1、BRITISH STANDARD BS EN 24015:1992 ISO 4015:1979 Hexagon head bolts Product grade B Reduced shank (shank diameter . pitch diameter) The European Standard EN 24015:1991 has the status of a British StandardBSEN24015:1992 This British Standard, having been prepared under the directionof the General Mech
2、anical Engineering Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 1 April1992 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference GME/9 Draft announced in BSI News, February 1991 ISBN 0 580 2072
3、4 2 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries. Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation D
4、enmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Irel
5、and Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringsk
6、ommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN24015:1992 BSI 08-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of
7、 EN 24015 3 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBSEN24015:1992 ii BSI 08-1999 National foreword This British Standard has been prepared under the direction of the General Mechanical Engineering Sta
8、ndards Policy Committee and is the English language version, of EN24015:1991, Hexagon head bolts Product grade B Reduced shank (shank diameter . pitch diameter), published by the European Committee for Standardization (CEN). It is identical with ISO4015:1979, published by the International Organizat
9、ion for Standardization (ISO). EN24015:1991 was produced as a result of international discussion in which the UK took an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. C
10、ompliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyr
11、ight date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 24015 October 1991 UDC 621.882.211 Descriptors: Fasteners, bolts, hexagonal head screws, specifications, dimensions, desig
12、nation English version Hexagon head bolts Product grade B Reduced shank (Shank diameter . pitch diameter) (ISO 4015:1979) Boulons tte hexagonale Classe de produit B Tige rduite (Diamtre de tige = diamtre sur flanc de filet) (ISO 4015:1979) Sechskantschrauben mit Schaft Dnnschaft (Schaftdurchmesser =
13、 Flakendurchmesser) Produktklasse B (ISO 4015:1979) This European Standard was approved by CEN on 1991-10-10. 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 alter
14、ation. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by transl
15、ation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg
16、, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1991 Copyright reserved to all CEN members Ref. No. EN
17、 24015:1991 EEN24015:1991 BSI 08-1999 2 Foreword In 1990, ISO 4015:1979 was submitted to the CEN P.Q.-procedure. Following the positive result of the P.Q., CEN/BT agreed to submit ISO4015:1979 with the following modifications to Formal Vote. In the French version, replace: “boulon” by “vis partielle
18、ment filete” “vis” by “vis entirement filete” “boulon, vis” by “vis” “classe de produit” by “grade” “classe de caractristique” by “classe de qualit” In accordance with the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finl
19、and, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 0 Introduction 3 1 Scope and field of application 3 2 References 3 3 Dimensions 4 4 Specifications and reference standards 6 5 Des
20、ignation 6 Annex 7 Table 1 7 Table 2 8EN24015:1991 BSI 08-1999 3 0 Introduction This International Standard is part of the complete ISO product standards series on hexagon drive fasteners. The series comprises: 1 Scope and field of application This International Standard gives specifications for hex
21、agon head bolts with metric dimensions and thread diameters from3up to and including20mm, with reduced shank (shank diameter . pitch diameter), of product grade B. If, in special cases, specifications other than those listed in this International Standard are required, it is recommended that they sh
22、ould be selected from existing International Standards, for example ISO261, ISO888, ISO898, ISO965. 2 References ISO 261, ISO general purpose metric screw threads General plan. ISO 888, Bolts, screws and studs Nominal lengths, and thread lengths for general purpose bolts. ISO 898, Mechanical propert
23、ies of fasteners. ISO 965, ISO general purpose metric screw threads Tolerances. ISO 3506, Corrosion-resistant stainless steel fasteners Specifications 1) . ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws and nuts with thread diameters W 1,6 u 150 mm and product grades A, B and C. a) Hexag
24、on head bolts (ISO 4014, ISO 4015 and ISO 4016) b) Hexagon head screws (ISO 4017 and ISO 4018) c) Hexagon nuts (ISO 4032, ISO 4033, ISO 4034, ISO 4035 and ISO 4036) d) Hexagon flanged bolts (in preparation) e) Hexagon flanged screws f) Hexagon flanged nuts g) Structural bolting 1) At present at the
25、stage of draft. EN 24015:1991 4 BSI 08-1999 3 DimensionsEN 24015:1991 BSI 08-1999 5 Dimensions in millimetres Thread size d M3 M4 M5 M6 M8 M10 M12 (M14) M16 M20 P a 0,5 0,7 0,8 1 1,25 1,5 1,75 2 2 2,5 b ref. b 12 14 16 18 22 26 30 34 38 46 c 28 32 36 40 44 52 d a max. 3,6 4,7 5,7 6,8 9,2 11,2 13,7 1
26、5,7 17,7 22,4 d s . 2,6 3,5 4,4 5,3 7,1 8,9 10,7 12,5 14,5 18,2 d w min. 4,4 5,7 6,7 8,7 11,4 14,4 16,4 19,2 22 27,7 e min. 5,98 7,50 8,63 10,89 14,20 17,59 19,85 22,78 26,17 32,95 k nom. 2 2,8 3,5 4 5,3 6,4 7,5 8,8 10 12,5 min. 1,80 2,60 3,26 3,76 5,06 6,11 7,21 8,51 9,71 12,15 max. 2,20 3,00 3,74
27、4,24 5,54 6,69 7,79 9,09 10,29 12,85 k min. 1,3 1,8 2,3 2,6 3,5 4,3 5,1 6 6,8 8,5 r min. 0,1 0,2 0,2 0,25 0,4 0,4 0,6 0,6 0,6 0,8 s max. 5,5 7 8 10 13 16 18 21 24 30 min. 5,20 6,64 7,64 9,64 12,57 15,57 17,57 20,16 23,16 29,16 x max. 1,25 1,75 2 2,5 3,2 3,8 4,3 5 5 6,3 l l g l g l g l g l g l g l g
28、l g l g l g nom. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. 20 18,95 21,05 7 8 4,6 6 25 23,95 26,05 12 13 9,6 11 7,4 9 5 7 30 28,95 31,05 17 18 14,6 16 12,4 14 10 12 5,5 8 35 33,75 36,25 19,6 21 17,4 19 15 17 10,5 13 40 38,75 41,25 2
29、4,6 26 22,4 24 20 22 15,5 18 11 14 45 43,75 46,25 27,4 29 25 27 20,5 23 16 19 11,5 15 50 48,75 51,25 32,4 34 30 32 25,5 28 21 24 16,5 20 12 16 55 53,5 56,5 35 37 30,5 33 26 29 21,5 25 17 21 13 17 60 58,5 61,5 40 42 35,5 38 31 34 26,5 30 22 26 18 22 65 63,5 66,5 40,5 43 36 39 31,5 35 27 31 23 27 14 1
30、9 70 68,5 71,5 45,5 48 41 44 36,5 40 32 36 28 32 19 24 80 78,5 81,5 55,5 58 51 54 46,5 50 42 46 38 42 29 34 90 88,25 91,75 61 64 56,5 60 52 56 48 52 39 44 100 98,25 101,75 71 74 66,5 70 62 66 58 62 49 54 110 108,25 111,75 76,5 80 72 76 68 72 59 64 120 118,25 121,75 86,5 90 82 86 78 82 69 74 130 128
31、132 86 90 82 86 73 70 140 138 142 96 100 92 96 83 88 150 148 152 102 106 93 98 The popular lengths are between the stepped lines. The size M14 should be avoided if possible. a P = pitch of the thread. b For nominal lengths u 125 mm. c For nominal lengths 125 and u 200 mm. Formulae: l gmax. = l nom.
32、b ref. l gmin. = l gmax. 2 pEN24015:1991 6 BSI 08-1999 4 Specifications and reference standards 5 Designation Example for the designation of a hexagon head bolt with thread size d = M12, nominal length l =80mm and property class 8.8: Hexagon head bolt ISO 4015 M12 80-8.8 Material Steel Stainless ste
33、el Non-ferrous metal Thread Tolerance 6 g International Standards ISO 261, ISO 965 Mechanical properties Classes 5.8 8.8 A2-70 . . . . . International Standard ISO 898-1 ISO 3506 ISO . . . a Tolerances Product grade B International Standard ISO 4759-1 Finish as processed plain plain Requirements for
34、 electroplating are covered in ISO . . . a If different electroplating requirements are desired or if requirements are needed for other finishes they should be negotiated between customer and supplier. Acceptability For acceptance procedure see ISO . . . a a In preparation.EN24015:1991 BSI 08-1999 7
35、 Annex This annex is included for explanatory and informative purposes only and is not to be considered as part of this International Standard. This International Standard incorporates some changes, primarily in width across flats, from the previous metric practice in a number of countries. These ch
36、anges were made to achieve international agreement and to improve product design and utilization of material. At its meeting in May 1977, ISO/TC2 studied several technical reports analysing design considerations influencing determination of the best series of widths across flats for hexagon bolts, s
37、crews and nuts. A primary technical objective was to achieve a logical ratio between underhead bearing surface area (which determines the magnitude of the compressive stress on the bolted members) and the tensile stress area of the screw thread (which governs the clamping force which can be develope
38、d by tightening the fastener) 2) . Table 1 Table 1 lists the ratios for the sizes selected by ISO/TC2 to be ISO standard (bold type) and in addition four sizes (light type) which currently are being produced and used in substantial quantities in many countries of the world. The four sizes (widths ac
39、ross flats of 15, 17, 19 and 22mm) will be phased out of production and use. During a transitional period, to assist designers and manufacturers, and in particular to give needed information for maintenance and repair requirements, the dimensions of the four sizes are given in Table 2. 2) The calcul
40、ation technique is presented in TC2/WG4 N43 and the ratios computed for all of the various width across flats/product size combinations examined by ISO/TC2 are given in document TC2N699. Nominal thread diameter Width across flats a mm mm 5 8 1,08 6 10 1,44 8 13 1,23 15 0,90 10 16 1,30 17 1,73 12 18
41、0,91 19 1,16 14 21 0,96 22 1,24 16 24 1,02 20 30 0,95 24 36 0,86 30 46 1,02 36 55 1,04 a Calculation based on clearance holes ISO 273 (revised), medium series. Annular bearing area Thread stress area -EN24015:1991 8 BSI 08-1999 Table 2 Thread size d M10 M12 M14 P a 1,5 1,75 2 b 26 30 34 c 32 36 40 d
42、 a max. 11,2 13,7 15,7 d s . 8,9 10,7 12,5 d w min. 13,5 15,3 17,1 19,8 e min. 16,46 18,72 20,88 23,91 nom. 6,4 7,5 8,8 k min. 6,11 7,21 8,51 max. 6,69 7,79 9,09 k min. 4,3 5,1 6,0 r min. 0,4 0,6 0,6 s max. 15 17 19 22 min. 14,57 16,57 18,48 21,16 x max. 3,8 4,3 5 a P = pitch of the thread. b For no
43、minal lengths u 125 mm. c For nominal lengths 125 mm and u 200 mm. b +2P 0BSEN24015:1992 BSI 08-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the General Mechanical Engineering Standards Poli
44、cy Committee (GME/-) to Technical Committee GME/9, upon which the following bodies were represented: BEAMA Ltd. British Constructional Steelwork Association Ltd. British Industrial Fasteners Federation British Railways Board British Steel Industry British Steel Industry (Wire Section) Gauge and Tool
45、 Makers Association Ministry of Defence Society of Motor Manufacturers and Traders Ltd. Washer Manufacturers Association of Great Britain The following bodies also participated in the preparation of the standard, through subcommittees and panels: Defence Manufacturers Association General Municipal B
46、oilermaker and Allied Trades Union Screw Thread Tool Manufacturers Association Society of British Aerospace Companies Ltd. National annex NB (informative) Cross-references Publication referred to Corresponding British Standard ISO 261:1973 BS 3643 ISO metric screw threads Part 1:1981 Principles and
47、basic data ISO 888:1976 BS 7345:1990 Specification for nominal lengths of bolts, screws and studs and thread lengths for general purpose bolts ISO 3506:1979 BS 6105:1981 Specification for corrosion resistant stainless steel fasteners ISO 4759-1:1978 BS 6322 Tolerances for fasteners Part 1:1982 Speci
48、fication for tolerances of bolts, screws and nuts with thread diameters U 1.6 mm and k 150 mm and product grades A, B and CBS EN 24015:1992 ISO 4015:1979 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStan
49、dards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccura
