1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN ISO 4759-1:2001 The
2、 European Standard EN ISO 4759-1:2000 has the status of a British Standard ICS 21.060.10; 21.060.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and CThis British Standard, having been prepar
3、ed under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 February 2001 BSI 02-2001 ISBN 0 580 36778 9 BS EN ISO 4759-1:2001 Amendments issued since publication Amd. No. Date Comments National foreword This Br
4、itish Standard is the official English language version of EN ISO 4759-1:2000. It is identical with ISO 4759-1:2000. It supersedes BS 6322-1:1982 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee FME/9, Bolts, nuts and accessories (+QA and hose clamps),
5、 to Subcommittee FME/9/3, Reference standards for fasteners (+tolerance standards), which has the responsibility to: 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 interes
6、ts 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 Standards normally include an
7、 annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Cor
8、respondence 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 application. Compliance with a British Standard does
9、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 to iv, pages 1 to 58, an inside back cover and a back cover The BSI copyright notice disp
10、layed in this document indicates when the document was last issued.EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO47591 November2000 ICS02.006.10 Englishversion TolerancesforfastenersPart1:Bolts,screws,studsandnuts ProductgradesA,BandC(ISO47591:2000) TolrancesdeslmentsdefixationPartie1:Vis,gouj
11、ons etcrousGradesA,BetC(ISO47591:2000) ToleranzenfrVerbindungselementeTeil1:Schrauben undMutternProduktklassenA,BundC(ISO4759 1:2000) ThisEuropeanStandardwasapprovedbyCENon7October2000. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an S
12、tandardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadeby
13、tra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,
14、Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2000CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO4759
15、1:2000EForeword ThetextoftheI nternationalSta ndard ISO 47591 :2000 hasb een prepared by Technical CommitteeISO/ TC2“ Fasteners“in collaboration with Technical CommitteeCEN/ TC185“ Threaded and nonth readed mechanical fastenersa ndaccessories“, thesecretariatof which ish eld by DIN. ThisEurop ean St
16、andardshall be given thes tatusof a nationalst andard, either by publication ofani dentical textor by endorsement,att helatest by May 2001,a ndcon flictingna tional standardss hallbe withdrawn atthe latest by May2 001. According totheCE N/CENELECInter nalRe gulations, the national standardsorga niza
17、tions of the followingc ountriesare bound toi mplementt hisEur opean Standard:Aust ria, Belgium, Czech Republic, Denmark,Finla nd,Franc e,Ger many,Greece,I celand, Ireland, Italy, Luxembourg,Ne therlands, Norway, Portugal,Sp ain, Sweden,Swi tzerlanda ndt heU nited Kingdom. NOTEFROMCEN/CS:Theforeword
18、issusceptibletobeamendedonreceptionofthe Germanlanguageversion.Theconfirmedoramendedforeword,andwhenappropriate,the normativeannexZAforthereferencestointernationalpublicationswiththeirrelevant Europeanp ublications willbecircul ated witht heGer manversi on. Endorsementnotice Thetextof theI nternatio
19、nalSta ndard ISO 47591 :2000 wasapp roved by CEN as a European Standard without any modification. ENISO47591:2000Referencenumber ISO4759-1:2000(E) INTERNATIONAL STANDARD ISO 4759-1 Secondedition 2000-11-15 Tolerancesforfasteners Part1: Bolts,screws,studsandnutsProduct gradesA,BandC Tolrancesdeslment
20、sdefixation Partie1:Vis,goujonsetcrousGradesA,BetC ENISO47591:2000ii ENISO47591:2000ISO-95741:(0002)Eiii Contents Page Foreword.iv 1 Scope1 2 Normativereferences2 3 Tolerancesformetricbolts,screwsandstuds3 4 Tolerancesformetricnuts25 5 Tolerancesfortappingscrews.36 AnnexA(informative)Tolerances.44 A
21、nnexB(informative)Examplesofdimensionedandtolerancedfasteners46 AnnexC(informative)Examplesofgaugesandothermeasuringdevices49 ENISO47591:2000ISO-95741:(0002)E iv Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).Theworkofpre
22、paringInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.
23、ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodies
24、forvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthispartofISO4759maybethesubjectofpatent rights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardIS
25、O4759-1waspreparedbyTechnicalCommitteeISO/TC2,Fasteners,Subcommittee SC7,ReferenceStandardsforfasteners(mainlycoveringterminology,dimensioning,sizesandtolerancing). Thissecondeditioncancelsandreplacesthefirstedition(ISO4759-1:1978),whichhasbeentechnicallyrevised. ISO4759consistsofthefollowingparts,u
26、nderthegeneraltitleTolerancesforfasteners: Part1:Bolts,screws,studsandnutsProductgradesA,BandC Part3:Plainwashersforbolts,screwsansnutsProductgradesAandC AnnexesAtoCofthispartofISO4759areforinformationonly. ENISO47591:2000INTERNATIONALSTANDADR ISO-95741:(0002)E1 Tolerancesforfasteners Part1: Bolts,s
27、crews,studsandnutsProductgradesA,BandC 1 Scope ThispartofISO4759specifiesaselectionoftolerancesforbolts,screws,studsandnutswithISOmetricthreads andwithproductgradesA,BandCandfortappingscrewswithproductgradeA. NOTE TheproductgradesrefertothesizeofthetoleranceswheregradeAisthemostpreciseandgradeCisthe
28、least precise. Thetolerances,excepttolerancesforthreads,areselectedfromthesystemoflimitsandfitsspecifiedinISO286-1 andISO286-2.Thetolerancesformetricthreadsaretakenfromtheseriesoftoleranceclassesspecifiedin ISO965-3.ThetolerancesfortappingscrewthreadsarecoveredinISO1478. Thetolerancesofformandpositi
29、onarespecifiedandindicatedinaccordancewithISO1101,ISO8015and ISO2692. ThetolerancesspecifiedinthispartofISO4759applytofastenerspriortocoatingunlessotherwisespecified.See alsoISO4042. DeviationsfromthetolerancesspecifiedinthispartofISO4759areonlypermittedinproductstandardswhere therearevalidtechnical
30、reasons.Incaseswherethereisadifferencebetweenthetolerancerequirementsinthis partofISO4759andtheproductstandard,theproductstandardtakesprecedence. Itisrecommendedthatthesetolerancesalsobeusedfornon-standardfasteners. DimensionsandtolerancesgiveninthispartofISO4759areinmillimetres. ENISO47591:2000ISO-
31、95741:(0002)E 2 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsof thispartofISO4759.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthesepublications donotapply.However,partiestoagreementsbasedonthispartofISO4759
32、areencouragedtoinvestigatethe possibilityofapplyingthemostrecenteditionsofthenormativedocumentsindicatedbelow.Forundated references,thelatesteditionofthenormativedocumentreferredtoapplies.MembersofISOandIECmaintain registersofcurrentlyvalidInternationalStandards. ISO225:1983,FastenersBolts,screws,st
33、udsandnutsSymbolsanddesignationofdimensions. ISO286-1:1988,ISOsystemoflimitsandfitsPart1:Basesoftolerances,deviationsandfits. ISO286-2:1988,ISOsystemoflimitsandfitsPart2:Tablesofstandardtolerancegradesandlimitdeviationsfor holesandshafts. ISO885:2000,GeneralpurposeboltsandscrewsMetricseriesRadiiunde
34、rthehead. ISO965-3:1998,ISOgeneralpurposemetricscrewthreadsTolerancesPart3:Deviationsforconstructional screwthreads. ISO1101:2000,GeometricalProductSpecifications(GPS)GeometricaltolerancingTolerancesofform, orientation,locationandrun-out. ISO1478:1999,Tappingscrewsthread. ISO1479:1983,Hexagonheadtap
35、pingscrews. ISO2692:1988,TechnicaldrawingsGeometricaltolerancingMaximummaterialprinciple. ISO4032:1999,Hexagonnuts,style1ProductgradesAandB. ISO4042:1999,FastenersElectroplatedcoatings. ISO4757:1983,Crossrecessesforscrews. ISO7053:1992,Hexagonwasherheadtappingscrews. ISO7721:1983,Countersunkheadscre
36、wsHeadconfigurationandgauging. ISO8015:1985,TechnicaldrawingsFundamentaltolerancingprinciple. ISO10509:1992,Hexagonflangeheadtappingscrews. ISO10642:1997,Hexagonsocketcountersunkheadscrews. ISO10664:1999,Hexalobularinternaldrivingfeatureforboltsandscrews. ENISO47591:2000ISO4-9571:(0002)E3 3 Toleranc
37、esformetricbolts,screwsandstuds 3.1 Dimensionaltolerances SymbolsanddesignationsofdimensionsarespecifiedinISO225. Toleranceforproductgrades Feature ABC Notes 3.1.1Tolerancelevel Shankandbearingsurface Otherfeatures close close close wide wide wide 3.1.2Externalthread 6g 6g 8g (but6gfor property clas
38、s8.8 andhigher) Forcertain productsand coatings,other toleranceclasses forthreadsmay bespecifiedinthe relevantproduct andcoating standards. s Tolerance s Tolerance u30 30 h13 h14 u18 18u60 60u180 180 h14 h15 h16 h17 3.1.3Drivingfeatures 3.1.3.1 External 3.1.3.1.1 Widthacrossflats Figure1 Figure2 ENI
39、SO47591:2000ISO-95741:(0002)E 4 Toleranceforproductgrades Feature AB C Notes 3.1.3.1.2 Widthacrosscorners Figure3 e min =1,13s min e min =1,12s min forboltsandscrewswithflange andothercoldforgedheadswithouttrimming operation e min =1,3s min Figure4 k Tolerance 3.1.3.1.3 Heightofhead Figure5 js14 js1
40、5 10 W10 js16 js17 ENISO47591:2000ISO4-9571:(0002)E5 Toleranceforproductgrades Feature ABC Notes Figure6 Forhexagonboltsandscrewswithflange,kis definedonlyasamaximum 3.1.3.1.4 Wrenchingheight Figure7 k w a min =0,7k min k w definesthe lengthoverwhich e min appliesbut excludingany chamfer,washer face
41、orradius specifiedinthe appropriate productstandard. Theformulaefor k wmin onlyapply totheproducts illustrated. a Thesymbolk w replacesthe previouslyusedk . wmin min b =0,7 IT15 tan max max wmin 2 de kk x x isthegreaterofc min 1,25orc min +0,4 istheflangeangle Dimensionsk w a ,k,d w ,eand areinaccor
42、dance withISO225. b Forgauging, seeannexAofthe productstandards Figure8 Figure8a) ENISO47591:2000ISO-95741:(0002)E 6 Toleranceforproductgrades Feature ABC Notes 3.1.3.2 Internal 3.1.3.2.1Hexagonsockets e min =1,14s min s Tolerance 0,7 EF8 0,9 JS9 1,3 K9 1,5 2 2,5 3 D11 4E11 Figure9 5 6 8 10 12 14 E1
43、2 14 D12 n Tolerance Tolerancefield u1 +0,20 +0,06 C13fornu1 1u3 +0,31 +0,06 C14forn1 3.1.3.2.2Slots Figure10 3u6 +0,37 +0,07 ENISO47591:2000ISO4-9571:(0002)E7 Toleranceforproductgrades Feature ABC Notes 3.1.3.2.3 Depthofhexagonsockets andslots Figure11 Thedepthofhexagon socketsandslotsis specifiedi
44、nproduct standardsonlyasa minimum.Itis restrictedbythe minimumwall thicknessw. Forthetimebeing generally applicable tolerancescannot bespecified. 3.1.3.2.4 Crossrecesses SeeISO4757foralldimensionsexceptpen- etrationdepths.Forpenetrationdepthssee appropriateproductstandard. 3.1.3.2.5 Hexalobularreces
45、ses SeeISO10664foralldimensionsexceptpen- etrationdepths.Forpenetrationdepthssee appropriateproductstandard. 3.1.4Otherfeatures 3.1.4.1 Headdiameter Figure12 h13 a a IT13for knurledheads Combinedcontrol ofdiameterand heightforcounter- sunkheadscrews inaccordance withISO7721or ISO10642. Figure13 h14
46、ENISO47591:2000ISO-95741:(0002)E 8 Toleranceforproductgrades Feature ABC Notes 3.1.4.2 Headheight (exceptforhexagonheads) Figure14 uM5:h13 M5:h14 Figure15 Forcountersunkheadscrewskisdefiniedin productstandardsonlyasamaximum. Combinedcontrol ofdiameterand heightforcounter- sunkheadscrews inaccordance
47、 withISO7721or ISO10642. d wmin =s min IT16forwidthacrossflats2,5to4 0,15 0,40 4to6 0,15 0,50 6to14 0,15 0,60 14to36 0,20 0,80 36 0,30 1,0 3.1.4.3 Bearingfacediameterand heightofwasher-facedportion a Referencedatumford w Figure16 Forproduct gradeCa washerfaceis notmandatory. ENISO47591:2000ISO4-9571
48、:(0002)E9 Toleranceforproductgrades Feature ABC Notes a Referencedatumford w Figure17 d w isdefinedinproductstandardsonlyasa minimum. Thread diameter d w u min. 2,5 d kmin 0,14 2,5 5 d kmin 0,25 510d kmin 0,4 10 16 d kmin 0,5 Forproductgrade Aonly 16 24 d kmin 0,8 24 36 d kmin 1 a Referencedatumford w Figure18
