1、BS EN 4126:2010ICS 49.030.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Nuts, anchor, self-locking, floating, two lug, reduced series, with incremental counterbore, in heat resisting steel, MoS2lubricated Classification: 900 MPa (at ambient
2、temperature) / 315 CThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 28 February2010 BSI 2010ISBN 978 0 580 70531 1Amendments/corrigenda issued since publicationDate CommentsBS EN 4126:2010National forewordThis British Standard is the UK implement
3、ation of EN 4126:2010.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 can be obtained onrequest to its secretary.This publication does not purport to include all the ne
4、cessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 4126:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4126 January 2010 ICS 49.030.30 English Version Aerospace series - Nu
5、ts, anchor, self-locking, floating, two lug, reduced series, with incremental counterbore, in heat resisting steel, MoS2lubricated - Classification: 900 MPa (at ambient temperature) / 315 C Srie arospatiale - crous river, freinage interne, flottants, double patte, srie reduite, avec chambrage trs pr
6、ofond, en acier rsistant chaud, lubrifis MoS2- Classification : 900 MPa ( temprature ambiante) / 315 CLuft- und Raumfahrt - Annietmuttern, selbstsichernd, beweglich, beiderseitiger verkrzter Flansch, mit tiefer zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert - Klasse: 900 MPa (be
7、i Raumtemperatur) / 315 C This European Standard was approved by CEN on 21 November 2009. 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 li
8、sts and bibliographical references concerning such national standards may 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 re
9、sponsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
10、 Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, 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
11、Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4126:2010: EBS EN 4126:2010EN 4126:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Required characteristics .54 De
12、signation 75 Marking .86 Technical specification .8BS EN 4126:2010EN 4126:2010 (E) 3 Foreword This document (EN 4126:2010) 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
13、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 identical text or
14、 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 of patent rights. CEN and/or CENELEC shall not be held responsible for id
15、entifying 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, G
16、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 4126:2010EN 4126:2010 (E) 4 1 Scope This standard specifies the characteristics of mini
17、ature self-locking two lug, reduced series, incremental counterbored floating anchor nuts, in heat resisting steel, MoS2lubricated. Classification: 900 MPa1) / 315 C2). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated referen
18、ces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. 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 resisti
19、ng 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 (X6NiCrTiMoV26-15) Consumable
20、 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 MPa3)EN 3816, Aerospace series Steel FE-PA3601 (X6CrNiTi18-10) Air melted
21、Softened and cold rolled Sheet and strip a 3 mm Rm 800 MPa 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, Aerospace series Materials for
22、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 C Procurement specification IS
23、O 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 that the nut is able to withst
24、and, 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) Published as ASD-STAN Technical Report
25、 at the date of publication of this standard. BS EN 4126:2010EN 4126:2010 (E) 5 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are expressed in millimetres and apply before MoS2lubrication. Details of form not stated are at the manu
26、facturers option. 3.2 Tolerances of form and position ISO 8788. 3.3 Materials Threaded element: EN 2398, EN 2399, EN 3638, EN 3639 or TR 3791. Cage: EN 3638 or EN 3816. 3.4 Surface treatment EN 2491, thickness not specified. BS EN 4126:2010EN 4126:2010 (E) 6 These values in micrometres apply before
27、surface treatment. The values do not apply to threads and sheared edges the surface texture of which will be achieved by usualmanufacturing methods. Remove sharp edges 0,1 to 0,4. Key 1 Marking 2 Float inclusive 3 Cage 4 Threaded element 5 Form out-of-round in this area to achieve self-locking. Tool
28、ing marks are permitted in this area. 6 Thread 7 Radius or chamfer Figure 1 6,3 3,2 BS EN 4126:2010EN 4126:2010 (E) 7 Table 1 Diameter code Thread aA E F G JbK L M NcP R T Z MassdCounterbore Radialfloat Designation Code min. min. max. max. max. max. nom. min. max. min. 050 MJ50,8-4H6H 04 4 7 14 5,5
29、7,3 12 19,28,5 0,9 6,5 2,5 4,5 0,5 1,5 06 6 10,5 2,0 08 8 12,5 2,4 10 10 14,5 2,7 060 MJ61-4H5H 04 4 8 16 6,5 8,7 13,5 21,29,4 0,9 7,5 2,5 4,6 0,5 2,0 06 6 11,4 2,4 08 8 13,4 2,8 10 10 15,4 3,2 aIn accordance with ISO 5855-2. In the self-locking zone, the tolerances apply before forming out-of-round
30、. bIs to sharp corners (chamfered) or point of tangency (radiused). cIs applicable at the rivet hole location. dApproximate values (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 EN4126-06008 N
31、umber of this standard Diameter code (see Table 1) Counterbore code (see Table 1) NOTE If necessary the originator code I9005 shall be placed between the description block and the identity block. BS EN 4126:2010EN 4126:2010 (E) 8 5 Marking EN 2424, style N. See Figure 1. 6 Technical specification IS
32、O 5858, except for: Approval of manufacturers: see EN 9100; Qualification of products: see EN 9133. BS EN 4126:2010This page has been intentionally left blankBS EN4126:2010BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - British Standards Ins
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