1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN ISO 7090:2000 The E
2、uropean Standard EN ISO 7090:2000 has the status of a British Standard ICS 21.060.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Plain washers, chamfered Normal series Product grade AThis British Standard, having been prepared under the direction of the Engineering Sector
3、Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2000 BSI 09-2000 ISBN 0 580 36117 9 BS EN ISO 7090:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the official English language ve
4、rsion of EN ISO 7090:2000. It is identical with ISO 7090:2000. The UK participation in its preparation was entrusted by Technical Committee FME/9, Bolts, Nuts and Accessories (+QA present to the responsible international/European committee any enquiries on the interpretation, or proposals for change
5、, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Stan
6、dards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under t
7、he section 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 appli
8、cation. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii and iii, a blank page, pages 1 to 5, the
9、annex ZA page, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO7090 June2000 ICS21.060.30 Englishversion Plainwashers,chamferedNormalseriesProductgradeA (ISO7090
10、:2000) Rondellesplates,chanfreinesSrienormaleGradeA (ISO7090:2000) FlacheScheibenmitFaseNormaleReiheProduktklasse A(ISO7090:2000) ThisEuropeanStandardwasapprovedbyCENon1June2000. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standard
11、thestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra n
12、slation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Por
13、tugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG CentralSecretariat:ruedeStassart,36B1050Brussels 2000CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO7090:
14、2000EForeword ThetextoftheInternationalStandardISO7090:2000hasbeenpreparedbyTechnicalCommittee ISO/TC2“Fasteners“incollaborationwithTechnicalCommitteeCEN/TC 185“Threadedand nonthreadedmechanicalfastenersandaccessories“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandar dshallbegiventhestatusofana
15、tionalstandard ,eitherbypublicationofan identicaltextorb yendorsement,atthelatestbyDecember2000 ,andconflictingnationalstandards shallbewithdrawnatthelatestbyDecember2000. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationso f the followingcountrie s areboundt o implementt
16、hisEuropea n Standard:Austria,Belgium , CzechRepublic, Denmark, Finland,France,Germany , Greece,Iceland,Ireland , Italy,Luxembourg,Netherlands,Norway, Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom. Endorsementnotice ThetextoftheInternationalStandardISO7090:2000wasapprovedbyCENasaEuropean Stan
17、dardwithoutanymodification. NOTE:NormativereferencestoInternationalStandardsarelistedinannexZA(normative). EN ISO 7090:2000Referencenumber ISO7090:2000(E) INTERNATIONAL STANDARD ISO 7090 Secondedition 2000-06-01 Plainwashers,chamferedNormal seriesProductgradeA Rondelles plates, chanfreines Srie norm
18、ale Grade A EN ISO 7090:2000ii EN ISO 7090:2000 iii Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubj
19、ectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstanda
20、rdization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. Atte
21、ntionisdrawntothepossibilitythatsomeoftheelementsofthisInternationalStandardmaybethesubjectof patentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardISO7090waspreparedbyTechnicalCommitteeISO/TC2, Fasteners. Thissecondeditioncancelsandreplacesthefirstedi
22、tion(ISO7090:1983),whichhasbeentechnicallyrevised. EN ISO 7090:2000EN ISO 7090:2000 1 Plainwashers,chamferedNormalseriesProductgradeA 1 Scope ThisInternationalStandardspecifiesthecharacteristicsofnormal-series,product-grade-Aplainwashers chamferedattheoutsidediameter,inthe200HVand300HVhardnessclasse
23、sandofnominalsizes(nominal threaddiameters)rangingfrom5mmto64mminclusive. Washersofhardnessclass200HVaresuitablefor boltsandscrewsofproductgradesAandBinpropertyclassesuptoandincluding8.8; nutsofproductgradesAandBinpropertyclassesuptoandincluding8; bolts,screwsandnutsofstainlesssteelofsimilarchemical
24、composition; case-hardenedthreadrollingscrews. Washersofhardnessclass300HVaresuitablefor boltsandscrewsofproductgradesAandBinpropertyclassesuptoandincluding10.9; nutsofproductgradesAandBinpropertyclassesuptoandincluding10. IfdimensionsotherthanthoselistedinthisInternationalStandardarerequired,theysh
25、ouldbeselectedfromthose giveninISO887. Whensoftmaterialpiecesareclamped,orlargeclearanceholesintheworkpieceareused,theusershouldcheck thetechnicalsuitabilityofthistypeofwasher. EN ISO 7090:20002 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext,con
26、stituteprovisionsof thisInternationalStandard.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthese publicationsdonotapply.However,partiestoagreementsbasedonthisInternationalStandardareencouragedto investigatethepossibilityofapplyingthemostrecenteditionsofthenormativedocumentsindicatedb
27、elow.For undatedreferences,thelatesteditionofthenormativedocumentreferredtoapplies.MembersofISOandIEC maintainregistersofcurrentlyvalidInternationalStandards. ISO887:2000, Plain washers for metric bolts, screws and nuts for general purposes General plan. ISO3269:2000, Fasteners Acceptance inspection
28、. ISO3506-1:1997, Mechanical properties of corrosion-resistant stainless-steel fasteners Part 1: Bolts, screws and studs. ISO4042:1999, Fasteners Electroplated coatings. ISO4759-3:2000, Tolerances for fasteners Part 3: Plain washers for bolts, screws and nuts Product grades A and C. ISO6507-1:1997,
29、Metallic materials Vickers hardness test Part 1: Test method. ISO10683 1) , Fasteners Non-electrolytically applied zinc flake coatings. 3 Dimensions SeeFigure1andTables1and2. Dimensionsinmillimetres, surfaceroughnessvaluesinmicrometres Figure1Dimensions 1)Tobepublished. EN ISO 7090:2000 3 Table1Pref
30、erreddimensions Dimensionsinmillimetres Nominalsize Clearancehole Outsidediameter Thickness d 1 d 2 h nom. max. nom. min. nom. max. min. (Nominal thread diameter,d) (min.) (max.) 5 5,30 5,48 10,00 9,64 1 1,1 0,9 6 6,40 6,62 12,00 11,57 1,6 1,8 1,4 8 8,40 8,62 16,00 15,57 1,6 1,8 1,4 10 10,50 10,77 2
31、0,00 19,48 2 2,2 1,8 12 13,00 13,27 24,00 23,48 2,5 2,7 2,3 16 17,00 17,27 30,00 29,48 3 3,3 2,7 20 21,00 21,33 37,00 36,38 3 3,3 2,7 24 25,00 25,33 44,00 43,38 4 4,3 3,7 30 31,00 31,39 56,00 55,26 4 4,3 3,7 36 37,00 37,62 66,0 64,8 5 5,6 4,4 42 45,00 45,62 78,0 76,8 8 9 7 48 52,00 52,74 92,0 90,6 8
32、 9 7 56 62,00 62,74 105,0 103,6 10 11 9 64 70,00 70,74 115,0 113,6 10 11 9 Table2Non-preferreddimensions Dimensionsinmillimetres Nominalsize Clearancehole Outsidediameter Thickness d 1 d 2 h nom. max. nom. min. nom. max. min. (Nominal thread diameter,d) (min.) (max.) 14 15,00 15,27 28,00 27,48 2,5 2
33、,7 2,3 18 19,00 19,33 34,00 33,38 3 3,3 2,7 22 23,00 23,33 39,00 38,38 3 3,3 2,7 27 28,00 28,33 50,00 49,38 4 4,3 3,7 33 34,00 34,62 60,0 58,8 5 5,6 4,4 39 42,00 42,62 72,0 70,8 6 6,6 5,4 45 48,00 48,62 85,0 83,6 8 9 7 52 56,00 56,74 98,0 96,6 8 9 7 60 66,00 66,74 110,0 108,6 10 11 9 EN ISO 7090:200
34、04 4 RequirementsandInternationalStandardsofreference SeeTable3. Table3SpecificationsandInternationalStandardsofreference Material a Steel Stainlesssteel A2 F1 C1 Grade b A4 C4 International Standard ISO3506-1 Hardness class 200HV 300HV c 200HV Mechanical properties Hardness range d 200HV to 300HV 3
35、00HV to 370HV 200HV to 300HV Productgrade A Tolerances International Standard ISO4759-3 Surfacefinish Plain:i.e.washerstobesuppliedinnaturalfinish,treatedwitha protectivelubricantorwithothercoatingsasagreedby customerandsupplier. RequirementsforelectroplatingcoveredinISO4042. Requirementsfornon-elec
36、trolyticallyappliedzincflakecoatings coveredinISO10683. Forhardenedandtemperedwashers,appropriateplatingor coatingprocessesshouldbeemployedtoavoidhydrogen embrittlement.Whenwashersareelectroplatedorphosphated, theyshallbesuitablytreatedimmediatelyafterplatingorcoating toobviatedetrimentalhydrogenemb
37、rittlement. Alltolerancesshallapplypriortotheapplicationofaplatingor coating. Plain:i.e.washers shallbesuppliedin naturalfinish. Workmanship Partsshallbefreeofirregularitiesordetrimentaldefects.No protrudingburrsshallappearonthewasher. Acceptability AcceptanceprocedurecoveredinISO3269. a Othermetall
38、icmaterialsasagreedbetweencustomerandsupplier. b Relatedtochemicalcompositiononly. c Hardenedandtempered. d HardnesstestingaccordingtoISO6507-1. Testforce:HV10 fornominalthicknesshu1,2mm HV30 fornominalthicknessh1,2mm EN ISO 7090:2000 5 5 Designation EXAMPLE1 Anormal-series,product-grade-A,chamfered
39、plainwashermadeofsteel,ofnominalsize8mmandhardness class200HVisdesignatedasfollows: WasherISO7090-8-200HV EXAMPLE2 Anormalseries,product-grade-A,chamferedplainwashermadeofgradeA2stainlesssteel,ofnominalsize 8mmandhardnessclass200HVisdesignatedasfollows: WasherISO7090-8-200HV-A2 EN ISO 7090:2000Annex
40、ZA (normative) Normativereferencestointernationalpublications withtheirrelevantEuropeanpublications ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriateplacesinthetextandthe publicationsarelistedhereafter.Fordated
41、references,subsequentamendmentstoorrevisionsof anyofthesepublicationsapplytothisEuropeanStandardonlywhenincorporatedinitby amendmentorrevision.Forundatedreferencesthelatesteditionofthepublicationreferredto applies. Publication Year Title EN Year ISO350611997Mechanicalpropertiesofcorrosionresistantst
42、ainlessstee lENISO3506 11997 fastenersPart1:Bolts,screwsandstuds ISO4042 1999FastenersElectroplatedcoatings ENISO4042 1999 ISO475932000TolerancesforfastenersPart3:Plainwashersforbolts , ENISO4759 32000 screwsandnutsProductsgradesAandC ISO650711997MetallicmaterialsVickershardnesstestPart1: ENISO6507
43、11997 Testmethod EN ISO 7090:2000BS EN ISO 7090:2000 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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