EN 2647-2006 en Aerospace series - Nuts hexagonal self-locking ball seat in alloy steel cadmium plated MoS2 lubricated - Classification 900 MPa (at ambient temperature) 235 《航空航天系列.pdf

1、BRITISH STANDARD AEROSPACE SERIESBS EN2647:2006Nuts, hexagonal, self-locking, ball seat, in alloy steel, cadmium plated, MoS2 lubricated Classification: 900 MPa (at ambient temperature)/235 CThe European Standard EN 2647:2006 has the status of a British StandardICS 49.030.30g49g50g3g38g50g51g60g44g4

2、9g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2647:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 J

3、uly 2006 BSI 2006ISBN 0 580 48534 XNational forewordThis British Standard is the official English language version of EN 2647:2006. It supersedes BS EN 2647:1995 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening

4、systems, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promul

5、gate them in the UK.A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled

6、 “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance wit

7、h a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the d

8、ocument was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2647 June 2006 ICS 49.030.30 Supersedes EN 2647:1995 English Version Aerospace series - Nuts, hexagonal, self-locking, ball seat, in alloy steel, cadmium plated, MoS2

9、 lubricated - Classification: 900 MPa (at ambient temperature)/235 C Srie arospatiale - crous hexagonaux, freinage interne, orientables, en acier alli, cadmis, lubrifis MoS2 - Classification: 900 MPa ( temprature ambiante)/235 C Luft- und Raumfahrt - Sechskantmuttern, selbstsichernd, fr Neigungsausg

10、leich, aus legiertem Stahl, verkadmet, MoS2-geschmiert - Klasse: 900 MPa (bei Raumtemperatur)/235 C This European Standard was approved by CEN on 3 February 2006. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standar

11、d 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 member. This European Standard exists in three official versions (English, French, Ge

12、rman). 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 members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, D

13、enmark, Estonia, Finland, France, Germany, Greece, 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 NORMAL

14、ISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2647:2006: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Required

15、characteristics.5 4 Designation 7 5 Marking .7 6 Technical specification .7 Annex A (informative) Assembly .8 EN 2647:20063 Foreword This European Standard (EN 2647:2006) has been prepared by the AeroSpace and Defense Industries Asso-ciation of Europe - Standardization (ASD-STAN). After enquiries an

16、d votes carried out in accordance with the rules of this Association, this Standard has re-ceived 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 stand

17、ard, either by publication of an identical text or by endorsement, at the latest by December 2006, and conflicting national standards shall be withdrawn at the latest by December 2006. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent right

18、s. 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, Cyprus, Czech Republi

19、c, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer-land and the United Kingdom. This document supersedes EN 2647:1995. EN 2647:2006

20、4 1 Scope This standard specifies the characteristics of self-locking hexagonal nuts with ball seat in alloy steel, cadmium plated, MoS2lubricated. Classification: 900 MPa1) / 235 C2) They are intended to be used with washers to EN 2648 or suitable parts, see Annex A. 2 Normative references The foll

21、owing referenced documents are indispensable for the application of this document. For dated refer-ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5855-2, Aerospace MJ threads Part 2: Limit dimension

22、s for bolts and nuts ISO 5858, Aerospace Self-locking nuts with maximum operating temperature 425 C Procurement specification ISO 8788, Aerospace Nuts, metric Tolerances of form and position EN 2000, Aerospace series Quality assurance EN aerospace products Approval of the quality system of manufactu

23、rers EN 2133, Aerospace series Cadmium plating of steels, with maximum specified tensile strength 1 450 MPa, copper, copper alloys and nickel alloysEN 2424, Aerospace series Marking of aerospace products EN 2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods EN 2648, Aerospac

24、e series Washers, concave, in alloy steel, cadmium plated EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace stan-dard parts TR 3791, Aerospace series Materials for all metal self-locking nuts and thin wall inserts of temperature classes 425 C3)1) Corresponds

25、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 withstand, without permanent alteration to is original characteristics, after ambien

26、t temperature has been restored. The maximum temperature is conditioned by the cadmium plating. 3) Published as AECMA Technical Report at the date of publication of this standard EN 2647:20065 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tol

27、erances are expresses in millimetres and apply after cadmium plating but before MoS2lu-brication. Details of form not stated are at the manufacturers option. 3.2 Tolerances of form and position See ISO 8788. 3.3 Materials See TR 3791. 3.4 Surface treatments EN 2133, 5 m min. on threads and all surfa

28、ces which can be contacted by a 20 mm diameter ball. On all other surfaces, a continuous deposit shall be present. EN 2491, thickness not specified. EN 2647:20066 Remove sharp edges 0,1 to 0,4. Key 1 Marking (Optional location, at the manufacturers discretion) 2 Form out-of-round in this area to ach

29、ieve the self-locking torque requirementb3 Thread 4 Chamfer, radius or broken edge 5 Spherical aThese values in micrometres apply before surface treatment. They do not apply to threads the surface texture of which will be as achieved by usual manufacturing methods. bTooling marks are permitted in th

30、is area Figure 1 Table 1 EbFbG H J M N P R T Diameter code Threadamin. 0,2 max. min. min. min. min. 05,0Massc050 MJ50,8-4H6H 6,5 6 10,3 7,05 5,5 1,7 2 2,05 8 7,5 1,7 060 MJ61-4H6H 7,6 7 h12 13 8,1 6,5 2,5 2,3 2,7 9 8,4 2,5 080 MJ81-4H6H 10,9 10 17 9,7 8,5 3 3,2 2,5 12,5 11,75 6,5 100 MJ101,25-4H6H 1

31、3,2 12 21 11,95 10,5 4 3,3 2,95 16 15,1 11,3 120 MJ121,25-4H6H 15,5 14 h13 24 13,46 12,5 4,5 4,5 2,65 18 16,9 17,4 a In accordance with ISO 5855-2. In self-locking zone the tolerance apply before forming out-of-round. b These dimensions apply before forming out-of-round, but finished nuts shall fit

32、a standard wrench. c Approximate values (k/1 000 pieces), given for information purposes only. EN 2647:20067 4 Designation EXAMPLE Description block Identity block NUT EN2647 060 Number of this standard Code (see Table 1) Note If necessary, the code I9005 shall be placed between the designation bloc

33、k and the identity block. 5 Marking EN 2424, style N plus diameter code. See Figure 1. 6 Technical specification ISO 5858, except for: Approval of manufacturers: see EN 2000; Qualification of products, nut and washer (EN 2648): see EN 9133. EN 2647:20068 Annex A (informative) Assembly A.1 Dimensions

34、 See Figure A.1 and Table A.1. Figure A.1 Table A.1 V W Diameter code max. min. 050 8,25 3,05 060 9,1 3,5 080 11,4 4 100 13,95 4,75 120 16,25 5,25 A.2 Examples See Figures A.2 and A.3. Figure A.2 Figure A.3 EN 2647:2006blankBS EN 2647:2006BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards In

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