1、BS EN 3903:2017Aerospace series Washers,laminated, in corrosionresisting steelBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 3903:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 3903:2017. The UK participation in its
2、preparation was entrusted to TechnicalCommittee ACE/12, Aerospace fasteners and fastening systems. A list of organizations represented on 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 resp
3、onsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 92616 7 ICS 49.030.50Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Stand
4、ards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 3903:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3903 March 2017 ICS 49.030.50 English Version Aerospace series - Washers, laminated, in corrosion resistin
5、g steel Srie Arospatiale - Rondelles pelables, en acier rsistant la corrosion Luft- und Raumfahrt - Scheiben aus Schichtblech aus korrosionsbestndigem Stahl This European Standard was approved by CEN on 11 March 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which st
6、ipulate 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 the CEN-CENELEC Management Centre or to any CEN member. This Europea
7、n 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-CENELEC Management Centre has the same status as the official versions. CEN members are t
8、he national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Roman
9、ia, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form
10、 and by any means reserved worldwide for CEN national Members. Ref. No. EN 3903:2017 EBS EN 3903:2017EN 3903:2017 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Required characteristics 4 4 Designation 6 5 Marking . 6 6 Quality assurance 6 BS EN 3903:2017EN 3903:2017
11、(E) 3 European foreword This document (EN 3903:2017) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the Na
12、tional 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 an identical text or by endorsement, at the latest by September 2017, and conflicting nati
13、onal standards shall be withdrawn at the latest by September 2017. 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 held responsible for identifying any or all such patent rights. According to the CE
14、N-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hunga
15、ry, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3903:2017EN 3903:2017 (E) 4 1 Scope This European Standard specifies the characteristics of
16、laminated washers, in corrosion resisting steel, for maximum operating temperature 120 C, for aerospace applications. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only
17、 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 9100, Aerospace series Quality Management Systems Requirements for Aviation, Space and Defence Organization
18、s 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are in millimetres. 3.2 Material Austenitic corrosion resistant steel Rm 440 MPa BS EN 3903:2017EN 3903:2017 (E) 5 Values in micrometres Key 1 Shim thickness: 0.025 (code A) 0.05 (cod
19、e B) Figure 1 Table 1 Diameter code D1D2Mass aH13 Nom. Tol. 030 3,2 6 0 0,3 0,25 040 4,3 8 0 0,4 0,45 050 5,5 10 0,69 060 6,5 11 0,78 070 7,5 14 1,18 080 8,5 15 1,45 100 10,5 18 2,11 120 12,5 21 0 0,5 2,81 140 14,5 24 3,61 160 16,5 27 4,50 180 18,5 30 5,50 200 20,5 33 6,59 220 22,5 36 7,79 240 24,5
20、38 8,32 270 27,5 42 9,94 300 30,5 45 10,8 a Approximate values (kg/1 000 pieces), calculated on the basis of 7,85 kg/dm3, for information purposes only3,2 Ramax 1,6 BS EN 3903:2017EN 3903:2017 (E) 6 4 Designation EXAMPLE Description block WASHER Identity block EN3903A200 Number of this standard Thic
21、kness code (see Figure 1) Diameter code (see Table 1) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style G 6 Quality assurance EN 9100 This page deliberately left blankBSI is the national body responsible for preparing Bri
22、tish Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)About usWe bring together business, industry, governm
23、ent, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across
24、all sectors choose standards to help them achieve their goals.Information on standardsWe can provide you with the knowledge that your organization needs to succeed. Find out more about British Standards by visiting our website at or contacting our Customer Services team or Knowledge Centre.Buying s
25、tandardsYou can buy and download PDF versions of BSI publications, including British and adopted European and international standards, through our website at where hard copies can also be purchased. If you need international and foreign standards from other Standards Development Organizations, hard
26、 copies can be ordered from our Customer Services team.Copyright in BSI publicationsAll the content in BSI publications, including British Standards, is the property of and copyrighted by BSI or some person or entity that owns copyright in the information used (such as the international standardizat
27、ion bodies) and has formally licensed such information to BSI for commercial publication and use.Save for the provisions below, you may not transfer, share or disseminate any portion of the standard to any other person. You may not adapt, distribute, commercially exploit, or publicly display the sta
28、ndard or any portion thereof in any manner whatsoever without BSIs prior written consent.Storing and using standardsStandards purchased in soft copy format: A British Standard purchased in soft copy format is licensed to a sole named user for personal or internal company use only. The standard may b
29、e stored on more than 1 device provided that it is accessible by the sole named user only and that only 1 copy is accessed at any one time. A single paper copy may be printed for personal or internal company use only.Standards purchased in hard copy format: A British Standard purchased in hard copy
30、format is for personal or internal company use only. It may not be further reproduced in any format to create an additional copy. This includes scanning of the document.If you need more than 1 copy of the document, or if you wish to share the document on an internal network, you can save money by ch
31、oosing a subscription product (see Subscriptions).Reproducing extractsFor permission to reproduce content from BSI publications contact the BSI Copyright & Licensing team.SubscriptionsOur range of subscription services are designed to make using standards easier for you. For further information on o
32、ur subscription products go to British Standards Online (BSOL) youll have instant access to over 55,000 British and adopted European and international standards from your desktop. Its available 24/7 and is refreshed daily so youll always be up to date. You can keep in touch with standards developme
33、nts and receive substantial discounts on the purchase price of standards, both in single copy and subscription format, by becoming a BSI Subscribing Member. PLUS is an updating service exclusive to BSI Subscribing Members. You will automatically receive the latest hard copy of your standards when th
34、eyre revised or replaced. To find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet. Licences can cover as few or as many users as you wish. With updates supp
35、lied as soon as theyre available, you can be sure your documentation is current. For further information, email .RevisionsOur British Standards and other publications are updated by amendment or revision. We continually improve the quality of our products and services to benefit your business. If yo
36、u find an inaccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre.Useful ContactsCustomer ServicesTel: +44 345 086 9001Email (orders): Email (enquiries): SubscriptionsTel: +44 345 086 9001Email: Knowledge CentreTel: +44 20 8996 7004Email: Copyright & LicensingTel: +44 20 8996 7070Email: NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Group Headquarters389 Chiswick High Road London W4 4AL UKBSI Back Cover.indd 1 27/01/2016 14:20
