1、BS EN 3537:2010ICS 49.030.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Nuts, anchor, self-locking, fixed, two lug, with counterbore, in heat resisting steel, MoS lubricated Classification: 1 100 MPa (at ambient tem-perature)/315 CThis Briti
2、sh Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 March2010 BSI 2010ISBN 978 0 580 70740 7Amendments/corrigenda issued since publicationDate CommentsBS EN 3537:2010National forewordThis British Standard is the UK implementation of EN 3537:2010.The UK part
3、icipation in its preparation was entrusted to TechnicalCommittee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract.
4、Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 3537:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3537 February 2010 ICS 49.030.30 English Version Aerospace series - Nuts, anchor, self-locking, fixed,
5、 two lug, with counterbore, in heat resisting steel, MoS2lubricated - Classification: 1 100 MPa (at ambient temperature)/315 C Srie arospatiale - crous river, freinage interne, fixes, double patte, avec chambrage, en acier rsistant chaud, lubrifis MoS2- Classification: 1 100 MPa ( temprature ambiant
6、e)/315 C Luft- und Raumfahrt - Annietmuttern, selbstsichernd, beiderseitiger Flansch, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert - Klasse: 1 100 MPa (bei Raumtemperatur)/315 C This European Standard was approved by CEN on 18 December 2009. CEN members are bound to comply
7、 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 may be obtained on application to the CEN Managemen
8、t 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 CEN Management Centre has the same status as the o
9、fficial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
10、Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved world
11、wide for CEN national Members. Ref. No. EN 3537:2010: EBS EN 3537:2010EN 3537:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Required characteristics .54 Designation 75 Marking .86 Technical specification .8BS EN 3537:2010EN 3537:2010 (E) 3 Foreword This document (EN 3537:2010
12、) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of th
13、e 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 identical text or by endorsement, at the latest by August 2010, and conflicting national standards shall be withdrawn at the latest by Aug
14、ust 2010. 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 responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards or
15、ganizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
16、Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 3537:2010EN 3537:2010 (E) 4 1 Scope This European Standard specifies the characteristics of two lug, counterbored fixed anchor nuts, with a self-locking feature achieved by forming the upper portion out-o
17、f-round, in heat resisting steel, MoS2lubricated. Classification: 1 100 MPa 1) / 315 C 2)2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition
18、of the referenced document (including any amendments) applies. ISO 3223, Aerospace Nuts, anchor, self-locking, fixed, two lug, with counterbore, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/235 C, 1 100 MPa (at ambient temperature)/315 C and 1 100 MPa (at ambient temperature)
19、/425 C Dimensions ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 8788, Aerospace Nuts, metric Tolerances of form and position EN 2398, Aerospace series Heat resisting steel FE-PA2601 (X6NiCrTiMoV26-15) Rm 900 MPa Bars for machined bolts D 25 mm EN 2399, Aerospace se
20、ries Heat resisting steel FE-PA2601 (X4NiCrTiMoV26-15) Rm 900 MPa Bars for forged bolts D 25 mm EN 2424, Aerospace series Marking of aerospace products EN 2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods EN 3638, Aerospace series Heat resisting alloy FE-PA2601 (X6NiCrTiMoV
21、26-15) Consumable electrode remelted Solution and precipitation treated Sheet, strip and plate 0,5 mm a 10 mm EN 3639, Aerospace series Heat resisting alloy FE-PA2601 Softened and cold worked Wire for forged fasteners D 15 mm 900 MPa Rm 1 100 MPa 3)EN 9100, Aerospace series Quality management system
22、s Requirements (based on ISO 9001:2000) and Quality systems Model for quality assurance in design, development, production, installation and servicing (based on ISO 9001:1994) 1) Corresponds to strength class of the associated bolt, the 100 per cent load of which it is able to withstand, when tested
23、 at ambient temperature, without breaking or cracking. 2) Maximum temperature that the nut is able to withstand, without permanent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the surface treatment. 3) Published as
24、 ASD-STAN Prestandard at the date of publication of this standard. BS EN 3537:2010EN 3537:2010 (E) 5 EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts TR 3791, Aerospace series Materials for self-locking nuts, threaded inserts and screw thread
25、inserts of temperature classes 425 C 4) 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are: in conformity with ISO 3223, expressed in millimetres and apply before MoS2lubrication. Form and position tolerances shall be in conformity
26、with ISO 8788 and those specified in Table 1. 3.2 Materials EN 2398, EN 2399, EN 3638, EN 3639 or TR 3791 3.3 Surface treatment EN 2491, thickness not specified. 4) Published as ASD-STAN Technical Report at the date of publication of this standard. BS EN 3537:2010EN 3537:2010 (E) 6 These values in m
27、icrometres apply before surface treatment. The values do not apply to threads and sheared edges the surface texture of which will be achieved by usual manufacturing methods. Remove sharp edges 0,1 to 0,4. Details of form not stated are at the manufacturers option. Key 1 Marking 2 Radius or chamfer 3
28、 Thread 4 Form out-of-round in this area to achieve the self-locking. Tooling marks are permitted in this area. 5 Bearing face of the nut 6 Alternatives: countersunk rivet holes (when specified by purchaser) may be dimpled or cut countersunk (at manufacturers option). Figure 1 6 6,3 3,2 BS EN 3537:2
29、010EN 3537:2010 (E) 7 Table 1 Diameter code Thread a E F G H Jb K L M Nc R S V Mass kg/1000 pieces approx. min.min. max. max. max. max. max. aux. 0,25 030 MJ30,5-4H6H 6 12 d d 4,6 6 17,2 3,2 1 2,5 2,5 4,8 0,45 040 MJ40,7-4H6H 8,5 17 4,4 2,2 6,2 8 23,2 5,8 1,15 050 MJ50,8-4H6H 9,5 19 5,5 2,4 7,3 9 25
30、,2 6,9 3 1,30 060 MJ61-4H5H 11 22 6,5 2,7 8,7 10 29,2 8,1 1,2 3,5 2,10 080 MJ81-4H5H 8,5 10,9 13 9,9 1,5 3 5,7 4,40 100 MJ101,25-4H5H 13 26 10,5 3 12,9 16,2 35,2 12 1,6 5 3,5 6,6 7,65 aIn accordance with ISO 5855-2. In the self-locking zone, the tolerances apply before forming out-of-round. bIs to s
31、harp corners (chamfered) or point of tangency (radiused). cIs applicable at the rivet hole location. dDiameter code 030 does not have a counterbore. 4 Designation EXAMPLE Description block NUT Identity block EN3537060 Number of this standard Hole code (see Table 2) Diameter code (see Table 1) NOTE I
32、f necessary the originator code I9005 shall be placed between the description block and the identity block. Table 2 Option Code Plain rivet holes (hyphen) Countersunk or dimpled rivet holesK BS EN 3537:2010EN 3537:2010 (E) 8 5 Marking EN 2424, style N. See Figure 1. 6 Technical specification ISO 585
33、8-2, except for: Approval of manufacturers: see EN 9100; Qualification of products: see EN 9133. BS EN 3537:2010This page has been intentionally left blankBS EN3537:2010BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - British Standards Instit
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