1、BS EN 4125:2010ICS 49.030.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Nuts, anchor, self-locking, fixed, two lug, reduced series, with incremental counterbore, in heat resisting steel, MoS2lubricated Classification: 900 MPa (at ambient tem
2、perature) / 315 CLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04, Uncontrolled Copy, (c) BSIThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 28 February2010 BSI 2010ISBN 978 0 580 70532 8Amendments/corrigenda issued since p
3、ublicationDate CommentsBS EN 4125:2010National forewordThis British Standard is the UK implementation of EN 4125:2010.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee ca
4、n be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.Licensed Copy: Wang Bin, ISO/EXCHANGE CHI
5、NA STANDARDS, 07/06/2010 08:04, Uncontrolled Copy, (c) BSIBS EN 4125:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4125 January 2010 ICS 49.030.30 English Version Aerospace series - Nuts, anchor, self-locking, fixed, two lug, reduced series, with incremental counterbore, in heat resisting
6、 steel, MoS2lubricated - Classification: 900 MPa (at ambient temperature) / 315 C Srie arospatiale - crous river, freinage interne, fixes, double patte, srie rduite, avec chambrage trs profond, en acier rsistant chaud, lubrifis MoS2- Classification : 900 MPa ( temprature ambiante) / 315 C Luft- und
7、Raumfahrt - Annietmuttern, selbstsichernd, beiderseitig verkrzter Flansch, mit tiefer zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert - Klasse: 900 MPa (bei Raumtemperatur) / 315 C This European Standard was approved by CEN on 21 November 2009. CEN members are bound to comply wit
8、h 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 Management Ce
9、ntre 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 offic
10、ial 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, Slov
11、akia, 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 worldwide
12、 for CEN national Members. Ref. No. EN 4125:2010: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04, Uncontrolled Copy, (c) BSIBS EN 4125:2010EN 4125:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Required characteristics .54 Designation 75 Marking .86 T
13、echnical specification .8Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04, Uncontrolled Copy, (c) BSIBS EN 4125:2010EN 4125:2010 (E) 3 Foreword This document (EN 4125:2010) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-S
14、TAN). 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 the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the sta
15、tus of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2010, and conflicting national standards shall be withdrawn at the latest by July 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject
16、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 organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgar
17、ia, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, 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. Licensed Copy: Wang
18、Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04, Uncontrolled Copy, (c) BSIBS EN 4125:2010EN 4125:2010 (E) 4 1 Scope This standard specifies the characteristics of self-locking two lug, reduced series, incremental counterbored fixed anchor nuts, in heat resisting steel, MoS2lubricated. Classific
19、ation: 900 MPa1) / 315 C2). 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 of the referenced document (including any amendments) applies
20、. EN 2398, Aerospace series Heat resisting steel FE-PA2601 (X6NiCrTiMoV26-15) Rm 900 MPa Bars for machined bolts D 25 mm EN 2399, Aerospace series 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 249
21、1, Aerospace series Molybdenum disulphide dry lubricants Coating methods EN 3638, Aerospace series Heat resisting alloy FE-PA2601 (X6NiCrTiMoV26-15) Consumable electrode remelted Solution and precipitation treated Sheet, strip and plate 0,5 mm a 10 mm EN 3639, Aerospace series Heat resisting alloy F
22、E-PA2601 Softened and cold worked Wire for forged fasteners D 15 mm 900 MPa Rm 1100 MPa3)EN 9100, Quality Management Systems Requirements for Aviation, Space and Defense Organizations EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts TR 3791, A
23、erospace series Materials for self-locking nuts, threaded inserts and screw thread inserts of temperature classes 425 C4) ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 5858, Aerospace Nuts, self-locking, with maximum operating temperature less than or equal to 425
24、C Procurement specification ISO 8788, Aerospace Nuts, metric Tolerances of form and position 1) Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cracking when tested with a bolt of a higher strength class. 2) Maximum temperature
25、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 ASD-STAN Prestandard at the date of publication of this standard. 4) Publishe
26、d as ASD-STAN Technical Report at the date of publication of this standard. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04, Uncontrolled Copy, (c) BSIBS EN 4125:2010EN 4125:2010 (E) 5 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Di
27、mensions and tolerances are expressed in millimetres and apply before MoS2lubrication. Details of form not stated are at the manufacturers option. 3.2 Tolerances of form and position ISO 8788. 3.3 Materials EN 2398, EN 2399, EN 3638, EN 3639 or TR 3791. 3.4 Surface treatment EN 2491, thickness not s
28、pecified. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04, Uncontrolled Copy, (c) BSIBS EN 4125:2010EN 4125:2010 (E) 6 These values in micrometres apply before surface treatment. The values do not apply to threads and sheared edges the surface texture of which will be achieve
29、d by usualmanufacturing methods. Remove sharp edges 0,1 to 0,4. Key 1 Marking 2 Radius or chamfer 3 Thread 4 Form out-of-round in this area to achieve self-locking. Tooling marks are permitted in this area. Figure 1 6,3 3,2 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04, Unc
30、ontrolled Copy, (c) BSIBS EN 4125:2010EN 4125:2010 (E) 7 Table 1 Diameter code Thread a A E F G Jb K L M Nc R Mass d Counterbore code min. min. max. max. max. max. max. 050 MJ50,8-4H6H 04 4 7 14 5,5 7,3 9 19,2 8,5 1,1 2,51,2 06 6 10,5 1,7 08 8 12,5 2,1 10 10 14,5 2,5 060 MJ61-4H5H 04 4 8 16 6,5 8,7
31、10 22,2 9,4 1,35 3 1,8 06 6 11,4 2,1 08 8 13,4 2,5 10 10 15,4 3,0 aIn accordance with ISO 5855-2. In the self-locking zone, the tolerances apply before forming out-of-round. bIs to sharp corners (chamfered) or point of tangency (radiused). cIs applicable at the rivet hole location. dApproximate valu
32、es (kg/1 000 pieces), calculated on the basis of 7,85 kg/dm3, given for information purposes only. 4 Designation EXAMPLE Description block NUT Identity block EN4125-06008 Number of this standard Diameter code (see Table 1) Counterbore code (see Table 1) NOTE If necessary the originator code I9005 sh
33、all be placed between the description block and the identity block. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04, Uncontrolled Copy, (c) BSIBS EN 4125:2010EN 4125:2010 (E) 8 5 Marking EN 2424, style N. See Figure 1. 6 Technical specification ISO 5858, except for: Approval
34、of manufacturers: see EN 9100; Qualification of products: see EN 9133. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04, Uncontrolled Copy, (c) BSIBS EN 4125:2010This page has been intentionally left blankLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 07/06/2010 08:04,
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