1、BRITISH STANDARD AEROSPACE SERIES BS EN 3230:2001 Aerospace series Nuts, hexagon, slotted/castellated, reduced height, normal across flats, in steel, cadmium plated, Classification: 900 MPa (at ambient temperature)/235 C The European Standard EN 3230:2001 has the status of a British Standard ICS 49.
2、030.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 3230:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2001 BS
3、I 07-2001 ISBN 0 580 37380 0 National foreword This British Standard is the official English language version of EN 3230:2001. The UK participation in its preparation was entrusted to Technical Committee ACE/12/1, Aerospace Fasteners, Fastening Systems, Details and Parts (International), which has t
4、he responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the se
5、ction entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applicatio
6、n. 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, or proposals for change, and keep the UK interests informed; monitor
7、 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 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the
8、document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3230 June2001 ICS49.030.30 Englishversion AerospaceseriesNuts,hexagon,slotted/castellated,reduced height,normalacrossflats,insteel,cadmiumplated, Classification:900MPa
9、(atambienttemperature)/235C SriearospatialeEcroushexagonauxcrneaux, hauteurrduite,surplatsnormaux,enacier,cadmis Classification:900MPa(tempratureambiante)/235C LuftundRaumfahrtFlacheKronenmutternmitnormaler Schlsselweite,ausSthal,verkadmetKlasse:900MPa (beiRaumtemperatur)/235C ThisEuropeanStandardwa
10、sapprovedbyCENon28February2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicati
11、ontotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethe
12、nationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementC
13、entre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3230:2001EPage2 EN3230:2001 Foreword ThisEuropeanStandardhasbeenpreparedbytheEuropeanAssociationofAerospaceManufacturers (AECMA). Afterinquiriesandvotescarriedou
14、tinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,att
15、helatestbyDecember2001,andconflictingnationalstandardsshallbe withdrawnatthelatestbyDecember2001. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,German
16、y,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal, Spain,Sweden,SwitzerlandandtheUnitedKingdom.Page3 EN3230:2001 1 Scope Thisstandardspecifiesthecharacteristicsofhexagonalslotted/castellatednuts,reducedheight,normal acrossflats,insteel,cadmiumplated. Classification:900MPa 1) /235
17、C 2) 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyt
18、o thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. ISO58552 AerospaceMJthreadsPart2:Limitdimensionsforboltsandnuts ISO8788 AerospaceNuts,metricTolerancesofformandposition ISO9139 AerospacePlainorslotted(castella
19、ted)nutsProcurementspecification ISO9618 AerospaceNuts,hexagonal,slotted(castellated),reducedheight,normalacrossflats,with MJthreads,classifications:450MPa(atambienttemperature)/120C,450MPa(atambient temperature) / 235C, 600MPa (at ambient temperature) / 425C, 900MPa (at ambient temperature) / 235C,
20、 900MPa (at ambient temperature) / 315C, 900MPa (at ambient temperature) / 650C, 1100MPa (at ambient temperature) / 235C, 1100MPa (at ambient temperature)/730Cand1250MPa(atambienttemperature)/600CDimensions EN2000 Aerospace series QualityassuranceENaerospaceproductsApprovalof thequality systemofmanu
21、facturers EN2133 AerospaceseriesCadmiumplatingofsteelswithspecifiedstensilestrength 1450MPa, cooper,cooperalloysandnickelalloys EN2367 AerospaceseriesSplitpinsinsteelEN2573 EN2424 AerospaceseriesMarkingofaerospaceproducts TR3823 AerospaceseriesMaterialsforplainandslottedhexagonalnuts 3) 1) Correspon
22、dstotheminimumtensilestresswhichthenutisabletowithstandatambienttemperaturewithout breakingorcrackingwhentestedwithaboltofahigherstrengthclass. 2) Maximumtemperaturethatthenutisabletowithstand,withoutpermanentalterationtoitsoriginalcharacteristics, afterambienttemperaturehasbeenrestored.Themaximumte
23、mperatureisconditionedbythecadmiumplating. 3) PublishedasAECMATechnicalReportatthedateofpublicationofthisstandardPage4 EN3230:2001 3 Requiredcharacteristics 3.1 ConfigurationDimensionsMasses Seefigure1andtable1. Dimensionsandtolerancesare:inconformitywithISO9618,expressedinmillimetresandapplyaftersu
24、rface treatment. Detailsofformnotstatedareatthemanufacturersoption. 3.2 Tolerancesofformandposition ISO8788 3.3 Materials TR3823 3.4 Surfacetreatment EN2133,5 mmin.,onthreadsandonallsurfaceswhichcanbecontactedbya20mmdiameterball.Onall othersurfaces,acontinuousdepositshallbepresent.Page5 EN3230:2001
25、Removesharpedges0,1to0,4. Formfordiameter Formfordiameter codes060to240 codes040and050 Key 1S i x s l o t s 2 Formofcontourwithinlimitingdimensionsatmanufacturersoption 3 Form(radiusorchamfer)atbottomofslotatmanufacturersoption 4 Marking a Thesevaluesinmicrometresapplybeforesurfacetreatment.Theydono
26、tapplytothreadsthesurfacetextureofwhichwill beasachievedbyusualmanufacturingmethods. b Diameter D 1maybetangentialto,butnotintrudeontheflats. c Thisdimensionalsoappliestoupperchamfer.Allformsofentry(chamferorradius)optionalwithintheselimitingdimensions. d Thread e Dimension Gappliestoheightbelowslot
27、sandheightofflats(diametercodes060to240). Figure1 Table1 N D 1 D 2 D 3 EFGHS Diameter code Thread a min. nom. Tol. 0,25 min. nom. Tol. h14 0,25 0 0,3 H14 Mass b Splitpin diameter c 040 MJ4 0,74H6H 6,4 4,2 7,6 7 2,1 4,1 1,3 1,1 1 050 MJ5 0,84H6H 7,4 5,2 0,6 0 8 , 7 8 h12 2,4 4,8 1,5 060 MJ6 14H5H 9,3
28、 6,3 9 10,9 10 5,4 1,7 2,2 1,4 070 MJ7 14H5H 10,2 7,3 10 12 11 3 5,8 2,7 080 MJ8 14H5H 12,2 8,3 11 14,3 13 3,2 6 0,5 2,1 4 1,8 100 MJ10 1,254H5H 16 10,3 13 18,9 17 4 7,6 8,6 120 MJ12 1,254H5H 18 12,3 16 21,1 19 4,8 8,4 2,6 12,8 2,3 140 MJ14 1,54H5H 21 14,4 18 24,5 22 5,6 10 19,6 160 MJ16 1,54H5H 23
29、16,4 22 26,8 24 6,4 10,8 3,2 26,9 2,9 180 MJ18 1,54H5H 26 18,4 25 30,2 27 7,2 12,4 37,7 200 MJ20 1,54H5H 29 20,4 28 33,6 30 8 13,2 52,2 220 MJ22 1,54H5H 30,9 22,4 30 35,8 32 8,8 14 68,3 240 MJ24 24H5H 34,9 24,5 0,8 0 32 40,4 36 h13 9,6 14,8 0,6 4 86,8 3,7 a InconformitywithISO58552 b Approximatevalu
30、es(kg/1000pieces),givenforinformationpurposesonly c InconformitywithEN2367 a 1,6 6,3Page6 EN3230:2001 4 Designation EXAMPLE: Descriptionblock NUT Identityblock EN3230080 Numberofthisstandard Diametercode(seetable1) NOTE Ifnecessary,thecodeI9005shallbeplacedbetweenthedescriptionblockandtheidentityblo
31、ck. 5 Marking Seetable2andfigure1. Table2 Diametercode EN2424 Style 040to070 N 080to240 C MJ 6 Technicalspecification ISO9139,exceptforapprovalofmanufacturers:seeEN2000.BS EN 3230:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body res
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