1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 8674:2012Hexagon high nuts (style 2) with metric fine pitch thread Product grades A and BBS EN ISO 8674:2012 BRITISH STANDARDNational forewordThis British Standard is t
2、he UK implementation of EN ISO 8674:2012. It supersedes BS EN ISO 8674:2001 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee FME/9, Fasteners.A list of organizations represented on this committee can be obtained on request to its secretary.This publicat
3、ion does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 78563 4 ICS 21.060.20 Compliance with a British Standard cannot confer immunity
4、 from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8674 December 2012 ICS 21.060.20 S
5、upersedes EN ISO 8674:2000English Version Hexagon high nuts (style 2) with metric fine pitch thread - Product grades A and B (ISO 8674:2012) crous hexagonaux hauts (style 2) filetage mtrique pas fin - Grades A et B (ISO 8674:2012) Sechskantmuttern, Typ 2, mit metrischem Feingewinde - Produktklassen
6、A und B (ISO 8674:2012) This European Standard was approved by CEN on 15 November 2012. 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 list
7、s and bibliographical references concerning such 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
8、the responsibility of a CEN member into its own 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, Former Yug
9、oslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPE
10、N DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8674:2012: EBS EN ISO 8674:2012EN ISO 8674:2012 (E) 3 Foreword This doc
11、ument (EN ISO 8674:2012) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ incollaboration 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 identic
12、altext or by endorsement, at the latest by June 2013, and conflicting national standards shall be withdrawn atthe latest by June 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. CEN and/or CENELEC shall not be held responsible
13、 for identifying any or all such patent rights. This document supersedes EN ISO 8674:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Cze
14、chRepublic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
15、Endorsement notice The text of ISO 8674:2012 has been approved by CEN as a EN ISO 8674:2012 without any modification. BS EN ISO 8674:2012ISO 8674:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references . 13 Dimensions . 14 Requirements and refere
16、nce International Standards 35 Designation . 3Bibliography . 4BS EN ISO 8674:2012ISO 8674:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carr
17、ied out through ISO technical committees. 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.
18、ISO collaborates closely with the 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 Internatio
19、nal Standards. Draft International 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 elem
20、ents of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 8674 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 12, Fasteners with metric internal thread.This third edition cancels and replac
21、es the second edition (ISO 8674:1999), of which it constitutes a minor revision.iv ISO 2012 All rights reservedBS EN ISO 8674:2012ISO 8674:2012(E)IntroductionThis International Standard belongs to a complete group of product standards developed by ISO on external hexagon drive fasteners. It comprise
22、s the following:a) hexagon head 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
23、 10512 and ISO 10513);d) hexagon 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). ISO 2012 All rights reserved vBS EN ISO 8674:2012BS EN ISO 8674:2012Hexagon high nuts (style 2) with metri
24、c fine pitch thread Product grades A and B1 ScopeThis International Standard specifies the characteristics of hexagon high nuts (style 2) with metric fine pitch thread, with nominal thread diameters, D, from 8 mm up to and including 36 mm, with product grade A for sizes D 16 mm and product grade B f
25、or sizes D 16 mm.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 724, ISO 898-2, ISO 965-1 and ISO 4759-1.2 Normative referencesThe following documents, in whole or i
26、n part, are normatively referenced in this document and are indispensable to its application. 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 dimensionsISO 724, ISO g
27、eneral-purpose metric screw threads Basic dimensionsISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel Part 2: Nuts with specified property classes Coarse thread and fine pitch threadISO 965-1, ISO general-purpose metric screw threads Tolerances Part 1: Principles and
28、 basic dataISO 3269, Fasteners Acceptance inspectionISO 4042, Fasteners Electroplated coatingsISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and CISO 6157-2, Fasteners Surface discontinuities Part 2: NutsISO 8839, Mechanical properties of fasteners Bol
29、ts, screws, studs and nuts made of non-ferrous metalsISO 8992, Fasteners General requirements for bolts, screws, studs and nutsISO 10683, Fasteners Non-electrolytically applied zinc flake coatings3 DimensionsSee Figure 1 and Tables 1 and 2.Symbols and descriptions of dimensions are specified in ISO
30、225.INTERNATIONAL STANDARD ISO 8674:2012(E) ISO 2012 All rights reserved 1BS EN ISO 8674:2012ISO 8674:2012(E)aUnless otherwise specified at the time of order, the nuts are delivered without washer-face.b = 15 to 30.c = 90 to 120.Figure 1Table 1 Preferred threadsDimensions in millimetresThread (D P)
31、M81 M101 M121,5 M161,5 M201,5 M242 M302 M363cmax. 0,60 0,60 0,60 0,80 0,80 0,80 0,80 0,80min. 0,15 0,15 0,15 0,20 0,20 0,20 0,20 0,20damax. 8,75 10,80 13,00 17,30 21,60 25,90 32,40 38,90min. 8,00 10,00 12,00 16,00 20,00 24,00 30,00 36,00dwmin. 11,63 14,63 16,63 22,49 27,70 33,25 42,75 51,11e min. 14
32、,38 17,77 20,03 26,75 32,95 39,55 50,85 60,79mmax. 7,50 9,30 12,00 16,40 20,30 23,90 28,60 34,70min. 7,14 8,94 11,57 15,70 19,00 22,60 27,30 33,10mwmin. 5,71 7,15 9,26 12,56 15,20 18,08 21,84 26,48snom. = max. 13,00 16,00 18,00 24,00 30,00 36,00 46,00 55,00min. 12,73 15,73 17,73 23,67 29,16 35,00 45
33、,00 53,80Table 2 Non-preferred threadsDimensions in millimetresThread (D P) M101,25 M121,25 M141,5 M181,5 M202 M221,5 M272 M332cmax. 0,60 0,60 0,60 0,80 0,80 0,80 0,80 0,80min. 0,15 0,15 0,15 0,20 0,20 0,20 0,20 0,20damax. 10,80 13,00 15,10 19,50 21,60 23,70 29,10 35,60min. 10,00 12,00 14,00 18,00 2
34、0,00 22,00 27,00 33,00dwmin. 14,63 16,63 19,64 24,85 27,70 31,35 38,00 46,55e min. 17,77 20,03 23,36 29,56 32,95 37,29 45,20 55,37mmax. 9,30 12,00 14,10 17,60 20,30 21,80 26,70 32,50min. 8,94 11,57 13,40 16,90 19,00 20,50 25,40 30,90mwmin. 7,15 9,26 10,72 13,52 15,20 16,40 20,32 24,72snom. = max. 16
35、,00 18,00 21,00 27,00 30,00 34,00 41,00 50,00min. 15,73 17,73 20,67 26,16 29,16 33,00 40,00 49,002 ISO 2012 All rights reservedBS EN ISO 8674:2012ISO 8674:2012(E)4 Requirements and reference International StandardsSee Table 3.Table 3 Requirements and reference International StandardsMaterial SteelGe
36、neral requirements International Standard ISO 8992ThreadTolerance class 6HInternational Standards ISO 724, ISO 965-1Mechanical propertiesProperty classD 16 mm: 8, 12D 36 mm: 10International Standard ISO 898-2ToleranceProduct gradeD 16 mm: A D 16 mm: BInternational Standard ISO 4759-1Finish CoatingAs
37、 processedRequirements for electroplating are specified in ISO 4042.Requirements for non-electrolytically applied zinc flake coatings are specified in ISO 10683.Additional requirements or other finishes or coatings shall be agreed between the supplier and the purchaser.Surface integrityLimits for su
38、rface discontinuities are specified in ISO 6157-2.Acceptability Acceptance inspection is specified in ISO 3269.5 DesignationEXAMPLE A hexagon high nut (style 2) with thread M16 1,5 and property class 12 is designated as follows:Hexagon high nut ISO 8674 - M16 1,5 - 12 ISO 2012 All rights reserved 3B
39、S EN ISO 8674:2012ISO 8674:2012(E)Bibliography1 ISO 4014, Hexagon head bolts Product grades A and B2 ISO 4015, Hexagon head bolts Product grade B Reduced shank (shank diameter approximately equal to pitch diameter)3 ISO 4016, Hexagon head bolts Product grade C4 ISO 4017, Hexagon head screws Product
40、grades A and B5 ISO 4018, Hexagon head screws Product grade C6 ISO 4032, Hexagon regular nuts (style 1) Product grades A and B7 ISO 4033, Hexagon high nuts (style 2) Product grades A and B8 ISO 4034, Hexagon regular nuts (style 1) Product grade C9 ISO 4035, Hexagon thin nuts chamfered (style 0) Prod
41、uct grades A and B10 ISO 4036, Hexagon thin nuts unchamfered (style 0) Product grade B11 ISO 4161, Hexagon nuts with flange, style 2 Coarse thread12 ISO 4162, Hexagon flange bolts Small series Product grade A with driving feature of product grade B13 ISO 7040, Prevailing torque type hexagon regular
42、nuts (with non-metallic insert) Property classes 5, 8 and 1014 ISO 7041, Prevailing torque type hexagon nuts (with non-metallic insert), style 2 Property classes 9 and 1215 ISO 7042, Prevailing torque type all-metal hexagon high nuts Property classes 5, 8, 10 and 1216 ISO 7043, Prevailing torque typ
43、e hexagon nuts with flange (with non-metallic insert) Product grades A and B17 ISO 7044, Prevailing torque type all-metal hexagon nuts with flange Product grades A and B18 ISO 7719, Prevailing torque type all-metal hexagon regular nuts Property classes 5, 8 and 1019 ISO 7720, Prevailing torque type
44、all-metal hexagon nuts, style 2 Property class 920 ISO 8673, Hexagon regular nuts (style 1) with metric fine pitch thread Product grades A and B21 ISO 8675, Hexagon thin nuts chamfered (style 0) with metric fine pitch thread Product grades A and B22 ISO 8676, Hexagon head screws with metric fine pit
45、ch thread Product grades A and B23 ISO 8765, Hexagon head bolts with metric fine pitch thread Product grades A and B24 ISO 10511, Prevailing torque type hexagon thin nuts (with non-metallic insert)25 ISO 10512, Prevailing torque type hexagon regular nuts (with non-metallic insert) with metric fine p
46、itch thread Property classes 6, 8 and 1026 ISO 10513, Prevailing torque type all-metal hexagon high nuts with metric fine pitch thread Property classes 8, 10 and 1227 ISO 10663, Hexagon nuts with flange, style 2 Fine pitch thread4 ISO 2012 All rights reservedBS EN ISO 8674:2012ISO 8674:2012(E)28 ISO
47、 12125, Prevailing torque type hexagon nuts with flange (with non-metallic insert) with metric fine pitch thread, style 2 Product grades A and B29 ISO 12126, Prevailing torque type all-metal hexagon nuts with flange with metric fine pitch thread, style 2 Product grades A and B30 ISO 15071, Hexagon b
48、olts with flange Small series Product grade A31 ISO 15072, Hexagon bolts with flange with metric fine pitch thread Small series Product grade A32 ISO 21670, Hexagon weld nuts with flange ISO 2012 All rights reserved 5This page deliberately left blankThis page deliberately left blankBSI is the indepe
49、ndent national body responsible for preparing British Standards and other standards-related publications, information and services. It presents the UK view on standards in Europe and at the international level. BSI is incorporated by Royal Charter. British Standards and other standardisation products are published by BSI Standards Limited.Br
