1、BRITISH STANDARDBS EN 3711:2008Aerospace series Wrench-double ended, bi-hexagonal Straight, cranked, offsetICS 49.030.99g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44
2、g42g43g55g3g47g36g58BS EN 3711:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2008 BSI 2008ISBN 978 0 580 62885 6National forewordThis British Standard is the UK implementation of EN 3711:2008. The UK participation in its preparat
3、ion was entrusted to Technical Committee 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 responsible
4、for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 3711April 2008ICS 25.140.30English VersionAerospace series - Wrench-double ended,
5、bi-hexagonal -Straight, cranked, offsetSrie arospatiale - Cl bihexagonale, double, droite,incline, contre coudeLuft- und Raumfahrt - Doppelringschlssel,Doppelsechskant - Gerade, abgewinkelt, flach gekrpftThis European Standard was approved by CEN on 21 December 2007.CEN members are bound to comply w
6、ith the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Ce
7、ntre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial
8、 versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia,
9、 Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national
10、Members.Ref. No. EN 3711:2008: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Requirements.4 3.1 Configuration, dimensions, tolerances .4 3.2 Material .4 3.3 Hardness.4 3.4 Surface treatment 4 4 Designation 6 5 Marking .7 6 Technical specification .7 Figures Figure 1 Box wrench flat
11、 5 Figure 2 Box wrench 15 offset 5 Figure 3 Box wrench modified offset 6 Tables Table 1 Dimensions. 6 BS EN 3711:20083 Foreword This document (EN 3711:2008) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried
12、 out in accordance 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 p
13、ublication of an identical text or by endorsement, at the latest by October 2008, and conflicting national standards shall be withdrawn at the latest by October 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENE
14、LEC 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 European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denma
15、rk, 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 3711:20084 1 Scope This standard specifies the propertie
16、s of the following types of double end box wrenches: double head flat, double head offset and double end modified offset. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undate
17、d references, the latest edition of the referenced document (including any amendments) applies. ISO 691, Assembly tools for screws and nuts Wrench and socket openings Tolerances for general use EN 2424, Aerospace series Marking of aerospace products1)EN 3709, Aerospace series Wrenches and sockets, b
18、i-hexagonal Technical specification 3 Requirements 3.1 Configuration, dimensions, tolerances See Figures 1, 2 and 3 and Table 1; tolerances for wrench openings according to ISO 691. 3.2 Material The material quality is left at the manufacturers option. 3.3 Hardness The hardness test shall be perform
19、ed in compliance with the requirements given in EN 3709. The hardness required for double head flat wrenches is as follows: 42 HRC 54. 3.4 Surface treatment Nickel chromium deposit Nickel thickness 5 m min. Chromium thickness 0,25 m min. 1)Published as AECMA prestandard at the date of publication of
20、 this standard. BS EN 3711:20085 SHAPE CODE A aMarking Figure 1 Box wrench flat SHAPE CODE B Figure 2 Box wrench 15 offset BS EN 3711:20086 SHAPE CODE C Figure 3 Box wrench modified offset Table 1 Dimensions s1 s2 e e b b l H mm mm mm mm mm mm mm mm Code max. max. max. max. min. max. 67 6 7 5 5,5 10
21、 11 150 170 44 89 8 9 6 7 12,4 13,8 160 180 48 1 011 10 11 8 8,5 15,5 16,7 180 200 52 1 012 10 12 8 9 15,5 18,3 185 205 56 1 417 14 17 9,5 11 20,7 25 215 255 68 1 922 19 22 12 13 27,6 31,5 280 320 85 4 Designation EXAMPLE Description block Identity block Double hex wrench EN 3711 B 89 Number of EN s
22、tandard Shape code (see Figures 1, 2 and 3) Code of dimension across flat If necessary the originator code I9005 shall be placed between the description block and the identity block. BS EN 3711:20087 5 Marking EN 2424, Style C, as indicated in Figure 1, additionally with the width across flat near t
23、he heads. 6 Technical specification According to EN 3709. BS EN 3711:2008BS EN 3711:2008BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the in
24、ternational level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and services. W
25、e would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an
26、 individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.Buying standardsOrders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996
27、7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-.In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.Information on standard
28、sBSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Cen
29、tre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-.Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +4
30、4 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-.Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- information about BSI is available on the BSI website at http:/www.bsi-.CopyrightCopyright subsists in all BSI publi
31、cations. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, p
32、hotocopying, recording or otherwise without prior written permission from BSI.This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyrightbsi-.
