1、BRITISH STANDARDBS EN 3710:2008Aerospace series Sockets, bi-hexagonal Technical SpecificationICS 49.030.99g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47
2、g36g58BS EN 3710:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2008 BSI 2008ISBN 978 0 580 62884 9National forewordThis British Standard is the UK implementation of EN 3710:2008. The UK participation in its preparation was entrus
3、ted 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 for its correc
4、t application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 3710April 2008ICS 25.140.30English VersionAerospace series - Sockets, bi-hexagonal - TechnicalSp
5、ecificationSrie arospatiale - Douille bihexagonale - SpcificationtechniqueLuft- und Raumfahrt - Steckschlsseleinstze,Doppelsechskant - Technische LieferbedingungenThis European Standard was approved by CEN on 21 December 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations
6、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 Centre or to any CEN member.This European S
7、tandard 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 versions.CEN members are the national st
8、andards 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, Spain, Sweden, Switzerland and United Ki
9、ngdom.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 Members.Ref. No. EN 3710:2008: E2 Content
10、s Page Foreword3 1 Scope 4 2 Normative references 4 3 Required characteristics.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 .6 6 Technical specification .6 Figures Figure 1 . 5 Tables Table 1. 5 BS EN 3710:20083 Forew
11、ord This document (EN 3710:2008) 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 National Associations
12、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 October 2008, and conflicting national standards shall b
13、e 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 CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regul
14、ations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Nethe
15、rlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 3710:20084 1 Scope This standard specifies the properties of double-hex sockets for aerospace use. 2 Normative references The following referenced documents are indispensable for t
16、he 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. ISO 691, Assembly tools for screws and nuts Wrench and socket openings Tolerances for general use ISO 1174-
17、1, Assembly tools for screw and nuts Driving squares Part 1: Driving squares for hand socket tools ISO 1174-2, Assembly tools for screws and nuts Driving squares Part 2: Driving squares for power socket tools EN 2424, Aerospace series Marking of aerospace products1)EN 3709, Aerospace series Wrenches
18、 and sockets, bi-hexagonal Technical specification 3 Required characteristics 3.1 Configuration, dimensions, tolerances See Figure 1 and Table 1; tolerances for opening socket according to ISO 691; specification driving square according to ISO 1174-1 and ISO 1174-2. 3.2 Material The material quality
19、 is left at the manufacturers option. 3.3 Hardness The hardness test shall be performed in compliance with the requirements given in EN 3709. The hardness required for square drive sockets is as follows: 42 HRC 54. 3.4 Surface treatment Nickel chromium deposit Nickel thickness 5 m min. Chromium thic
20、kness 0,25 m min. 1)Published as AECMA prestandard at the date of publication of this standard. BS EN 3710:20085 aKnurling in this zone bMarking in this zone Figure 1 Table 1 Length code Square drive Width accross flat standard A length B dim. code B C D E D E F G mm mm mm mm mm mm mm mm mm max. max
21、. max. max. min. max. min. min. 5 8 11,2 25 13 45 13 4 4,5 6 9,5 11,2 25 13 45 13 5 5,4 7 11 12 25 13 45 13 6 5,6 8 12,2 12 25 13 45 13 7 6,2 6,35 (1/4 inch) 0,63 9 13,5 14 25 13 45 13 8 6,8 7 11 17,5 32 16,5 45 16,5 6 5,6 8 12,2 17,5 32 16,5 45 16,5 7 6,2 9 13,5 17,5 32 16,5 45 16,5 8 6,8 10 14,7 1
22、7,5 32 16,5 45 16,5 8,5 7,5 11 16 17,5 32 16,5 45 16,5 9,5 8 12 17,2 17,5 32 16,5 45 16,5 11 9 10 (3/8 inch) 100 13 18,5 22,5 32 16,5 45 16,5 12 9,5 10 14,7 24 40 21 75 21 8,5 7,5 11 16 24 40 21 75 21 9,5 8 12 17,2 24 40 21 75 21 11 9 13 18,5 24 40 21 75 21 12 9,5 14 20,5 24 40 21 75 21 13 9,8 15 21
23、,7 24 40 21 75 21 14 12 16 23 25 40 21 75 21 15 12 17 24,2 25 40 21 75 21 15,2 12,5 18 25,5 27 42 21 75 21 17 13,5 12,5 (1/2 inch) 125 19 26,7 27 42 21 75 21 17,5 14 BS EN 3710:20086 4 Designation EXAMPLE Description block Identity block Double hex socket EN 3710 B 125 14 Number of EN standard Lengt
24、h code (see Table 1) Square drive code (see Table 1) Width accross flat (see Table 1) If necessary the originator code I9005 shall be placed between the description block and the identity block. 5 Marking EN 2424, Style C, as indicated in Figure 1, additionally with the width across flat. 6 Technica
25、l specification According to EN 3709. BS EN 3710:2008blankBS EN 3710:2008BSI389 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 international lev
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