1、BS EN 3637:2008ICS 49.030.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Nuts, self-locking, bi-hexagonal (doublereduced), in heatresisting nickel basealloy NI-P101HT(Waspaloy), silverplated, Classification:1210 MPa/730 CIncorporating corrige
2、ndum June 2009National forewordThis British Standard is the UK implementation of EN 3637:2008.The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be obtained on reques
3、t to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 3637:2008This British Standard was published under the
4、authority of the Standards Policy andStrategy Committee on 30 November 2008 BSI 2009ISBN 978 0 580 67275 0Amendments/corrigenda issued since publicationDate Comments 30 June 2009 Implementation of CEN Correction Notice 04 March 2009EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3637 August 200
5、8 ICS 49.030.30 English Version Aerospace series - Nuts, self-locking, bi-hexagonal (double reduced), in heat resisting nickel base alloy - NI-P101HT (Waspaloy), silver plated, Classification: 1210 MPa/730 C Srie arospatiale - crous bihexagonaux, auto-freinant (double rduit), en alliage rsistant cha
6、ud base de nickel - NI-P101HT (Waspaloy), argents, Classification: 1210 MPa/730 C Luft- und Raumfahrt - Zwlfkantmuttern, selbstsichernd (Doppel reduziert), aus hochwarmfester Nickelbasislegierung - NI-P101HT (Waspaloy), versilbert, Klasse: 1210 MPa/730 C This European Standard was approved by CEN on
7、 2 February 2008. 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 lists and bibliographical references concerning such national standards ma
8、y be obtained on application to the CEN 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 the responsibility of a CEN member into its own language and notified to the C
9、EN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla
10、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation i
11、n any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3637:2008: EEN 3637:2008 (E) 2 Contents Page Foreword 3 1 Scope and field of application 4 2 References 4 3 Required characteristics .4 3.1 Configuration dimensions tolerances .4 3.2 Material .4 3.3 Surface treatmen
12、t 4 4 Designation 6 5 Marking .6 6 Technical specification .6 BS EN 3637:2008EN 3637:2008 (E) 3 Foreword This document (EN 3637:2008) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with
13、 the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identi
14、cal text or by endorsement, at the latest by February 2009, and conflicting national standards shall be withdrawn at the latest by February 2009. 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
15、 responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
16、 France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. The CEN Correction Notice 04 March 2009 provided a revised English language text in
17、corporating the following editorial correction. The Figure 1 and its key have been updated. BS EN 3637:2008EN 3637:2008 (E) 4 1 Scope and field of application This standard specifies the dimensions of self-locking, silver-coated bi-hexagonal nuts with MJ-thread in heat resisting nickel base alloy NI
18、-P101HT for aerospace applications. Maximum test temperature of the material 730 C. 2 References EN 2424 Aerospace series Marking of aerospace products1)EN 2786 Aerospace series Electrolytic silver plating of fasteners1)EN 2959 Aerospace series Heat resisting alloy Ni-PH1302 (NiCr20Co13Mo4Ti3Al) Sol
19、ution treated and cold worked Bar for forged fasteners 3 mm D 30 mm2)EN 3005 Aerospace series Nuts, self-locking, MJ threads, in heat resisting nickel base alloy NI-PH1302 (Waspaloy), silver plated or uncoated Classification: 1 210 MPa (at ambient temperature)/730 C Technical specification EN 3220 A
20、erospace series Heat resisting nickel base alloy (Ni-P101HT) cold worked and softened Bar and wire for continuous forging or extrusion for fasteners 3 D 30 mm1)ISO 4095 Aerospace Bihexagonal drives Wrenching configuration Metric series ISO 5855-1 Aerospace MJ threads Part 1: General requirements ISO
21、 5855-2 Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts 3 Required characteristics 3.1 Configuration dimensions tolerances Configuration shall be in accordance with the figure; dimensions, tolerances and masses shall conform with the figure and the table. Details of form, not stated
22、, are at the manufacturers option. Dimensions are after coating. 3.2 Material Heat resisting nickel base alloy NI-P101HT to EN 2959 or EN 3220. 3.3 Surface treatment Silver coat to EN 2786, coating thickness 5 m to 15 m. On nuts MJ6 and larger, the coating thickness shall be not less than 5 m, measu
23、red at the pitch diameter. 1) Published as ASD standard at the date of publication of this standard. 2) Published as ASD Prestandard at the date of publication of this standard.BS EN 3637:2008EN 3637:2008 (E) 5 MJ5 nuts shall show complete coating coverage on the threads. Key 1 Pitch Diameter 2 Self
24、-locking feature at manufacturers option tool marks acceptable 3 Marking on the flange 4 Bi-hexagonal wrenching configuration ISO 4095 on length M a 6 Places b All forms of entry (radius or chamfer) optional within these limiting dimensions. c These values are to be applied before silver coating. Th
25、reads surface will be achieved by normal methods of manufacture d Thread in conformity with ISO 5855 part 1 and 2. In self-locking zone the tolerances apply before forming out of round e Bearing surface may be flat or concave, but shall not be convex Figure 1 Configuration 9 12BS EN 3637:2008EN 3637
26、:2008 (E) 6 Table 1 Dimensions and masses Dimensions in millimetres Thread E Fa H J K L Mb N y z Mass kg/1 000 Code Designation min max max max min min max Part max 050 MJ 5 x 0,8 4H6H 5,2 5,8 7 7 9,1 8,3 1,2 2 4,9 0,1 0,2 1,63 060 MJ 6 x 1,0 4H5H 6,3 7,1 8 8,1 10,6 9,8 1,2 2,3 5,5 0,1 0,2 2,33 070
27、MJ 7 x 1,0 4H5H 7,3 8,1 9 9,1 12,1 11,3 1,2 2,6 6,1 0,1 0,2 3,19 080 MJ 8 x 1,0 4H5H 8,3 9,1 10 10,4 13,6 12,8 1,2 2,8 6,9 0,1 0,2 4,34 100 MJ 10 x 1,25 4H5H 10,3 11,1 12 13 16,8 15,8 1,2 3,1 8,8 0,13 0,3 7,69 120 MJ 12 x 1,25 4H5H 12,3 13,1 14 15 19,9 18,8 1,4 3,5 10,1 0,13 0,3 14,58 140 MJ 14 x 1,
28、5 4H5H 14,4 15,2 17 17,5 23 21,9 1,7 4 12,6 0,13 0,3 19,79 aBi-hexagonal configuration in conformity with ISO 4095 over length “M“. bWrench pad engagement. 4 Designation Each bi-hexagonal nut shall only be designated as in the following example: Description block Identity block NUT EN 3637 - 050 Num
29、ber of EN Standard Thread code NOTE If necessary, the design code I 9005 may be introduced between the description block and the identity block. 5 Marking Each bi-hexagonal nut shall be marked in accordance to EN 2424, Class A. 6 Technical specification The bi-hexagonal nuts shall conform to the req
30、uirements of EN 3005. BS EN 3637:2008blankBSI GroupHeadquarters 389 Chiswick High Road, London, W4 4AL, UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 standardsBSI - British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK
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