1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 7040:2012Prevailing torque type hexagon r e g u l a r n u t s ( w i t h n o n - m e t a l l i c insert) - Property classes 5, 8 and 10 (ISO 7040:2012)Copyright European
2、 Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 7040:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 7040:2012.It supersedes BS EN ISO 7040
3、:1998 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee FME/9, Fasteners.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contrac
4、t. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 77981 7ICS 21.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authorit
5、y of theStandards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN S
6、TANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7040 December 2012 ICS 21.060.20 Supersedes EN ISO 7040:1997English Version Prevailing torque type hexagon regular nuts (with non-metallic insert) - Property classes 5, 8 and 10 (ISO 7040:2012) crous hexagonaux normaux autofreins ( anneau non mtallique)
7、 - Classes de qualit 5, 8 et 10 (ISO 7040:2012)Sechskantmuttern mit Klemmteil (mit nichtmetallischem Einsatz), Typ 1 - Festigkeitsklassen 5, 8 und 10 (ISO 7040:2012) This European Standard was approved by CEN on 3 December 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulatio
8、ns 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 be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. T
9、his 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 to the CEN-CENELEC Management Centre has the same status as the official versions. CEN me
10、mbers are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Port
11、ugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United 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 a
12、ny means reserved worldwide for CEN national Members. Ref. No. EN ISO 7040:2012: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 7040:2012EN ISO 7040:2012 (E) 3 Forewo
13、rd This document (EN ISO 7040:2012) 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 status of a national standard, either by publication o
14、f an identical text or by endorsement, at the latest by June 2013, and conflicting national standards shall be withdrawn at the latest by June 2013. 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 h
15、eld responsible for identifying any or all such patent rights. This document supersedes EN ISO 7040:1997. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croa
16、tia, Cyprus, Czech Republic, 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 t
17、he United Kingdom. Endorsement notice The text of ISO 7040:2012 has been approved by CEN as a EN ISO 7040:2012 without any modification. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from I
18、HS-,-,-BS EN ISO 7040:2012ISO 7040:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 13 Dimensions . 24 Requirements and reference International Standards 35 Designation . 3Bibliography . 4Copyright European Committee for Standardization Provided by IH
19、S under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 7040:2012ISO 7040:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of prepa
20、ring International Standards is normally carried 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 l
21、iaison with ISO, also take part in the work. 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
22、technical committees is to prepare International 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 d
23、rawn to the possibility that some of the elements 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 7040 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 12, Fasteners with metric internal
24、 thread.This third edition cancels and replaces the second edition (ISO 7040:1997), of which it constitutes a minor revision.iv ISO 2012 All rights reservedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted wit
25、hout license from IHS-,-,-BS EN ISO 7040:2012INTERNATIONAL STANDARD ISO 7040:2012(E)Prevailing torque type hexagon regular nuts (with non-metallic insert) Property classes 5, 8 and 101 ScopeThis International Standard specifies the characteristics of prevailing torque type hexagon regular nuts (with
26、 non-metallic insert), with threads from M3 up to and including M36, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 5, 8 and 10.NOTE The dimensions of the nuts correspond to those given in ISO 4032 plus prevailing torque fe
27、ature.If other specifications are required, they can be selected from existing International Standards, for example ISO 261, ISO 724, ISO 898-2, ISO 965-2, ISO 2320 and ISO 4759-1.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are
28、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 261, ISO general purpose metric screw threads General planISO 724, ISO
29、 general-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 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of si
30、zes for general purpose external and internal screw threads Medium qualityISO 2320, Prevailing torque type steel nuts Mechanical and performance propertiesISO 3269, Fasteners Acceptance inspectionISO 4042, Fasteners Electroplated coatingsISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, st
31、uds and nuts Product grades A, B and CISO 6157-2, Fasteners Surface discontinuities Part 2: NutsISO 8992, Fasteners General requirements for bolts, screws, studs and nutsISO 10683, Fasteners Non-electrolytically applied zinc flake coatings ISO 2012 All rights reserved 1Copyright European Committee f
32、or Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 7040:2012ISO 7040:2012(E)3 DimensionsSee Figure 1 and Table 1. Symbols and descriptions of dimensions are specified in ISO 225.a Prevailing torque ele
33、ment, shape at the discretion of the manufacturer.b = 15 to 30.c = 90 to 120.Figure 1Table 1 DimensionsDimensions in millimetresThread DM3 M4 M5 M6 M8 M10 M12 (M14)aM16 M20 M24 M30 M36Pb0,5 0,7 0,8 1 1,25 1,5 1,75 2 2 2,5 3 3,5 4damax. 3,45 4,60 5,75 6,75 8,75 10,80 13,00 15,10 17,30 21,60 25,90 32,
34、40 38,90min. 3,00 4,00 5,00 6,00 8,00 10,00 12,00 14,00 16,00 20,00 24,00 30,00 36,00dwmin. 4,57 5,88 6,88 8,88 11,63 14,63 16,63 19,64 22,49 27,70 33,25 42,75 51,11e min. 6,01 7,66 8,79 11,05 14,38 17,77 20,03 23,36 26,75 32,95 39,55 50,85 60,79hmax. 4,50 6,00 6,80 8,00 9,50 11,90 14,90 17,00 19,10
35、 22,80 27,10 32,60 38,90min. 4,02 5,52 6,22 7,42 8,92 11,20 14,20 15,90 17,80 20,70 25,00 30,10 36,40m min. 2,15 2,90 4,40 4,90 6,44 8,04 10,37 12,10 14,10 16,90 20,20 24,30 29,40mwmin. 1,72 2,32 3,52 3,92 5,15 6,43 8,30 9,68 11,28 13,52 16,16 19,44 23,52smax. 5,50 7,00 8,00 10,00 13,00 16,00 18,00
36、21,00 24,00 30,00 36,00 46,00 55,00min. 5,32 6,78 7,78 9,78 12,73 15,73 17,73 20,67 23,67 29,16 35,00 45,00 53,80aThe size in parentheses should be avoided, if possible.bP is the pitch of the thread.2 ISO 2012 All rights reservedCopyright European Committee for Standardization Provided by IHS under
37、license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 7040:2012ISO 7040:2012(E)4 Requirements and reference International StandardsSee Table 2.Table 2 Requirements and reference International StandardsMaterial Nut body SteelInsert For example, p
38、olyamideGeneral requirements International Standard ISO 8992ThreadTolerance class 6HInternational Standards ISO 261, ISO 724, ISO 965-2Mechanical and performance propertiesProperty classD M16: BInternational Standard ISO 4759-1Finish CoatingAs processedRequirements for electroplating are specified i
39、n 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 surface discontinuities are specified in ISO 6157-2.Accepta
40、bility Acceptance inspection is specified in ISO 3269.5 DesignationEXAMPLE A prevailing torque type hexagon regular nut, with non-metallic insert, thread M12 and property class 8 is designated as follows:Prevailing torque type hexagon regular nut ISO 7040 - M12 - 8 ISO 2012 All rights reserved 3Copy
41、right European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 7040:2012ISO 7040:2012(E)Bibliography1 ISO 4032, Hexagon regular nuts (style 1) Product grades A and B4 ISO 2012 All rights
42、reservedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 7040:2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo
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44、ankCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BSI is the independent national body responsible for preparing British Standards and other standards-related publications, info
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