1、BRITISH STANDARD AEROSPACE SERIES BS EN 2914:1996 Washers, flat, large diameter, in heat resisting steel, passivated The European Standard EN2914:1996 has the status of a BritishStandard ICS49.040.20BS EN2914:1996 This BritishStandard, having been prepared under the directionof the Engineering Secto
2、rBoard, was published underthe authority of the Standards Board and comesintoeffect on 15June1996 BSI12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/12 Draft for comment 88/76306 DC ISBN 0 580 25938 2 Committees responsible for this BritishStandard T
3、he preparation of this BritishStandard was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, upon which the following bodies were represented: Association of Electronic, Telecommunications and Business Equipment Industries British Industrial Fasteners Federation Min
4、istry of Defence Society of British Aerospace Companies Amendments issued since publication Amd. No. Date CommentsBS EN2914:1996 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Scope 3 2 Normative references 3 3 Required characteristics 3 4 Des
5、ignation 4 5 Marking 4 6 Quality assurance 4 Figure 1 3 Table 1 4 List of references Inside back coverBS EN2914:1996 ii BSI 12-1999 National foreword This BritishStandard has been prepared by Technical Committee ACE/12 and is the English language version of EN2914:1996 Aerospace series Washers, flat
6、, large diameter, in heat resisting steel, passivated, published by the European Committee for Standardization (CEN). EN2914:1996 was produced as a result of international discussions in which the United Kingdom took an active part. A British Standard does not purport to include all the necessary pr
7、ovisions 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. Cross-references Publication referred to Corresponding BritishStandard EN2000:1991 BS EN2000:1992 Quality as
8、surance. EN aerospace products. Approval of the quality system of manufacturers EN2424:1995 BS EN2424:1995 Marking of aerospace products Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, the EN title page, pages2 to4, an inside back cover and a back cover.
9、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 cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN2914 March1996 ICS49.040.20 Descriptors: Aircraft industry, washer, plain washer,
10、heat resistant steel, dimension, designation English version Aerospace series Washers, flat, large diameter, in heat resisting steel, passivated Srie arospatiale Rondelles plates larges, en acier rsistant chaud, passives Luft- und Raumfahrt Scheiben, flach, groer Auendurchmesser, aus hochwarmfestem
11、Stahl, passiviert This European Standard was approved by CEN on1995-08-31. 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 lists and bibliog
12、raphical 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 responsibility of a
13、 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Sp
14、ain, 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 1996 All rights of reproduction and communication in any form and by any means reserved in al
15、l countries to CEN and its members Ref. No. EN2914:1996 EEN2914:1996 BSI 12-1999 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, this Standard h
16、as successively received the approval of the National Associations and the Official Services of the members 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 endorsement, at
17、the latest by September1996, and conflicting national standards shall be withdrawn at the latest by September1996. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denma
18、rk, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN2914:1996 BSI 12-1999 3 1 Scope This standard specifies the characteristics of flat washers, large diameter, in heat resisting steel, passivated,
19、for maximum operating temperature650 C, for aerospace applications. 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
20、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. EN2000, Aerospace series Qualit
21、y assurance EN aerospace products Approval of the quality system of manufacturers. EN2171, Heat resisting steel FE-PA92-HT R m U 900MPa Bars Aerospace series 1) . EN2175, Heat resisting steel FE-PA93-HT Solution treated and precipitation treated Sheets and strips ak3mm Aerospace series 1) . EN2424,
22、Aerospace series Marking of aerospace products. EN2516, Aerospace series Passivation of corrosion resistant steels and decontamination of nickel base alloys 1) . 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are expressed in millim
23、etres and apply after surface treatment. 3.2 Materials EN2171 or EN2175 3.3 Surface treatment EN2516 1) Published as AECMA Standard at the date of publication of this standard Figure 1 EN2914:1996 4 BSI 12-1999 Table 1 4 Designation EXAMPLE: NOTEIf necessary, the codeI9005 shall be placed between th
24、e description block and the identity block. 5 Marking EN2424, style G 6 Quality assurance EN2000 Diameter code D 1 D 2 D 3 S Mass b H13 h14 nom. Tol. Thickness code 10% a 030 3,2 9 3,8 06 0,6 0,26 10 1 0,44 040 4,2 12 4,8 06 0,6 0,47 10 1 0,78 050 5,2 15 6 10 1 1,22 16 1,6 1,95 060 6,2 18 7,4 12 1,2
25、 2,11 16 1,6 2,81 070 7,2 21 8,4 12 1,2 2,78 16 1,6 3,71 080 8,2 24 9,4 16 1,6 5,02 25 2,5 7,85 100 10,2 30 11,6 20 2 9,81 25 2,5 12,3 120 12,2 36 13,8 20 2 14,1 25 2,5 17,7 a Includes also the flatness tolerance. b Approximate values (kg/1000 pieces), calculated on the basis of7,85kg/dm 3 , given f
26、or information purposes only + 0,1 0 + 0,2 0 + 0,3 0BS EN2914:1996 BSI 12-1999 List of references See national foreword.BS EN 2914:1996 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents
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