1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 8765:2011Hexagon head bolts withmetric fine pitch thread Product grades A and B (ISO8765:2011)BS EN ISO 8765:2011 BRITISH STANDARDNational forewordThis British Standard
2、 is the UK implementation of EN ISO 8765:2011. It supersedes BS EN ISO 8765:2001 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee FME/9/3, Fasteners - Product Standards.A list of organizations represented on this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
3、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 71156 5 ICS 21.060.10Compliance with a British Standard cannot confer immunity from legal obligations.This British Standar
4、d was published under the authority of the Standards Policy and Strategy Committee on 31 March 2011.Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8765 March 2011 ICS 21.060.10 Supersedes EN ISO 8765:2000English Version Hexagon
5、 head bolts with metric fine pitch thread - Product grades A and B (ISO 8765:2011) Vis tte hexagonale filetage mtrique pas fin partiellement filetes - Grades A et B (ISO 8765:2011) Sechskantschrauben mit Schaft und metrischem Feingewinde - Produktklassen A und B (ISO 8765:2011) This European Standar
6、d was approved by CEN on 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 su
7、ch national 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 ow
8、n 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 Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Ital
9、y, Latvia, 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
10、 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8765:2011: EBS EN ISO 8765:2011EN ISO 8765:2011 (E) 3 Foreword This document (EN ISO 8765:2011) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ in col
11、laboration 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 September 2011, and conflicting national standar
12、ds shall be withdrawn at the latest by September 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
13、 8765:2000. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Icel
14、and, Ireland, 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 8765:2011 has been approved by CEN as a EN ISO 8765:2011 without any modification. BS E
15、N ISO 8765:2011ISO 8765:2011(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 co
16、mmittees. 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 non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with th
17、e 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, Part 2. The main task of technical committees is to prepare International Standards. Draft Internati
18、onal 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 casting a vote. Attention is drawn to the possibility that some of the elements of this document may be
19、the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8765 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 8765:1
20、999), of which it constitutes a minor revision. BS EN ISO 8765:2011ISO 8765:2011(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 he
21、ad bolts (ISO 4014, ISO 4015, 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) h
22、exagon bolts with flange (ISO 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 8765:2011INTERNATIONAL STANDARD ISO 8765:2011(E) ISO 2011 All rights reserved 1Hexagon head bolts with metric fine pitch
23、thread Product grades A and B 1 Scope This International Standard specifies the characteristics of hexagon head bolts 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
24、to and including 10d or 150 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,
25、they can be selected from existing 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 bolts according to ISO 4014 be the first choice. 2 Normative references The following referenced documents are indisp
26、ensable 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) applies. ISO 225, Fasteners Bolts, screws, st uds and nuts Symbols and descriptions of dimensions ISO 2
27、61, ISO general-purpose metric screw threads General plan ISO 724, ISO general-purpose metric 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
28、 thread ISO 965-1, ISO general-purpose metric screw threads Tolerances Part 1: Principles 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 coat
29、ings ISO 4753, Fasteners Ends 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 8839, Mechanical prop
30、erties of fasteners Bolts, screws, studs and nuts made of non-ferrous metals ISO 8992, Fasteners General requirements fo r bolts, screws, studs and nuts ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings BS EN ISO 8765:2011ISO 8765:2011(E) 2 ISO 2011 All rights reserved3 Dimension
31、s See Figure 1 and Tables 1 and 2. Symbols and descriptions of dimensions are specified in ISO 225. Dimensions in millimetres a = 15 to 30. b Point shall be chamfered in accordance with ISO 4753. c Incomplete thread u u 2P. d Reference datum for dw.e Maximum underhead fillet. fdsapplies if values of
32、 ls,minare specified. Figure 1 BS EN ISO 8765:2011ISO 8765:2011(E) ISO 2011 All rights reserved 3Table 1 Preferred threads Dimensions inmillimetres Thread(dP) M8 1 M10 1 M12 1,5 M16 1,5 M20 1,5 M24 2 M30 2 M36 3 M42 3 M48 3 M56 4 M64 4 a 22 26 30 38 46 54 66 b 28 32 36 44 52 60 72 84 96 108 bref. c
33、41 45 49 57 65 73 85 97 109 121 137 153 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. 9,2 11,2 13,7 17,7 22,4 26,4 33,4 39,4 45,6 52,6 63 71 dsnom. =max. 8,00 10,00 12,00 16,00 20,00 24,00 30,00 36,00 42,00 48,00 56,00 64,00
34、A 7,78 9,78 11,73 15,73 19,67 23,67 Product gradeB min. 7,64 9,64 11,57 15,57 19,48 23,48 29,48 35,38 41,38 47,38 55,26 63,26 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
35、 gradeB min. 14,20 17,59 19,85 26,17 32,95 39,55 50,85 60,79 71,3 82,6 93,56 104,86 lfmax. 2 2 3 3 4 4 6 6 8 10 12 13 nom. 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 Amin. 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
36、19,12 22,92 26,42 30,42 35,5 40,5 kProduct grade Bmin. 5,06 6,11 7,21 9,71 12,15 14,65 18,28 22,08 25,58 29,58 34,5 39,5 A 3,61 4,35 5,12 6,87 8,6 10,35 kwdProduct 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
37、,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 sProduct 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 8765:2011ISO 8765:2011(E) 4 ISO 2011 All rights reservedTable 1 (continued)Dimensions inmillimetres Thread(d
38、P)M8 1 M10 1 M12 1,5 M16 1,5 M20 1,5 M24 2 M30 2 M36 3 M42 3 M48 3 M56 4 M64 4 Product grade A B lsand lgellslglslglslglslglslglslglslglslglslglslglslglslgnom. min. max.min. max.min. max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.35 34,535,540 39,5 40,5 1
39、1,75 18 For sizes above the solid,bold, stepped line,see ISO 8676. 45 44,5 45,5 16,75 23 11,519 50 49,5 50,5 21,75 28 16,524 11,2520 55 54,4 55,6 26,75 33 21,529 16,2525 60 59,4 60,6 31,75 38 26,534 21,2530 65 64,4 65,6 36,75 43 31,539 26,2535 17 27 70 69,4 70,6 41,75 48 36,544 31,2540 22 32 80 79,4
40、 80,6 51,75 58 46,554 41,2550 32 42 21,534 90 89,3 90,7 88,25 91,75 56,564 51,2560 42 52 31,544 100 99,3 100,798,25 101,75 66,574 61,2570 52 62 41,554 31 46 110 109,3 110,7108,25 111,75 71,2580 62 72 51,564 41 56 120 119,3 120,7118,25 121,75 81,2590 72 82 61,574 51 66 36,554 130 129,2 130,8128 132 7
41、6 86 65,578 55 70 40,558 140 139,2 140,8138 142 86 96 75,588 65 80 50,568 36 56 150 149,2 150,8148 152 96 106 85,598 75 90 60,578 46 66 160 158 162 106 116 95,5108 85 100 70,588 56 76 41,564 180 178 182 115,5128 105 120 90,5108 76 96 61,584 200 197,7 202,3 135,5148 125 140 110,5128 96 116 81,5104 67
42、 92 220 217,7 222,3 132 147 117,5135 103 123 88,5111 74 99 55,583 240 237,7 242,3 152 167 137,5155 123 143 108,5131 94 119 75,5103260 257,4 262,6 157,5175 143 163 128,5151 114 139 95,5123 77 107 280 277,4 282,6 177,5195 163 183 148,5171 134 159 115,5143 97 127 300 297,4 302,6 197,5215 183 203 168,51
43、91 154 179 135,5163 117 147 BS EN ISO 8765:2011ISO 8765:2011(E) ISO 2011 All rights reserved 5Table 1 (continued)Dimensions inmillimetres Thread(dP)M8 1 M10 1 M12 1,5 M16 1,5 M20 1,5 M24 2 M30 2 M36 3 M42 3 M48 3 M56 4 M64 4 Product grade A B lsand lgellslglslglslglslglslglslglslglslglslglslglslglsl
44、gnom. min. max.min. max.min. max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.min.max.320 317,15 322,85 203 223 188,5211 174 199 155,5183 137 167 340 337,15 342,85 223 243 208,5231 194 219 175,5203 157 187 360 357,15 362,85 243 263 228,5251 214 239 195,5223 177 207
45、 380 377,15 382,85 248,5271 234 259 215,5243 197 227 400 397,15 402,85 268,5291 254 279 235,5263 217 247 420 416,85 423,15 288,5311 274 299 255,5283 237 267 440 436,85 443,15 308,5331 294 319 275,5303 257 287 460 456,85 463,15 314 339 295,5323 277 307 480 476,85 483,15 334 259 315,5343 297 327 500 4
46、96,85 503,15 335,5363 317 347 NOTEPreferred lengthsare defined in terms of lsand lg: for product gradeA, above the discontinuous, stepped line; for product gradeB, belowthis stepped line. aFor lnomu125 mm. bFor 125mm 200 mm. dkw,min=0,7 kmin. elg,max=lnomb. ls,min=lg,max5P. P is the pitch of the thr
47、ead, specified in ISO 261. BS EN ISO 8765:2011ISO 8765:2011(E) 6 ISO 2011 All rights reservedTable 2 Non-preferredthreads Dimensions inmillimetres Thread(dP) M101,25M12 1,25M141,5 M18 1,5 M20 2 M22 1,5 M27 2 M33 2 M39 3 M45 3 M52 4 M60 4 a 26 30 34 42 46 50 60 b 32 36 40 48 52 56 66 78 90 102 116 br
48、ef. c 45 49 57 61 65 69 79 91 103 115 129 145 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. 11,2 13,7 15,7 20,2 22,4 24,4 30,4 36,4 42,4 48,6 56,6 67 dsnom. =max. 10,00 12,00 14,00 18,00 20,00 22,00 27,00 33,00 39,00 45,00 52,00 60,00 A 9,78 11,73 13,73 17,73 19,67 21,67 Product gradeB min. 9,64 11,57 13,54 17,57 19,48 21,48 26,48 32,38 38,38 44,38 51,26 59,26 A 14,63 16,63 19,37 25,34 28,19 31,71 dwProduct gradeB min.
