1、BRITISH STANDARD AEROSPACE SERIES BS EN 3237:1998 Inserts, thin wall, self-locking, long, in heat resisting nickel base alloy NI-P100HT (Inconel 718), silver plated internal thread The European Standard EN 3237:1998 has the status of a British Standard ICS 49.030.30BSEN3237:1998 This British Standar
2、d, having been prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15 May 1998 BSI 04-1999 ISBN 0 580 29760 8 National foreword This British Standard is the English language version of EN3237:1998. The UK partici
3、pation in its preparation was entrusted by Technical Committee ACE/12, Aerospace fasteners and fastening systems, to Subcommittee ACE/12/1, Aerospace fasteners and fastening systems (international), which has the responsibility to: aid enquirers to understand the text; present to the responsible int
4、ernational/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request t
5、o its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BS
6、I Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary
7、 of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 5 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cov
8、er. Amendments issued since publication Amd. No. Date CommentsBSEN3237:1998 BSI 04-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 3237 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3237 January 1998 ICS 49.030.99 Descriptors: Aircraft industry, joinin
9、g adaptor, nickel alloy, heat resistant material, characteristic, surface treatment, dimension, dimensional tolerance, designation, marking English version Aerospace series Inserts, thin wall, self-locking, long, in heat resisting nickel base alloy NI-P100HT (Inconel 718), silver plated internal thr
10、ead Srie arospatiale Douilles filetes, paroi mince, freinage interne, longues, en alliage rsistant chaud base de nickel NI-P100HT (Inconel 718), filetage intrieur argent Luft- und Raumfahrt Gewindeeinstze, dnnwandig, selbstsichernd, lang, aus hochwarmfester Nickelbasislegierung NI-P100HT (Inconel 71
11、8), Innengewinde versilbert This European Standard was approved by CEN on 18 September 1997. 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
12、 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, German). A version in any other language made by translation under the r
13、esponsibility 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, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
14、Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any m
15、eans reserved worldwide for CEN national Members. Ref. No. EN 3237:1998 EEN3237:1998 BSI 04-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association,
16、 this Standard has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, 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 by e
17、ndorsement, at the latest by July 1998, and conflicting national standards shall be withdrawn at the latest by July 1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium
18、, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 0 Introduction 3 1 Scope 3 2 Normative references 3 3 Required characteristics 3 4 Designation 5
19、 5 Marking 5 6 Technical specification 5 Figure 1 4 Table 1 4EN3237:1998 BSI 04-1999 3 0 Introduction For design and installation procedures see EN3676 and EN3298. 1 Scope This standard specifies the characteristics of self-locking, long, thin wall inserts, in NI-P100HT, with silver plated internal
20、thread, for aerospace applications. Maximum test temperature: 550 C 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed
21、hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO 965-1, ISO general purpose
22、metric screw threads Tolerances Part 1: Principles and basic data. ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts. EN 2404, Heat resisting nickel base alloy NI-P100-HT Solution treated and precipitation treated Bars Aerospace series 1) . EN 2424, Aerospace series Markin
23、g of aerospace products. EN 2786, Aerospace series Electrolytic silver plating of fasteners 2) . EN 3297, Aerospace series Inserts, thin wall, self-locking, MJ threads, in heat resisting nickel base alloy NI-P100HT (Inconel 718) Technical specification 2) . EN 3298, Aerospace series Inserts, thin wa
24、ll, self-locking Installation and removal procedure 2) . EN 3676, Aerospace series Inserts, thin wall, self-locking Design standard 2) . TR 3198, Aerospace series Manufacturers identification monograms and marks for EN aerospace products 3) . 3 Required characteristics 3.1 Configuration Dimensions T
25、olerances Masses See Figure 1 and Table 1. Dimensions and tolerances are in millimetres. They apply after silver plating. 3.2 Material EN2404 3.3 Surface treatment EN2786, internal thread and counterbore diameterC Thickness: internal threads $ MJ6: 5 4m min. on thread flanks; internal threads MJ5: s
26、hall show complete coverage, without thickness requirement; counterbore diameter C: without thickness requirement. 1) Published as AECMA Standard at the date of publication of this standard 2) Published as AECMA Prestandard at the date of publication of this standard 3) Published as AECMA Technical
27、Report at the date of publication of this standardEN3237:1998 4 BSI 04-1999 Table 1 Figure 1 A Internal thread a B External thread b C D E F G H J Mass kg/1 000 parts . Code Designation Designation max. minor diameter 0,3 min. min. 050 MJ50,8-4H6H M71-4g 5,973 5,2 13,15 2,75 2 1,25 4,56 18 1,685 060
28、 MJ61-4H5H M81-4g 7,016 6,2 15,35 2,95 2,1 1,5 5,44 24 2,488 070 MJ71-4H5H M91-4g 8,056 7,2 17,75 3,35 2,4 1,75 6,44 27 3,365 080 MJ81-4H5H M101-4g 9,056 8,2 20,15 3,75 2,6 2 7,28 28 4,571 100 MJ101,25-4H5H M121-4g 11,11 10,25 24,85 4,45 3 2,5 9,14 33 7,433 a In accordance with ISO 5855-2. In the se
29、lf-locking zone, the tolerances apply before forming out-of-round. b In accordance with ISO 965-1, except maximum minor diameter which shall be as stated.+ 0,150+ 0,40+ 0,60EN3237:1998 BSI 04-1999 5 4 Designation EXAMPLE: NOTEIf necessary, the code19005 shall be placed between the description block
30、and the identity block. 5 Marking EN2424, style G Manufacturers identification grooves shall be V-section 0,1 mm to 0,2 mm deep as indicated in Figure 1, spacing see TR3198 list3. 6 Technical specification EN3297BS EN 3237:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution
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