1、BRITISH STANDARDBS EN 4355:2008Aerospace series Six lobe recess Drivers, socketICS 49.030.99g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 43
2、55:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2008 BSI 2008ISBN 978 0 580 57072 8National forewordThis British Standard is the UK implementation of EN 4355:2008. The UK participation in its preparation was entrusted to Technic
3、al 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 correct application.
4、Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 4355March 2008ICS 49.030.99English VersionAerospace series - Six lobe recess - Drivers, socketSrie arospatiale
5、 - Empreinte six lobes - Embouts detournevis - Carr dentranementLuft- und Raumfahrt - Sechs-Bogenzahn, Innenantrieb -Schraubendrehereinstze, mit Innenvierkant fr SchraubenThis European Standard was approved by CEN on 26 August 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regula
6、tions 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 Euro
7、pean 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 versions.CEN members are the natio
8、nal 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, Spain, Sweden, Switzerland and Uni
9、ted 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 Members.Ref. No. EN 4355:2008: E2 C
10、ontents Page Foreword3 1 Scope 4 2 Normative references 4 3 Required characteristics.4 3.1 Configuration - Dimensions - Tolerances - Masses.4 3.2 Materials .4 4 Designation 6 5 Marking .6 6 Technical specification .6 BS EN 4355:20083 Foreword This document (EN 4355:2008) has been prepared by the Aer
11、ospace 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 and the Official Services of the member countries of ASD, pri
12、or 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 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. Attention is d
13、rawn 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 Regulations, the national standards organizations of the follo
14、wing 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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slov
15、enia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 4355:20084 1 Scope This standard specifies the characteristics of drivers, socket, six lobe recess, for aerospace applications. 2 Normative references The following referenced documents are indispensable for the application of this docum
16、ent. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1174-1, Assembly tools for screws and nuts Driving squares Part 1: Driving squares for hand socket tools. ISO 1174-2, Assembly tool
17、s for screws and nuts Driving squares Part 2: Driving squares for power socket tools. EN 2424, Aerospace series Marking of aerospace products. EN 4359, Aerospace series Six lobe recess Drivers Technical specification. 3 Required characteristics 3.1 Configuration - Dimensions - Tolerances - Masses Se
18、e Figures 1 and 2 and Tables 1 and 2. Dimensions and tolerances are in millimetres. Specification for driving square: see ISO 1174-1 and ISO 1174-2. 3.2 Materials The material quality is left at the manufacturers option but shall meet the requirements of EN 4359. BS EN 4355:20085 Key 1 Square drive,
19、 see ISO 1174-1 and ISO 1174-2. 2 Marking. 3 Driver tip dimensions, see Figure 2 and Table 2. Figure 1 Driver configuration Table 1 Driver dimensions Driver recess sizes available Recess code 40 45 50 55 60 BS EN 4355:20086 Figure 2 Driver tip configuration Table 2 Driver tip dimensions E F N R1R2Re
20、cess code max. 0,05 min. rad. rad. 40 4,75 6,60 3,30 1,47 0,51 45 5,54 7,77 3,81 1,83 0,54 50 6,35 8,79 4,57 1,85 0,74 55 7,94 11,18 5,08 2,71 0,88 60 9,45 13,21 7,62 2,94 1,01 4 Designation EXAMPLE Description block DRIVER, SOCKET, SIX LOBE RECESS Identity block EN4355-55 Number of this standard Re
21、cess 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 A, as indicated on Figure 1. 6 Technical specification EN 4359 BS EN 4355:2008blankBS EN 4355:2008BSI389 Chiswick High RoadLondonW4 4ALBSI British
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