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1、BRITISH STANDARD BS EN ISO 7040:1998 Prevailing torque type hexagon nuts (with non-metallic insert), style 1 Property classes 5, 8 and 10 The European Standard EN ISO 7040:1997 has the status of a British Standard ICS 21.060.20 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:0
2、0 2006, Uncontrolled Copy, (c) BSI BS EN ISO 7040:1998 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 May 1998 BSI 03-1999 ISBN 0 580 29095 6 National foreword This
3、British Standard is the English language version of EN ISO 7040:1997. It is identical with ISO 7040:1997. The UK participation in its preparation was entrusted by Technical Committee FME/9, Bolts, nuts and accessories, to Subcommittee FME/9/10, Male and female prevailing torque fasteners, which has
4、the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in th
5、e UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding
6、 or European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalog
7、ue. 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. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document compri
8、ses a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, page ii, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amend
9、ment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 7040:1998 BSI 03-1999i Contents Page National foreword Inside front cover Foreword 2 For
10、eword ii Text of EN ISO 70401 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NO
11、RM EN ISO 7040 November 1997 ICS 21.060.20 Descriptors: See ISO document English version Prevailing torque type hexagon nuts (with non-metallic insert), style 1 Property classes 5, 8 and 10 (ISO 7040:1997) Ecrous hexagonaux autofreins (avec anneau non mtallique), style 1 Classes de qualit 5, 8 et 10
12、 (ISO 7040:1997) Sechskantmuttern mit Klemmteil (mit nichtmetallischem Einsatz), Typ 1 Festigkeitsklasse 5, 8 und 10 (ISO 7040:1997) This European Standard was approved by CEN on 23 October 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions
13、 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 Central Secretariat or to any CEN member. This European Standard exists in three offic
14、ial 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, B
15、elgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secre
16、tariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 7040:1997 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 7040
17、:1997 BSI 03-1999 2 Foreword The text of the International Standard ISO 7040:1997 has been prepared by Technical Committee ISO/TC 2 “Fasteners” in collaboration with Technical Committee CEN/TC 185 “Threaded and non-threaded mechanical fasteners and accessories”, the secretariat of which is held by D
18、IN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 1998, and conflicting national standards shall be withdrawn at the latest by May 1998. According to the CEN/CENELEC Internal Regulations, th
19、e national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United King
20、dom. Endorsement notice The text of the International Standard ISO 7040:1997 has been approved by CEN as a European Standard without any modifications. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Foreword 2 1Scope1 2Normative references1 3Dim
21、ensions1 4Requirements and reference International Standards3 5 Designation3 Annex A (informative) BibliographyInside back cover Annex ZA (normative) Normative references to international publications with their relevant European publicationsInside back cover Figure 12 Table 1 Dimensions2 Table 2 Re
22、quirements and reference International Standards2 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 7040:1997 ii BSI 03-1999 Fore
23、word ISO (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 out through ISO technical committees. Each member body interested in a subject for which a techn
24、ical 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 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
25、electrotechnical standardization. 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. International Standard ISO 7040 was pre
26、pared by Technical Committee ISO/TC 2, Fasteners, subcommittee SC 1, Mechanical properties of fasteners. This second edition cancels and replaces the first edition (ISO 7040:1983), which has been technically revised. Annex A of this International Standard is for information only. Descriptors: Fasten
27、ers, nuts (fasteners), self-locking nuts, hexagonal nuts, specifications, dimensions, designation. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 7040:1997 BSI 03-19991 1 Scope This International Standard specifies the characteristic
28、s of prevailing torque type hexagon nuts (with non-metallic insert), style 1, 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. NOTEThe dimensions of the nuts correspo
29、nd to those given in ISO 4032 plus prevailing torque feature. If other specifications are required, they should be selected from existing International Standards, for example ISO 261, ISO 965-2, ISO 2320 and ISO 4759-1. 2 Normative references The following standards contain provisions which, through
30、 reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applyin
31、g the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 225:1983, Fasteners Bolts, screws, studs and nuts Symbols and designations of dimensions. ISO 261:1), ISO general purpose metric screw threads Genera
32、l plan. ISO 965-2:2), ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general purpose bolt and nut threads Medium quality. ISO 2320:1997, Prevailing torque type steel hexagon nuts Mechanical and performance properties. ISO 3269:1988, Fasteners Acceptance inspection. I
33、SO 4042:3), Fasteners Electroplated coatings. ISO 4759-1:4), Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C. ISO 6157-2:1995, Fasteners Surface discontinuities Part 2: Nuts. ISO 8992:1986, Fasteners General requirements for bolts, screws, studs and nuts. 3 D
34、imensions See Figure 1 and Table 1. Symbols and designations of dimensions are specified in ISO 225. 1) To be published. (Revision of ISO 261:1973) 2) To be published. (Revision of ISO 965-2:1980) 3) To be published. (Revision of ISO 4042:1989) 4) To be published. (Revision of ISO 4759-1:1978) Licen
35、sed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 7040:1997 2 BSI 03-1999 Table 1 Dimensions Figure 1 Dimensions in millimetres Thread (d)M3M4M5M6M8M10M12(M14)aM16M20M24M30M36 Pb0,50,70,811,251,51,75222,533,54 damax. 3,454,65,756,758,7510,81
36、315,117,321,625,932,438,9 min. 3,004,05,006,008,0010,01214,016,020,024,030,036,0 dwmax. 4,575,886,888,8811,6314,6316,6319,6422,4927,733,2542,7551,11 emin. 6,017,668,7911,0514,3817,7720,0323,3626,7532,9539,5550,8560,79 hmax. 4,56,006,808,009,5011,914,917,019,122,827,132,638,9 min. 4,025,526,227,428,9
37、211,214,215,917,820,725,030,136,4 mcmax. 2,152,94,44,96,448,0410,3712,114,116,920,224,329,4 mwdmin. 1,722,323,523,925,156,438,39,6811,2813,5216,1619,4423,52 smax. 5,507,008,0010,0013,0016,0018,0021,0024,0030,00364655,0 min. 5,326,787,789,7812,7315,7317,7320,6723,6729,16354553,8 a The size in bracket
38、s should be avoided if possible. b P is the pitch of the thread. c Minimum thread height. d Minimum wrenching height. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 7040:1997 BSI 03-19993 4 Requirements and reference International St
39、andards See Table 2. Table 2 Requirements and reference International Standards 5 Designation EXAMPLE A prevailing torque type hexagon nut, style 1, with non-metallic insert, thread M12 and property class 8 is designated as follows: Prevailing torque type hexagon nut ISO 7040 M12 8 MaterialNut bodyS
40、teel InsertFor example, polyamid General requirementsInternational StandardISO 8992 ThreadTolerance6H International StandardsISO 261, ISO 965-2 Mechanical and performance properties Property class5810 Style decisive for mechanical properties style 1style 1style 1 International StandardISO 2320 Toler
41、ancesProduct gradeFor d M16 : B International StandardISO 4759-1 FinishAs processed Requirements for electroplated coatings are covered in ISO 4042. If different electroplating requirements are desired or if requirements are needed for other finishes, they should be negotiated between customer and s
42、upplier. Limits for surface discontinuities are covered in ISO 6157-2. AcceptabilityFor acceptance procedure, see ISO 3269. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:
43、23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 7040:1997 BSI 1998 Annex A (informative) Bibliography 1 ISO 4032:1986, Hexagon nuts, style 1 Product grades A and B. Annex ZA (normative) Normative references to international publications with their relevant European publications This European St
44、andard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply
45、to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. PublicationYearTitleENYear ISO 2251983Fasteners Bolts, screws, studs and nuts Symbols and designations of dimensions EN 202251991 ISO 232
46、01997Prevailing torque type steel hexagon nuts Mechanical and performance properties EN ISO 23201997 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:39:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 7040:1998 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Instituti
47、on BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should
48、 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 inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee
49、 responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to