6 68,5 71,5 80 79,4 80,6 78,5 81,5 90 89,3 90,7 88,25 91,75 100 99,3
38、100,7 98,25 101,75110 109,3 110,7 108,25111,75120 119,3 120,7 118,25121,75130 129,2 130,8 128 132 140 139,2 140,8 138 142 150 149,2 150,8 148 152 160 158 162 180 178 182 200 197,7 202,3 220 217,7 222,3 BS EN ISO 8676:2011ISO 8676:2011(E) ISO 2011 All rights reserved 5Table 1 (continued)Dimensions in
39、millimetres Thread(d P)M8 1 M10 1M121,5M161,5M201,5M24 2 M30 2M36 3M42 3M48 3M56 4M64 4 Product gradeA B lbnom. min. max.min. max.240 237,7 242,3 260 257,4 262,6 280 277,4 282,6 300 297,4 302,6 320 317,15322,85340 337,15342,85360 357,15362,85380 377,15382,85400 397,15402,85420 416,85423,15440 436,85
40、443,15460 456,85463,15480 476,85483,15500 496,85503,15akw,min=0,7 kmin. bRange of preferred lengths between the solid, bold, stepped lines: for product grade A, above the discontinuous, stepped line; for product grade B, belowthisstepped line.BS EN ISO 8676:2011ISO 8676:2011(E) 6 ISO 2011 All rights
41、 reservedTable 2 Non-preferredthreads Dimensions inmillimetres Thread(dP)M101,25M121,25M14 1,5M18 1,5M20 2 M22 1,5 M27 2 M33 2 M39 3 M45 3 M52 4 M60 4 max. 4 4 4,5 4,5 6 4,5 6 6 9 9 12 12 amin. 1,25 1,25 1,5 1,5 2 1,5 2 2 3 3 4 4 max. 0,600,60 0,60 0,8 0,8 0,8 0,8 0,8 1,0 1,0 1,0 1,0 c min. 0,15 0,1
42、5 0,15 0,2 0,2 0,2 0,2 0,2 0,3 0,3 0,3 0,3 damax. 11,2 13,7 15,7 20,2 22,4 24,4 30,4 36,4 42,4 48,6 56,6 67 A 14,63 16,63 19,64 25,34 28,19 31,71 dwProduct gradeB min. 14,47 16,47 19,15 24,85 27,7 31,35 38 46,55 55,86 64,7 74,2 83,41 A 17,77 20,03 23,36 30,14 33,53 37,72 eProduct gradeB min. 17,59 1
43、9,85 22,78 29,56 32,95 37,29 45,2 55,37 66,44 76,95 88,25 99,21 nom. 6,4 7,5 8,8 11,5 12,5 14 17 21 25 28 33 38 max. 6,58 7,68 8,98 11,715 12,715 14,215 Product grade A min. 6,22 7,32 8,62 11,285 12,285 13,785 max. 6,69 7,79 9,09 11,85 12,85 14,35 17,35 21,42 25,42 28,42 33,5 38,5 kProduct grade B m
44、in. 6,11 7,21 8,51 11,15 12,15 13,65 16,65 20,58 24,58 27,58 32,5 37,5 A 4,35 5,12 6,03 7,9 8,6 9,65 kwaProduct gradeB min. 4,28 5,05 5,96 7,81 8,51 9,56 11,66 14,41 17,21 19,31 22,75 26,25 rmin. 0,4 0,6 0,6 0,6 0,8 0,8 1 1 1 1,2 1,6 2 nom. =max. 16,00 18,00 21,00 27,00 30,00 34,00 41 50 60,0 70,0 8
45、0,0 90,0 A 15,73 17,73 20,67 26,67 29,67 33,38 sProduct gradeB min. 15,57 17,57 20,16 26,16 29,16 33 40 49 58,8 68,1 78,1 87,8 BS EN ISO 8676:2011ISO 8676:2011(E) ISO 2011 All rights reserved 7Table 2 (continued)Dimensions inmillimetres Thread(dP)M101,25M121,25M14 1,5M18 1,5M20 2 M22 1,5 M27 2 M33 2
46、 M39 3 M45 3 M52 4 M60 4 Product gradeA B lbnom. min. max.min. max.20 19,5820,42 25 24,5825,42 30 29,5830,42 35 34,5 35,5 40 39,5 40,5 45 44,5 45,5 50 49,5 50,5 55 54,4 55,6 53,5 56,5 60 59,4 60,6 58,5 61,5 65 64,4 65,6 63,5 66,5 70 69,4 70,6 68,5 71,5 80 79,4 80,6 78,5 81,5 90 89,3 90,7 88,25 91,75
47、 100 99,3 100,798,25 101,75110 109,3110,7108,25111,75120 119,3120,7118,25121,75130 129,2130,8128 132 140 139,2140,8138 142 150 149,2150,8148 152 160 158 162 180 178 182 BS EN ISO 8676:2011ISO 8676:2011(E) 8 ISO 2011 All rights reservedTable 2 (continued)Dimensions inmillimetres Thread(dP)M101,25M121
48、,25M14 1,5M18 1,5M20 2 M22 1,5 M27 2 M33 2 M39 3 M45 3 M52 4 M60 4 Product gradeA B lbnom. min. max.min. max.200 197,7 202,3 220 217,7 222,3 240 237,7 242,3 260 257,4 262,6 280 277,4 282,6 300 297,4 302,6 320 317,15322,85340 337,15342,85360 357,15362,85380 377,15382,85400 397,15402,85420 416,85423,15440 436,85443,15460 456,85463,15480 476,85483,15500 496,85503,15akw,min=0,
