1、BRITISH STANDARD AEROSPACE SERIES BS EN 4420:2003 Clips, spring tension, in alloy steel FE-PA3903 The European Standard EN 4420:2003 has the status of a British Standard ICS 49.030.50 BS EN 4420:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committ
2、ee on 4 March 2003 BSI 4 March 2003 ISBN 0 580 41336 5 National foreword This British Standard is the official English language version of EN 4420:2003. The UK participation in its preparation was entrusted by Technical Committee ACE/12, Aerospace fasteners and fastening systems, to Subcommittee ACE
3、/12/1, Aerospace fasteners and fastening systems (international), which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications refer
4、red to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provis
5、ions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation,
6、or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright date
7、displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN4420 February2003 ICS49.030.50 Englishversion AerospaceseriesClips,springtension,inalloysteelFE PA3903 ThisEuropeanStanda
8、rdwasapprovedbyCENon14September2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonappl
9、icationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersa
10、rethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,SlovakRepublic,Spain,Sweden,Switzerland and UnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUR
11、OPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN4420:2003EEN4420:2003(E) 2 Contents Foreword3 1 Scope 3 2 Normativereferences 3 3 Requiredcharacteristics .4 3.1 Configuratio
12、nDimensionsTolerancesMasses .4 3.2 Material4 4 Designation.7 5 Marking .7 6 Technicalspecification . 7 7 Application7EN4420:2003(E) 3 Foreword ThisdocumentEN4420:2003hasbeenpreparedbytheEuropeanAssociationofAerospaceManufacturers (AECMA). Afterenquiriesandvotescarriedoutinaccordancewiththerulesofthi
13、sAssociation,thisStandardhasreceived theapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesofAECMA,priortoits presentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyAugust2003,andconfli
14、ctingnationalstandardsshallbewithdrawnatthelatestby August2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,I
15、taly,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandUnitedKingdom. 1Scope Thisstandardspecifiesthecharacteristicsofspringtensionclipsforthesupportofelectricalharnesses,inFE PA3903foraerospaceapplications. Maximumoperatingtemperature:250C 2 Normativereferences ThisE
16、uropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywheni
17、ncorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN2424 AerospaceseriesMarkingofaerospaceproducts. EN4528 AerospaceseriesSteelFEPA3903(X12CrNi1810)ColdrolledStripforspringsa 3mm1 250MPa R m 1640MPa 1) . EN4585 Aerospace
18、seriesClips,springtension,inalloysteelFEPA3903Technicalspecification. TR4586 AerospaceseriesClips,springtensionDesignrecommendations 1) . TR4587 AerospaceseriesClips,springtensionAssemblyprocedure 1) . 1) InpreparationatthedateofpublicationofthisstandardEN4420:2003(E) 4 3 Requiredcharacteristics 3.1
19、 ConfigurationDimensionsTolerancesMasses SeeFigures1and2andTables1and2.Dimensionsandtolerancesareinmillimetres. Detailsofformnotstatedarelefttothemanufacturersdiscretion. 3.2Material EN4528EN4420:2003(E) 5 Key 1 Cutareas 8 HalfsectionWW 2 Removesharpedges(barreldeburring) 9 2holes 3 3Dview 10 R1,5to
20、2 4 Marking(onbothinsertionwingtapes) 11 12to25 5 SectionZZ 12 R0,8to1,5beforebending 6 Mandrel 13 1,1to2,2 7 Clipdefinedonaflatsurface 14 4to4,3 NOTEStresscondition:WhensurfacereferencedAisflatandwhena Amandrelismaintainedbytheclip Figure1Springtensionclip:styleA Table1Springtensionsclip:styleA Dia
21、meter code Tightening range A h6 B a max. C a max. D 0,05 EFGJt min. Mass kg/1000 parts 040 4to5 4 10,5 3,5 1,55 050 5to6 5 11 4,5 2,05 1,45 060 6to7 6 11,5 5 0,5 10,7 2,55 8,65 2 0,45 1,7 a Instresscondition:whensurfacereferencedAisflatandwhenadiameterAmandrelismaintainedbytheclip.EN4420:2003(E) 6
22、Key 1 Cutareas 7 Clipinstresscondition 2 Removesharpedges(barreldeburring) 8 HalfsectionWW 3 SectionZZ 9 R2,5to3 4 Marking(onbothinsertionwingtapes) 10 12to25 5 Mandrel 11 2holes N 63 D v i e w NOTEStresscondition:WhensurfacereferencedAisflatandwhena Amandrelismaintainedbytheclip Figure2Springtensio
23、nclip:styleB Table2Springtensionclip:styleB AB a C a DEFGHJM a N a t Mass kg/ 1000 parts Diameter code Tightening range h6 max. max. 0,05 Theo max. min. min. 070 7to8 7 6,15 12,8 3 8,75 2,9 6,3 3,1 080 8to9 8 6,3 14,5 3,5 9 3,3 6,9 3,4 090 9to10 9 14 6,7 15,5 4 3,7 7,5 3,65 100 10to12 10 15 7,5 16 4
24、,5 10,5 3,9 7,75 3,75 120 12to14 12 16 8,7 19 5,5 12,5 4 9,5 4,5 140 14to16 14 16,5 9 0,5 20 6 14 0 4,9 9,9 0,45 5 160 16to18 16 19,5 11,5 22 6,5 16,5 1,5 11 6,5 180 18to21 18 20,5 12 0,6 24,6 7,5 19 1,4 5,7 13,2 2,6 2,5 0,55 7,7 210 21to24 21 23,5 14,5 31 9,5 22,6 0 6,8 17 12,2 240 24to27 24 26 16,
25、8 0,8 33 11 25,4 0 7,4 18 3,5 3,3 0,75 13,1 a Instresscondition:whensurfacereferencedAisflatandwhenadiameterAmandrelismaintainedbytheclip.EN4420:2003(E) 7 4Designation EXAMPLE: Descriptionblock Identityblock CLIP,SPRING EN4420080 Numberofthisstandard Diametercode(seeTables1and2) NOTEIfnecessary,thec
26、odeI9005shallbeplacedbetweenthedescriptionblockandtheidentityblock. 5Marking AccordingtoTable3andFigures1and2. Table3 Springtensionclip Style EN2424 Style AC BA 6 Technicalspecification Qualificationandacceptance:EN4585 7Application Designrecommendations:TR4586 Assemblyprocedure:TR4587BS EN 4420:200
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