BS EN 2907-1996 Nuts bihexagonal self-locking in heat resisting steel FE-PA92HT (A286) silver plated - Classification 1 100 MPa (at ambient temperature) 650 C《镀银的FE-PA92HT(A286)耐热钢.pdf

1、BRITISH STANDARD AEROSPACE SERIES BS EN 2907:1996 Nuts, bihexagonal, self-locking, in heat resisting steel FE-PA92HT (A286), silver plated Classification: 1100MPa (at ambient temperature)/650 C The European Standard EN2907:1995 has the status of a BritishStandardBSEN2907:1996 This BritishStandard, h

2、aving been prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comesintoeffect on 15February1996 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/12 Draft for comment88/76214DC IS

3、BN 0 580 25018 0 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, upon which the following bodies were represented: Association of Electronics, Telecommunications and Busine

4、ss Equipment Industries British Industrial Fasteners Federation Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBSEN2907:1996 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword

5、2 1 Scope 3 2 Normative references 3 3 Required characteristics 3 4 Designation 5 5 Marking 5 6 Technical specification 5 Figure1 4 Table1 4 List of references Inside back coverBSEN2907:1996 ii BSI 12-1999 National foreword This BritishStandard has been prepared by Technical Committee ACE/12 and is

6、the English language version of EN2907:1995 Aerospace series Nuts, bihexagonal, self-locking, in heat resisting steel FE-PA92HT (A286), silver plated Classification:1100MPa (at ambient temperature)/650 C, published by the European Committee for Standardization (CEN). EN2907:1995 was produced as a re

7、sult of international discussions in which the UnitedKingdom took an active part. Cross-references There are no BritishStandards corresponding to the European Standards referred to in the text. A British Standard does not purport to include all the necessary provisions of a contract. Users of Britis

8、h Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Publication referred to Corresponding BritishStandard ISO5855-2:1988 BS6293 Aerospace MJ threads Part2:1994 Limit dimensions for bolts and nuts Sum

9、mary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to6, 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 amendment table o

10、n the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2907 September 1995 ICS 49.040.20 Descriptors: Aircraft industry, fastener, nut: fastener, self locking nut, steel, heat resistant steel, classification, characteristic, dimension, surface treatment, screw thread, designat

11、ion English version Aerospace series Nuts, bihexagonal, self-locking, in heat resisting steel FE-PA92HT (A286), silver plated Classification:1100MPa (at ambient temperature)/650 C Srie arospatiale Ecrous bihexagonaux, freinage interne, en acier rsistant chaud FE-PA92HT (A286), argents Classification

12、: 1100MPa ( temprature ambiante)/650 C Luft- und Raumfahrt Zwlfkantmuttern, selbstsichernd, aus hochwarmfestem Stahl FE-PA92HT (A286), versilbert Klasse: 1100MPa (bei Raumtemperatur)/650 C This European Standard was approved by CEN on1995-03-02. CEN members are bound to comply with the CEN/CENELEC I

13、nternal Regulations 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 Central Secretariat or to any CEN me

14、mber. This 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 Central Secretariat has the same status as the official versions. CEN membe

15、rs are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches

16、 Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 Copyright reserved to CEN members Ref. No. EN2907:1995 EEN2907:1995 BSI 12-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and vo

17、tes carried out in accordance with the rules of this Association, this Standard has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a nati

18、onal standard, either by publication of an identical text or by endorsement, at the latest by March1996, and conflicting national standards shall be withdrawn at the latest by March1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European S

19、tandard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, UnitedKingdom.EN2907:1995 BSI 12-1999 3 1 Scope This standard specifies the characteristics of self-locking bihexagonal nuts in FE-PA9

20、2HT, silver plated, for aerospace applications. Classification:1100MPa 1) /650 C 2) 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publicat

21、ions are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply 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. ISO 4095, Faste

22、ners for aerospace construction Bi-hexagonal wrenching configuration. ISO 5855-2, Aerospace MJ threads Part2: Limit dimensions for bolts and nuts. EN 2399, Heat resisting steel FE-PA92-HTR m U 900MPa Bars for forged boltsDk 25mm Aerospace series 3) . EN 2424, Aerospace series Marking of aerospace pr

23、oducts. EN 2786, Aerospace series Electrolytic silver plating of fasteners 4) . EN 3004, Aerospace series Nuts, self-locking, in heat resisting steel FE-PA92HT (A286) Classification:1100MPa/650 C Technical specification 4) . EN 3639, Aerospace series Heat resisting alloy FE-PA2601 Softened and cold

24、worked Wire for forged fastenersDk 15mm900MPak R m k 1100MPa 4) . 3 Required characteristics 3.1 Configuration Dimensions Tolerances Masses See Figure 1 and Table 1. Dimensions and tolerances are in millimetres. They apply after silver plating. 3.2 Materials EN2399 or EN3639 3.3 Surface treatment EN

25、2786 Thickness: external surfaces:5m to15m; threadU MJ6:5mmin. on thread flanks; threadMJ5: shall show complete coverage, without thickness requirement. 1) Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cracking when tested wit

26、h a bolt of a higher strength class. 2) Maximum test temperature of the parts 3) Published as AECMA Standard at the date of publication of this standard 4) Published as AECMA Prestandard at the date of publication of this standardEN2907:1995 4 BSI 12-1999 Table 1 Figure 1 Thread a E F H J K L M N Y

27、Z Mass Kg/1000 parts Code Designation max. min. max. max. min. min. min. max. 050 MJ50,84H6H 5,8 5,2 7 7 9,1 8,3 1,2 2 4,9 0,1 0,2 1,63 060 MJ614H5H 7,1 6,3 8 8,1 10,6 9,8 2,3 5,5 2,33 070 MJ714H5H 8,1 7,3 9 9,1 12,1 11,3 2,6 6,1 3,19 080 MJ814H5H 9,1 8,3 10 10,4 13,6 12,8 2,8 6,9 4,34 100 MJ101,254

28、H5H 11,1 10,3 12 13 16,8 15,8 3,1 8,8 0,13 0,3 7,69 120 MJ121,254H5H 13,1 12,3 14 15 19,9 18,8 1,4 3,5 10,1 14,58 140 MJ141,54H5H 15,2 14,4 17 17,5 23 21,9 1,7 4 12,6 0,15 19,79 a In accordance with ISO5855-2. In the self-locking zone, the tolerances apply before forming out-of-round.EN2907:1995 BSI

29、 12-1999 5 4 Designation EXAMPLE: NOTEIf necessary, the code19005 shall be placed between the description block and the identity block. 5 Marking EN2424, style A, as indicated on Figure 1. 6 Technical specification EN30046 blankBSEN2907:1996 BSI 12-1999 List of references See national foreword.BS EN

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