1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 7719:2012Prevailing torque type all-metal hexagon regular nuts Property classes 5, 8 and 10 BS EN ISO 7719:2012 BRITISH STANDARDNational forewordThis British Standard i
2、s the UK implementation of EN ISO 7719:2012.It supersedes BS EN ISO 7719:1998 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee FME/9, Fasteners.A list of organizations represented on this committee can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 publicat
3、ion does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 77984 8ICS 21.060.20Compliance with a British Standard cannot confer immunity from
4、legal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7719 December 2012 ICS 21.060.20 Supersedes EN ISO
5、7719:1997English Version Prevailing torque type all-metal hexagon regular nuts - Property classes 5, 8 and 10 (ISO 7719:2012) crous hexagonaux normaux autofreins tout mtal - Classes de qualit 5, 8 et 10 (ISO 7719:2012) Sechskantmuttern mit Klemmteil (Ganzmetallmuttern), Typ 1 - Festigkeitsklassen 5,
6、 8 und 10 (ISO 7719:2012) This European Standard was approved by CEN on 3 December 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 lis
7、ts 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 Yu
9、goslav 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 EUROP
10、EN 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 7719:2012: EBS EN ISO 7719:2012EN ISO 7719:2012 (E) 3 Foreword This do
11、cument (EN ISO 7719:2012) 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 of an ident
12、ical 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 held respon
13、sible for identifying any or all such patent rights. This document supersedes EN ISO 7719:1997. 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, Croatia, Cypru
14、s, 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 the United
15、Kingdom. Endorsement notice The text of ISO 7719:2012 has been approved by CEN as a EN ISO 7719:2012 without any modification. BS EN ISO 7719:2012ISO 7719:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 13 Dimensions . 14 Requirements and reference I
16、nternational Standards 35 Designation . 3Bibliography . 4BS EN ISO 7719:2012ISO 7719:2012(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 carried o
17、ut 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. ISO c
18、ollaborates 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 International S
19、tandards. 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 elements
20、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 7719 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 12, Fasteners with metric internal thread.This third edition cancels and replaces th
21、e second edition (ISO 7719:1997), of which it constitutes a minor revision.iv ISO 2012 All rights reservedBS EN ISO 7719:2012INTERNATIONAL STANDARD ISO 7719:2012(E)Prevailing torque type all-metal hexagon regular nuts Property classes 5, 8 and 101 ScopeThis International Standard specifies the chara
22、cteristics of prevailing torque type all-metal hexagon regular nuts, with threads from M5 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 with the exceptio
23、n of hmaxcorrespond to those given in ISO 4032.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 normati
24、vely 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 261, ISO general purpose metr
25、ic screw threads General planISO 724, ISO 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 scre
26、w threads Tolerances Part 2: Limits of sizes 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, Tolerance
27、s for fasteners Part 1: Bolts, screws, studs 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 coatings3 DimensionsSee Figu
28、re 1 and Table 1.Symbols and descriptions of dimensions are specified in ISO 225. ISO 2012 All rights reserved 1BS EN ISO 7719:2012ISO 7719:2012(E)aPrevailing torque element, shape at the discretion of the manufacturer.b = 15 to 30.c = 90 to 120.Figure 1Table 1 DimensionsDimensions in millimetresFil
29、etage DM5 M6 M8 M10 M12 (M14)aM16 (M18)aM20a(M22)aM24 M30 M36Pb0,8 1 1,25 1,5 1,75 2 2 2,5 2,5 2,5 3 3,5 4damax. 5,75 6,75 8,75 10,80 13,00 15,10 17,30 19,50 21,60 23,70 25,90 32,40 38,90min. 5,00 6,00 8,00 10,00 12,00 14,00 16,00 18,00 20,00 22,00 24,00 30,00 36,00dwmin. 6,88 8,88 11,63 14,63 16,63
30、 19,64 22,49 24,90 27,70 31,40 33,25 42,75 51,11e min. 8,79 11,05 14,38 17,77 20,03 23,36 26,75 29,56 32,95 37,29 39,55 50,85 60,79hmax. 5,30 5,90 7,10 9,00 11,60 13,20 15,20 17,00 19,00 21,00 23,00 26,90 32,50min. 4,80 5,40 6,44 8,04 10,37 12,10 14,10 15,10 16,90 18,10 20,20 24,30 29,40mwmin. 3,52
31、3,92 5,15 6,43 8,30 9,68 11,28 12,08 13,52 14,50 16,16 19,44 23,52smax. 8,00 10,00 13,00 16,00 18,00 21,00 24,00 27,00 30,00 34,00 36,00 46,00 55,00min. 7,78 9,78 12,73 15,73 17,73 20,67 23,67 26,16 29,16 33,00 35,00 45,00 53,80aThe size in parentheses should be avoided, if possible.bP is the pitch
32、of the thread.2 ISO 2012 All rights reservedBS EN ISO 7719:2012ISO 7719:2012(E)4 Requirements and reference International StandardsSee Table 2.Table 2 Requirements and reference International StandardsMaterial SteelGeneral requirements International StandardISO 8992Thread Tolerance class 6HInternati
33、onal StandardsISO 261, ISO 724, ISO 965-2Mechanical and performance propertiesProperty class 5, 8, 10International StandardsISO 898-2, ISO 2320Tolerance Product grade For D M16: AFor D M16: BInternational StandardISO 4759-1Finish CoatingAs processedRequirements for electroplating are specified in IS
34、O 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.Acceptabili
35、ty Acceptance inspection is specified in ISO 3269.5 DesignationEXAMPLE A prevailing torque type all-metal hexagon regular nut, with thread M12 and property class 8 is designated as follows:Prevailing torque type hexagon regular nut ISO 7719 - M12 - 8 ISO 2012 All rights reserved 3BS EN ISO 7719:2012
36、ISO 7719:2012(E)Bibliography1 ISO 4032, Hexagon regular nuts (style 1) Product grades A and B 4 ISO 2012 All rights reservedBS EN ISO 7719:2012This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other
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