1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 898-2:2012Mechanical properties offasteners made of carbon steeland alloy steelPart 2: Nuts with specified property classes Coarse thread and fine pitch thread (ISO898-
2、2:2012)BS EN ISO 898-2:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 898-2:2012. It supersedes BS EN 20898-2:1994 and BS EN ISO 898-6:1996 which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee FME/9/1, Fasten
3、ers - Mechanical properties.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. The British Standards Institution
4、2012. Published by BSI Standards Limited 2012ISBN 978 0 580 70362 1 ICS 21.060.20 Compliance 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 30 April 2012.Amendments issued
5、 since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 898-2 April 2012 ICS 21.060.20 Supersedes EN 20898-2:1993English Version Mechanical properties of fasteners made of carbon steel and alloy steel - Part 2: Nuts with specified property classes - Coarse thread
6、 and fine pitch thread (ISO 898-2:2012) Caractristiques mcaniques des lments de fixation en acier au carbone et en acier alli - Partie 2: crous de classes de qualit spcifies - Filetages pas gros et filetages pas fin (ISO 898-2:2012) Mechanische Eigenschaften von Verbindungselementen aus Kohlenstoffs
7、tahl und legiertem Stahl - Teil 2: Muttern mit festgelegten Festigkeitsklassen - Regelgewinde und Feingewinde (ISO 898-2:2012) This European Standard was approved by CEN on 14 March 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giv
8、ing 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 application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three off
9、icial 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-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies o
10、f Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
11、 Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN 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 898-2:2012
12、: EBS EN ISO 898-2:2012EN ISO 898-2:2012 (E) 3 Foreword This document (EN ISO 898-2:2012) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ in collaboration with Technical Committee CEN/TC 185 “Fasteners” the secretariat of which is held by DIN. This European Standard shall be given the
13、status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2012, and conflicting national standards shall be withdrawn at the latest by September 2012. Attention is drawn to the possibility that some of the elements of this document may be
14、 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 20898-2:1993. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to imp
15、lement 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, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, S
16、witzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 898-2:2012 has been approved by CEN as a EN ISO 898-2:2012 without any modification. BS EN ISO 898-2:2012ISO 898-2:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 23 Symbol
17、s . 24 Designation systems 24.1 Designation of nut styles 24.2 Designation of property classes . 24.3 Ranges of nominal diameters in relation to nut style and property class . 35 Design of bolt and nut assemblies . 36 Materials . 47 Mechanical properties 58 Inspection 88.1 Manufacturers inspection 8
18、8.2 Suppliers inspection . 88.3 Purchasers inspection 89 Test methods 99.1 Proof load test 99.2 Hardness test . 119.3 Surface integrity inspection .1310 Marking .1310.1 General .13g20g19g17g21g3 g44g71g72g81g87g76g191g70g68g87g76g82g81g3g80g68g85g78g3g82g73g3g87g75g72g3g80g68g81g88g73g68g70g87g88g85
19、g72g85 1310.3 Marking of property classes .13g20g19g17g23g3 g44g71g72g81g87g76g191g70g68g87g76g82g81 .1410.5 Marking of left-hand thread 1510.6 Marking of packages 15Annex A (informative) Design principles of nuts .16Annex B (informative) Thread dimensions for the test mandrel 19Bibliography .21BS E
20、N ISO 898-2:2012ISO 898-2:2012(E)Forewordg44g54g50g3g11g87g75g72g3g44g81g87g72g85g81g68g87g76g82g81g68g79g3g50g85g74g68g81g76g93g68g87g76g82g81g3g73g82g85g3g54g87g68g81g71g68g85g71g76g93g68g87g76g82g81g12g3g76g86g3g68g3g90g82g85g79g71g90g76g71g72g3g73g72g71g72g85g68g87g76g82g81g3g82g73g3g81g68g87g76
21、g82g81g68g79g3g86g87g68g81g71g68g85g71g86g3g69g82g71g76g72g86g3g11g44g54g50g3 g80g72g80g69g72g85g3 g69g82g71g76g72g86g12g17g3 g55g75g72g3 g90g82g85g78g3 g82g73g3 g83g85g72g83g68g85g76g81g74g3 g44g81g87g72g85g81g68g87g76g82g81g68g79g3 g54g87g68g81g71g68g85g71g86g3 g76g86g3 g81g82g85g80g68g79g79g92g3
22、g70g68g85g85g76g72g71g3 g82g88g87g3 g87g75g85g82g88g74g75g3 g44g54g50g3g87g72g70g75g81g76g70g68g79g3g70g82g80g80g76g87g87g72g72g86g17g3g40g68g70g75g3g80g72g80g69g72g85g3g69g82g71g92g3g76g81g87g72g85g72g86g87g72g71g3g76g81g3g68g3g86g88g69g77g72g70g87g3g73g82g85g3g90g75g76g70g75g3g68g3g87g72g70g75g81g
23、76g70g68g79g3g70g82g80g80g76g87g87g72g72g3g75g68g86g3g69g72g72g81g3g72g86g87g68g69g79g76g86g75g72g71g3g75g68g86g3g87g75g72g3g85g76g74g75g87g3g87g82g3g69g72g3g85g72g83g85g72g86g72g81g87g72g71g3g82g81g3g87g75g68g87g3g70g82g80g80g76g87g87g72g72g17g3g44g81g87g72g85g81g68g87g76g82g81g68g79g3g82g85g74g68g
24、81g76g93g68g87g76g82g81g86g15g3g74g82g89g72g85g81g80g72g81g87g68g79g3g68g81g71g3g81g82g81g16g74g82g89g72g85g81g80g72g81g87g68g79g15g3g76g81g3g79g76g68g76g86g82g81g3g90g76g87g75g3g44g54g50g15g3g68g79g86g82g3g87g68g78g72g3g83g68g85g87g3g76g81g3g87g75g72g3g90g82g85g78g17g3g44g54g50g3g70g82g79g79g68g69g
25、82g85g68g87g72g86g3g70g79g82g86g72g79g92g3g90g76g87g75g3g87g75g72g3g44g81g87g72g85g81g68g87g76g82g81g68g79g3g40g79g72g70g87g85g82g87g72g70g75g81g76g70g68g79g3g38g82g80g80g76g86g86g76g82g81g3g11g44g40g38g12g3g82g81g3g68g79g79g3g80g68g87g87g72g85g86g3g82g73g3g72g79g72g70g87g85g82g87g72g70g75g81g76g70g
26、68g79g3g86g87g68g81g71g68g85g71g76g93g68g87g76g82g81g17g44g81g87g72g85g81g68g87g76g82g81g68g79g3g54g87g68g81g71g68g85g71g86g3g68g85g72g3g71g85g68g73g87g72g71g3g76g81g3g68g70g70g82g85g71g68g81g70g72g3g90g76g87g75g3g87g75g72g3g85g88g79g72g86g3g74g76g89g72g81g3g76g81g3g87g75g72g3g44g54g50g18g44g40g38g3
27、g39g76g85g72g70g87g76g89g72g86g15g3g51g68g85g87g3g21g17The main task of technical committees is to prepare International Standards. Draft International Standards g68g71g82g83g87g72g71g3g69g92g3g87g75g72g3g87g72g70g75g81g76g70g68g79g3g70g82g80g80g76g87g87g72g72g86g3g68g85g72g3g70g76g85g70g88g79g68g87
28、g72g71g3g87g82g3g87g75g72g3g80g72g80g69g72g85g3g69g82g71g76g72g86g3g73g82g85g3g89g82g87g76g81g74g17g3g51g88g69g79g76g70g68g87g76g82g81g3g68g86g3g68g81g3g44g81g87g72g85g81g68g87g76g82g81g68g79g3g54g87g68g81g71g68g85g71g3g85g72g84g88g76g85g72g86g3g68g83g83g85g82g89g68g79g3g69g92g3g68g87g3g79g72g68g86g
29、87g3g26g24g3g8g3g82g73g3g87g75g72g3g80g72g80g69g72g85g3g69g82g71g76g72g86g3g70g68g86g87g76g81g74g3g68g3g89g82g87g72g17g36g87g87g72g81g87g76g82g81g3g76g86g3g71g85g68g90g81g3g87g82g3g87g75g72g3g83g82g86g86g76g69g76g79g76g87g92g3g87g75g68g87g3g86g82g80g72g3g82g73g3g87g75g72g3g72g79g72g80g72g81g87g86g3g
30、82g73g3g87g75g76g86g3g71g82g70g88g80g72g81g87g3g80g68g92g3g69g72g3g87g75g72g3g86g88g69g77g72g70g87g3g82g73g3g83g68g87g72g81g87g3g85g76g74g75g87g86g17g3g44g54g50g3g86g75g68g79g79g3g81g82g87g3g69g72g3g75g72g79g71g3g85g72g86g83g82g81g86g76g69g79g72g3g73g82g85g3g76g71g72g81g87g76g73g92g76g81g74g3g68g81g
31、92g3g82g85g3g68g79g79g3g86g88g70g75g3g83g68g87g72g81g87g3g85g76g74g75g87g86g17g44g54g50g3g27g28g27g16g21g3g90g68g86g3g83g85g72g83g68g85g72g71g3g69g92g3g55g72g70g75g81g76g70g68g79g3g38g82g80g80g76g87g87g72g72g3g44g54g50g18g55g38g3g21g15g3g41g68g86g87g72g81g72g85g86g15g3g54g88g69g70g82g80g80g76g87g87g
32、72g72g3g54g38g3g20g21g15g3g41g68g86g87g72g81g72g85g86g3g90g76g87g75g3g80g72g87g85g76g70g3g76g81g87g72g85g81g68g79g3g87g75g85g72g68g71.g55g75g76g86g3g87g75g76g85g71g3g72g71g76g87g76g82g81g3g70g68g81g70g72g79g86g3g68g81g71g3g85g72g83g79g68g70g72g86g3g87g75g72g3g86g72g70g82g81g71g3g72g71g76g87g76g82g81
33、g3g11g44g54g50g3g27g28g27g16g21g29g20g28g28g21g12g3g68g81g71g3g44g54g50g3g27g28g27g16g25g29g20g28g28g23g15g3g90g75g76g70g75g3g75g68g89g72g3g69g72g72g81g3g87g72g70g75g81g76g70g68g79g79g92g3g85g72g89g76g86g72g71g17g44g54g50g3g27g28g27g3g70g82g81g86g76g86g87g86g3g82g73g3g87g75g72g3g73g82g79g79g82g90g76
34、g81g74g3g83g68g85g87g86g15g3g88g81g71g72g85g3g87g75g72g3g74g72g81g72g85g68g79g3g87g76g87g79g72g3g48g72g70g75g68g81g76g70g68g79g3g83g85g82g83g72g85g87g76g72g86g3g82g73g3g73g68g86g87g72g81g72g85g86g3g80g68g71g72g3g82g73g3g70g68g85g69g82g81g3g86g87g72g72g79g3g68g81g71g3g68g79g79g82g92g3g86g87g72g72g79:
35、 g51g68g85g87g3g20g29g3g37g82g79g87g86g15g3g86g70g85g72g90g86g3g68g81g71g3g86g87g88g71g86g3g90g76g87g75g3g86g83g72g70g76g191g72g71g3g83g85g82g83g72g85g87g92g3g70g79g68g86g86g72g86g3g178g3g38g82g68g85g86g72g3g87g75g85g72g68g71g3g68g81g71g3g191g81g72g3g83g76g87g70g75g3g87g75g85g72g68g71 g51g68g85g87g3
36、g21g29g3g49g88g87g86g3g90g76g87g75g3g86g83g72g70g76g191g72g71g3g83g85g82g83g72g85g87g92g3g70g79g68g86g86g72g86g3g178g3g38g82g68g85g86g72g3g87g75g85g72g68g71g3g68g81g71g3g191g81g72g3g83g76g87g70g75g3g87g75g85g72g68g71 g51g68g85g87g3g24g29g3g54g72g87g3g86g70g85g72g90g86g3g68g81g71g3g86g76g80g76g79g68g
37、85g3g87g75g85g72g68g71g72g71g3g73g68g86g87g72g81g72g85g86g3g90g76g87g75g3g86g83g72g70g76g191g72g71g3g75g68g85g71g81g72g86g86g3g70g79g68g86g86g72g86g3g178g3g38g82g68g85g86g72g3g87g75g85g72g68g71g3g68g81g71g3g191g81g72g3g83g76g87g70g75g3g87g75g85g72g68g71 g51g68g85g87g3g26g29g3g55g82g85g86g76g82g81g68
38、g79g3g87g72g86g87g3g68g81g71g3g80g76g81g76g80g88g80g3g87g82g85g84g88g72g86g3g73g82g85g3g69g82g79g87g86g3g68g81g71g3g86g70g85g72g90g86g3g90g76g87g75g3g81g82g80g76g81g68g79g3g71g76g68g80g72g87g72g85g86g3g20g3g80g80g3g87g82g3g20g19g3g80g801)1)g3 g3g44g87g3g76g86g3g76g81g87g72g81g71g72g71g3g87g75g68g87g
39、15g3g88g83g82g81g3g85g72g89g76g86g76g82g81g15g3g87g75g72g3g80g68g76g81g3g72g79g72g80g72g81g87g3g82g73g3g87g75g72g3g87g76g87g79g72g3g82g73g3g51g68g85g87g3g26g3g90g76g79g79g3g69g72g3g68g79g76g74g81g72g71g3g90g76g87g75g3g87g75g72g3g80g68g76g81g3g72g79g72g80g72g81g87g3g82g73g3g87g75g72g3g87g76g87g79g72g
40、3of Part 1.iv ISO 2012 All rights reserved BS EN ISO 898-2:2012INTERNATIONAL STANDARD ISO 898-2:2012(E)Mechanical properties of fasteners made of carbon steel and alloy steel Part 2: g49g88g87g86g3g90g76g87g75g3g86g83g72g70g76g191g72g71g3g83g85g82g83g72g85g87g92g3g70g79g68g86g86g72g86g3g178g3g38g82g
41、68g85g86g72g3g87g75g85g72g68g71g3g68g81g71g3g191g81g72g3g83g76g87g70g75g3g87g75g85g72g68g711 Scopeg55g75g76g86g3g83g68g85g87g3g82g73g3g44g54g50g3g27g28g27g3g86g83g72g70g76g191g72g86g3g80g72g70g75g68g81g76g70g68g79g3g68g81g71g3g83g75g92g86g76g70g68g79g3g83g85g82g83g72g85g87g76g72g86g3g82g73g3g81g88g8
42、7g86g3g90g76g87g75g3g70g82g68g85g86g72g3g87g75g85g72g68g71g3g68g81g71g3g191g81g72g3g83g76g87g70g75g3g87g75g85g72g68g71g3g80g68g71g72g3g82g73g3g70g68g85g69g82g81g3g86g87g72g72g79g3g68g81g71g3g68g79g79g82g92g3g86g87g72g72g79g3g90g75g72g81g3g87g72g86g87g72g71g3g68g87g3g68g81g3g68g80g69g76g72g81g87g3g87
43、g72g80g83g72g85g68g87g88g85g72g3g85g68g81g74g72g3g82g73g3g20g19g3g131g38g3g87g82g3g22g24g3g131g38g17g49g88g87g86g3g70g82g81g73g82g85g80g76g81g74g3g87g82g3g87g75g72g3g85g72g84g88g76g85g72g80g72g81g87g86g3g82g73g3g87g75g76g86g3g83g68g85g87g3g82g73g3g44g54g50g3g27g28g27g3g68g85g72g3g72g89g68g79g88g68g8
44、7g72g71g3g68g87g3g87g75g68g87g3g68g80g69g76g72g81g87g3g87g72g80g83g72g85g68g87g88g85g72g3g85g68g81g74g72g17g3g44g87g3g76g86g3g83g82g86g86g76g69g79g72g3g87g75g68g87g3g87g75g72g92g3g71g82g3g81g82g87g3g85g72g87g68g76g81g3g87g75g72g3g86g83g72g70g76g191g72g71g3g80g72g70g75g68g81g76g70g68g79g3g68g81g71g3g
45、83g75g92g86g76g70g68g79g3g83g85g82g83g72g85g87g76g72g86g3g68g87g3g72g79g72g89g68g87g72g71g3g68g81g71g18g82g85g3g79g82g90g72g85g3temperatures.g49g50g55g40g3g20g3 g49g88g87g86g3 g70g82g81g73g82g85g80g76g81g74g3 g87g82g3 g87g75g72g3 g85g72g84g88g76g85g72g80g72g81g87g86g3 g82g73g3 g87g75g76g86g3 g83g68g
46、85g87g3 g82g73g3 g44g54g50g3 g27g28g27g3 g75g68g89g72g3 g69g72g72g81g3 g88g86g72g71g3 g76g81g3 g68g83g83g79g76g70g68g87g76g82g81g86g3g85g68g81g74g76g81g74g3 g73g85g82g80g3 g177g24g19g3 g131g38g3 g87g82g3 g14g20g24g19g3 g131g38g17g3 g44g87g3 g76g86g3 g87g75g72g3 g85g72g86g83g82g81g86g76g69g76g79g76g8
47、7g92g3 g82g73g3 g88g86g72g85g86g3 g87g82g3 g70g82g81g86g88g79g87g3 g68g81g3 g72g91g83g72g85g76g72g81g70g72g71g3 g73g68g86g87g72g81g72g85g3 g80g68g87g72g85g76g68g79g86g3 g72g91g83g72g85g87g3g73g82g85g3g87g72g80g83g72g85g68g87g88g85g72g86g3g82g88g87g86g76g71g72g3g87g75g72g3g85g68g81g74g72g3g82g73g3g17
48、7g24g19g3g131g38g3g87g82g3g14g20g24g19g3g131g38g3g68g81g71g3g88g83g3g87g82g3g68g3g80g68g91g76g80g88g80g3g87g72g80g83g72g85g68g87g88g85g72g3g82g73g3g14g22g19g19g131g38g3g87g82g3g71g72g87g72g85g80g76g81g72g3appropriate choices for a given application.NOTE 2 Information for the selection and applicatio
49、n of steels for use at lower and elevated temperatures is given for g76g81g86g87g68g81g70g72g3g76g81g3g40g49g3g20g19g21g25g28g15g3g36g54g55g48g3g41g21g21g27g20g3g68g81g71g3g76g81g3g36g54g55g48g3g36g22g21g19g18g36g22g21g19g48g17This part of ISO 898 is applicable to nuts:g68g12g3 g80g68g71g72g3g82g73g3g70g68g85g69g82g81g3g86g87g72g72g79g3g82g85g3g68g79g79g82g92g3g86g87g72g72g79g30g69g12g3 g90g76g87g75g3g70g82g68g85g86g72g3g87g75g85g72g68g71g3g48g24g3g100g3D g100g3g48g22g28g15g
