1、BRITISH STANDARDBS EN 3660-024:2008Aerospace series Cable outlet accessories for circular and rectangular electrical and optical connectors Part 024: Grommet nut, style A, composite Product standardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50
2、g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3660-024:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2008 BSI 2008ISBN 978 0 580 60583 3National forewordThis Bri
3、tish Standard is the UK implementation of EN 3660-024:2008. The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology.A list of organizations represented on this committee can be obtained on request to its secretary.Th
4、is publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME
5、EUROPENNEEUROPISCHE NORMEN 3660-024April 2008ICS 49.060English VersionAerospace series - Cable outlet accessories for circular andrectangular electrical and optical connectors - Part 024:Grommet nut, style A, composite - Product standardSrie arospatiale - Accessoires arrire pour connecteurscirculair
6、es et rectangulaires lectriques et optiques - Partie024 : Ecrou serre-fils, type A composite - Norme de produitLuft- und Raumfahrt - Endgehuse fr elektrische undoptische Rund- und Rechtecksteckverbinder - Teil 024:Mutter, Bauform A, Composite - ProduktnormThis European Standard was approved by CEN o
7、n 12 January 2008.CEN members are bound to comply with 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
8、be obtained on application to the CEN Management Centre 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 M
9、anagement Centre has the same status as theofficial 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, No
10、rway, Poland, Portugal,Romania, Slovakia, Slovenia, 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 a
11、nd by any means reservedworldwide for CEN national Members.Ref. No. EN 3660-024:2008: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Characteristics.4 5 Designation 8 6 Marking .8 7 Technical specification .8 BS EN 3660-024:20083 Foreword This document (EN
12、 3660-024:2008) 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 and the Official
13、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 be withdrawn at th
14、e 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 Regulations, the natio
15、nal 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, Netherlands, Norway, P
16、oland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 3660-024:20084 1 Scope This product standard defines a range of grommet nuts, style A, composite, for use under the following conditions: Associated electrical connector(s) : EN 3660-002 Temperatur
17、e range, Class P : 55 C to 200 C 2 Normative references The following referenced documents are indispensable for the 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) ap
18、plies. EN 2591-*, Aerospace series Elements of electrical and optical connection Test methods. EN 3660-001, Aerospace series Cable outlet accessories for circular and rectangular electrical and optical connectors Part 001: Technical specification. EN 3660-002, Aerospace series Cable outlet accessori
19、es for circular and rectangular electrical and optical connectors Part 002: Index of product standards. 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 3660-001 apply. 4 Characteristics 4.1 Dimensions and mass For dimensions and mass, see Figure 1 and
20、 Table 1. *All its parts quoted. BS EN 3660-024:20085 All dimensions in millimetres Key 1 Thread A 2 Knurled, manufacturers option 3 Marking (see Clause 6) Figure 1 Table 1 B C Mass Shell size A Thread Class 2B max. + 0,25 0 max. inches mm mm g08 0.500-20UNEF 15,55 10,04 1,7 10 0.625-24UNEF 18,52 12
21、,70 1,9 12 0.750-24UNEF 21,67 16,16 2,2 14 0.875-20UNEF 24,87 18,04 2,6 16 1.000-20UNEF 28,13 21,21 3,0 18 1.0625-18UNEF 30,30 23,22 3,2 20 1.1875-18UNEF 33,48 26,39 3,4 22 1.3125-18UNEF 36,65 29,57 3,8 24 1.4375-18UNEF 39,83 32,49 4,1 BS EN 3660-024:20086 4.2 Material and finish Material Class P :
22、Composite, natural colour, unplated 4.3 Assembly torque These torque values are intended for installation use only, see Table 2. Table 2 Shell size Torque Nm max. 08 2,2 10 2,8 12 14 3,4 16 3,9 18 20 5,0 22 24 9,0 4.4 Coupling thread strength torques These torque values are for test purposes, see EN
23、 2591-420 and Table 3. Table 3 Shell size Torque Nm max. 08 3,0 10 3,5 12 14 4,5 16 5,0 18 20 6,5 22 24 11,5 BS EN 3660-024:20087 4.5 Tests Test details to be in accordance with Table 4 and EN 3660-001. Qualification to be in accordance with EN 3660-001. Table 4 EN 2591 Test No. Title Not applicable
24、 Applicable see EN 3660-001 Particulars 101 Visual examination X 102 Examination of dimensions and mass X See 4.1. 205 Housing (shell) electrical continuity X 212 Surface transfer impedance (from 100 MHz to 1 GHz) aX 301 Endurance at temperature X Method B. Temperature: 200 C Duration: 1 000 h 305 R
25、apid change of temperature X 306 Mould growth X See EN 3660-001. 307 Salt mist X 308 Sand and dust X 314 Immersion at low air pressure X 315 Fluid resistance X 316 Ozone resistance X 317 Flammability X Method A on standard test specimen not on product 318 Fire-resistance X 402 Shock X 403 Sinusoidal
26、 and random vibration X 406 Mechanical endurance X 30 cycles 408 Mating and unmating forces X 420 Mechanical strength of rear accessories X Phase D and Table 3 422 Locking wire hole strength X 513 Magnetic permeability X 515 Hydrolytic stability X a1 GHz to 10 GHz under consideration. BS EN 3660-024
27、:20088 5 Designation EXAMPLE EN3660-024P08 Grommet nut, style A, composite, variant P, natural colour, unplated, shell size 08. Description block GROMMET NUT Identity block EN3660-024P08 Number of this standard Material/Finish class, see 4.2 Shell size NOTE 1 No gaps are required between sections in
28、 the part number when printed. NOTE 2 If necessary, the code I9005 shall be placed between the description block and the identity block. 6 Marking Refer to EN 3660-001 and Figure 1. 7 Technical specification Refer to EN 3660-001. BS EN 3660-024:2008blankBS EN 3660-024:2008BSI389 Chiswick High RoadLo
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