1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 3274:2010Aerospace series Pipecoupling 830 Thread end Geometric configurationBS EN 3274:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation
2、 of EN 3274:2010. Itsupersedes BS EN 3274:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/69, Aerospace hydraulic systems, fluids andcomponents.A list of organizations represented on this committee can beobtained on request to its secretary.Thi
3、s publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 67355 9ICS 49.030.10; 49.080Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publishe
4、d under the authority of theStandards Policy and Strategy Committee on 30 November 2010.Amendments issued since publicationDate Text affectedBS EN 3274:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3274 October 2010 ICS 49.080 Supersedes EN 3274:2001English Version Aerospace series - Pipe
5、 coupling 830 - Thread end - Geometric configuration Srie arospatiale - Systme de raccordement 830 - Extrmit de filetage - Configuration gomtrique Luft- und Raumfahrt - Rohrverschraubung 830 - Gewindeende - Konstruktionsblatt This European Standard was approved by CEN on 30 July 2010. CEN members ar
6、e 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 lists and bibliographical references concerning such national standards may be obtained on application to
7、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 responsibility of a CEN member into its own language and notified to the CEN Management Centre has the sam
8、e 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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Po
9、rtugal, Romania, 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 mea
10、ns reserved worldwide for CEN national Members. Ref. No. EN 3274:2010: EBS EN 3274:2010EN 3274:2010 (E) 2 Foreword This document (EN 3274:2010) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accor
11、dance 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 status of a national standard, either by publication of
12、 an identical text or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. 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
13、held responsible for identifying any or all such patent rights. This document supersedes EN 3274:2001. 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
14、, 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. BS EN 3274:2010EN 3274:2010 (E)
15、 3 Contents Page Foreword . 21 Scope 42 Normative references 43 Required characteristics. 44 Designation 11BS EN 3274:2010EN 3274:2010 (E) 4 1 Scope This standard specifies the characteristics of the thread end for 830 pipe couplings, nominal pressure up to 28 000 kPa, for aerospace applications. 2
16、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. EN 2491, Aerospace series Mo
17、lybdenum disulphide dry lubricants Coating methods ISO 5855-3, Aerospace MJ threads Part 3: Limit dimensions for fittings for fluid systems ISO 8788, Aerospace Nuts, metric Tolerances of form and position 3 Required characteristics 3.1 Configuration Dimensions 3.1.1 General Dimensions are in millime
18、tres. Dimensions and tolerances apply before lubrication. Threads and sealing face shall be lubricated according to EN 2491. 3.1.2 Form B According to Figure 1 and Table 1. 3.1.3 Forms C to L According to Figures 2 to 10 and Tables 1 and 2. 3.2 Surface roughness According to Figures 1 to 10. The O-r
19、ing sealing groove shall not contain any radial tool marks. BS EN 3274:2010EN 3274:2010 (E) 5 aThread Figure 1 Form B BS EN 3274:2010EN 3274:2010 (E) 6 Table 1 Code a Thread b d1d2d3e1g1l1r1s1T c 4g6g H11 0 0,2 nom. tol. min. 0 0,2 0,2 0 0,2 h13 04 MJ81 3,2 6,5 6,6 0 0,2 11,05 2 7,3 0,5 10 0,36 05 M
20、J101 4,2 8,5 8,6 12,12 11 06 MJ121,25 5 10,2 10,3 0 0,3 14,38 2,5 9 0,6 13 0,43 08 MJ141,5 6,7 12 12 17,77 3 10,8 0,8 16 10 MJ161,5 8,7 14 14 18,90 17 12 MJ181,5 10,6 16 16 21,10 19 14 MJ201,5 11,4 18 18 24,49 22 0,52 16 MJ221,5 13,3 20 20 26,75 24 18 MJ241,5 15,3 22 22 30,14 27 20 MJ271,5 18 25 25
21、33,53 30 22 MJ301,5 20,8 28 28 35,72 32 25 MJ331,5 22,4 31 31 37,72 34 0,62 28 MJ361,5 25,6 34 34 45,63 41 32 MJ391,5 28,3 37 37 45,63 41 aCorresponds to the pipe nominal outside diameter. bAccording to ISO 5855-3. cAccording to ISO 8788. X as form B aThread Figure 2 Form C BS EN 3274:2010EN 3274:20
22、10 (E) 7 X as form B aThread Figure 3 Form D X as form BY as form D aThread Figure 4 Form E BS EN 3274:2010EN 3274:2010 (E) 8 X as form BY as form D aThread Figure 5 Form F X as form BY as form DZ as form F aThread bOn both faces Figure 6 Form G BS EN 3274:2010EN 3274:2010 (E) 9 X as form BY as form
23、 D aThread Figure 7 Form H X as form BY as form D aThread Figure 8 Form J BS EN 3274:2010EN 3274:2010 (E) 10 X as form BY as form DZ as form F aThread Figure 9 Form K X as form BY as form DZ as form F aThread bOn both faces Figure 10 Form L BS EN 3274:2010EN 3274:2010 (E) 11 Table 2 Code a b1b2b3c1c
24、2d4d5d6d7d8e2e3g2l2l3r2s2s3+ 0,3 0 0 0,1 0,25 0,2 0,2 nom. tol. 0 0,3 0 0,2 0 0,2 0,1 min. min. + 0,3 0 0,2 0,2 + 0,20 h13 h13 04 6 2,9 4,2 4 5 5,5 + 0,80 12 21 8 19 13,2 24,5 2 14,5 18,5 0,5 12 22 05 5 6,5 14 23 10 21 15,5 26,7 15,5 19,5 14 24 06 7 7,5 17 27 12 24 18,9 30,1 2,5 18 22 0,6 17 27 08 8
25、 6 9,5 19 30 14 26 21,1 33,5 3 22 25 0,8 19 30 10 11,5 + 0,20 22 32 16 28 24,5 35,7 23 26 22 32 12 13, 24 34 18 30 26,7 37,27 24 34 14 14,5 27 36 20 32 30,1 39,9 27 36 16 6 16,5 30 38 22 34 33,5 45,6 30 41 18 18,5 32 40 24 36 35,7 32 20 22 34 43 27 39 37,51,2 34 46 22 25 36 46 30 42 39,9 36 25 7 27
26、41 50 33 45 45,6 55,8 41 50 28 30,5 46 52 36 48 51,2 61,3 24,5 28,5 46 55 32 7 33, 50 55 39 51 55,8 4 50 aCorresponds to the pipe nominal outside diameter. 4 Designation EXAMPLE EN3274C05 Number of this standard Form (see Figures 1 to 10) Code (see Table 1) This page deliberately left blankThis page
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