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1、k$'D.'I.CENEN*E!bL57-391E340458900397304Ez*EUROPEANSTANDARDEN26157-1:1991NORMEEUROPEENNEEUROPAISCHENORMOctober1991~~UDC621.882.2:620.191Descriptors:Fasteners,bolts,screws,studs,surfacedefectsEnglishversionFasteners-Surfacediscontinuities-Part1:Bolts,screwsandstudsforgeneralrequirem
2、ents(IS06157-1:19881Elementsdefixation-DefautsdeVerbindungselemente-surface-Partie1:Boulons,visetOberflächenfehler-Teil1:goujonsd'usagegénéral(IS0SchraubenfürallgemeineAnforderungen6157-1:1988)(IS06157-1:1988)ThisEuropeanStandardwasapprovedbyCENon1991-10-10andisidenticaltotheIS0stan
3、dardasreferredto.CENmembersareboundtocomplywiththeCENICENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicati
4、ontotheCentralSecretariatortoany--```,-`-`,,`,,`,`,,`---CENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatu
5、sastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.CENEuropeanCommitteeforStandardizationComitéEuropeendeNormalisa
6、tionEuropäischesKomiteefürNormungCentralSecretariat:ruedeStassart36,B-1050Brussels(clCEN1991CopyrightreservedtoallCENmembersRef.No,EN26157-1:1991ECopyrightEuropeanCommitteeforStandardizationProvidedbyIHSunderlicensewithCENNoreproductionornetworkingpermittedwithoutlicensefromIHSNotfo
7、rResale~~~~CENEN*ZbL57-L'7163404589OOLï73LbPage2EN26157-1:1991In1990,IS06157-1:1988wassubmittedtotheCENP.Q.-procedure.FollowingthepositiveresultoftheP.Q.,CEN/BTagreedtosubmitIS06157-1:1988withthefollowingmodificationstoFormalVote.IntheFrenchversion,replace:-"boulon'by"vis',-'boulon,
8、vis'by"vis'.Inaccor