1、BRITISH STANDARDBS EN 4421:2007Aerospace series Studs, in titanium alloy TI-P64001, MoS2 coated, with serrated locking ring in corrosion resisting steel Strength class: 1 100 MPa (at ambient temperature)The European Standard EN 4421:2007 has the status of a British StandardICS 49.030.20g49g50g3g38g5
2、0g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 4421:2007This British Standard was published under the authority of the Standards Policy and Strategy Commi
3、ttee on 31 August 2007 BSI 2007ISBN 978 0 580 55643 2National forewordThis British Standard is the UK implementation of EN 4421:2007. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on
4、this committee can be obtained on request 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.Amendments issued sin
5、ce publicationAmd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4421 June 2007 ICS 49.030.20 English Version Aerospace series - Studs, in titanium alloy TI-P64001, MoS2coated, with serrated locking ring in corrosion resisting steel - Strength class: 1 100 MPa (at ambient tem
6、perature) Srie arospatiale - Goujons, en alliage de titane TI-P64001, revtus MoS2, avec bague de verrouillage dentele, en acier rsistant la corrosion - Classe de rsistance: 1 100 MPa ( temprature ambiante) Luft- und Raumfahrt - Stiftschrauben, aus Titanlegierung TI-P64001, MoS2beschichtet, mit Rings
7、icherung aus korrosionsbestndigem Stahl - Festigkeitsklasse: 1 100 MPa (bei Raumtemperatur) This European Standard was approved by CEN on 26 October 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the st
8、atus 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 Centre or to any CEN member. This European Standard exists in three official versions (English, French, German).
9、 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 official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Repub
10、lic, 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 United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE
11、NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4421:2007: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Req
12、uired characteristics.4 3.1 Configuration Dimensions Tolerances Masses4 3.2 Materials .4 3.3 Surface treatment 4 4 Designation 6 5 Marking .6 6 Technical specification .6 EN 4421:20073 Foreword This document (EN 4421:2007) has been prepared by the Aerospace and Defence Industries Association of Euro
13、pe - Standardization (ASD-STAN). After enquiries and 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 Sta
14、ndard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2007, and conflicting national standards shall be withdrawn at the latest by December 2007. Attention is drawn to the possibility that some of the elements
15、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 organizations of the following countries are bound to implement this Europea
16、n Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Repub-lic, 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 K
17、ingdom. EN 4421:20074 1 Scope This standard specifies the characteristics of studs in TI-P64001, MoS2coated, with serrated locking ring in corrosion resisting steel for aerospace applications. Strength class: 1 100 MPa1)2 Normative references The following referenced documents are indispensable for
18、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. EN 2424, Aerospace series Marking of aerospace products EN 3311, Aerospace series Titanium alloy TI-P6400
19、1 Annealed Bar for machining D 150 mm 2)EN 4458, Aerospace series Studs, MJ threads, in titanium alloy TI-P64001, MoS2coated, with serrated locking ring in corrosion resisting steel Strength class: 1 100 MPa (at ambient temperature) Technical specification ISO 3353, Aerospace Rolled threads for bolt
20、s Lead and runout requirements ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts AMS 5604R, Steel, corrosion resistant, bars, wire, and forgings 18 Cr 9.0 Ni free machining3)3 Required characteristics 3.1 Configuration Dimensions Tolerances Masses See Figure 1 and Tables 1
21、 and 2. Dimensions and tolerances are in millimetres. They apply before MoS2coating. 3.2 Materials Stud: EN 3311 Ring: AMS 5640 3.3 Surface treatment EN 2491 1) Minimum tensile strength of the material at ambient temperature 2Published as ASD Prestandard at the date of publication of this standard 3
22、) Published by: Society of Automotive Engineers, Inc. (SAE), 400 Commonwealth Drive, Warrendale, PA 15096-0001, USA EN 4421:20075 Remove sharp edges 0,1 to 0,4 Ring outer serration Key 1 Nut end threads 2 Pitch diameter 3 Diameter D before rolling 4 Two pitches maximum, runout threads 5 Installation
23、 on threads 6 Marking 7 N: theoretical number of teeth aLocking ring seating against the nut end thread bOptional locking ring guide cRolled dUsed to identify the nut end thread when locking ring guide has been removed eDeletion of a tooth for optional metric identification of stud fBlending radius
24、0,1 to 0,2 Figure 1 Table 1 Thread aA B D E G H J K M N R Code Designation 0,5 min. min. max. max. min. max. min. 2 max. max. min. 050 MJ5 0,8 4h6h 11 7,50 4,50 1,65 5,16 6,85 6,65 7,85 7,70 2,50 0,45 0,35060 MJ6 1 4h6h 13,50 9 5,30 2,35 6,19 7,85 7,65 8,85 8,70 100 3,20 15 0,50 0,40aIn accordance w
25、ith ISO 5855-2. EN 4421:20076 Table 2 Thread code L 050 060 C F C F Length code 0,4 min. max. Mass amin. max.Mass a010 10 7 2,05 012 12 9 2,20 8 3,44 014 14 11 3 2,34 10 3,66 016 16 11,5 2,49 12 4 3,87 018 18 13,5 4,25 2,63 12,5 4,07 020 20 6,25 2,78 14,5 5,3 4,28 022 22 8,25 2,92 7,3 4,48 025 25 11
26、,25 3,13 10,3 4,77 028 28 14,25 3,34 13,3 5,08 030 30 16,25 3,48 15,3 5,26 035 35 21,25 3,84 20,3 5,76 040 40 14 26,25 4,19 15 25,3 6,25 aMass quoted in kg/1 000 parts. 4 Designation EXAMPLE Description block Identity block STUD EN4421050 025 Number of this standard Thread code (see Table 1) Length
27、code (see Table 2) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style A, as indicated on Figure 1. 6 Technical specification EN 4458, plus ring rotational integrity test. EN 4421:2007blankBS EN 4421:2007BSI389 Chiswick Hig
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