IS 1367-8 (2002): Technical Supply Conditions for Threaded ...

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2 > 0 B Bhart hari N ti atakam Knowledge is such a treasure which cannot be stolen Invent a New India Using Knowledge IS 1367-8 (2002): Technical Supply Conditions for ThreadedSteel Fasteners, Part 8: Prevailing Torque Type SteelHexagon Nuts - mechanical and Performance Properties [PGD31: Bolts, Nuts and Fasteners Accessories]IS1367(Part8):2002 ISO2320:1997(m~@%P7)IndianStandardTECHNI CALSUPPLYCONDITIONSFORTHREADEDSTEELFASTE NERSPART8 PREVAILINGTORQUETYPESTEELHEXAGONNUTS MECHANICALANDPERFORMANCEPROPERTIES(Third Revision) @BIS2002 BUREAUOFINDIANSTANDARDSMANAKBHAVAN,9 BAHADURSHAHZAFARMARGNEWDELHI110002 December2002 PriceGroup8 Bolts,NutsandFastenersAccessoriesSection alCommittee,BP33 NATIONALFOREWORDThisIndianStandard(Part8 )(ThirdRevision)whichisidenticalwithISO2 320:1997 Prevailingtorquetypesteelhexagonnuts Mechanicalandperformanceproperties issuedbytheInternationalOrganizationforS tandardization(ISO)wasadoptedbytheBureau ofIndianStandardsontherecommendationofth eBolts, :1983theCommitteedecidedtotakeuptherevis ionofthisstandardaligningwithISO2320 ,however, :a)Whereverthewords InternationalStandard appearreferringtothisstandard,theyshould bereadas IndianStandard.

3 B)Comma(,)hasbeenusedasadecimalmarkerwhi leinIndianStandards,thecurrentpracticeis touseapoint(.)asthedecimalmarker,Inthisa doptedstandard, :InternationalCorrespondingIndianStandar dDegreeofStandardEquivalence1s068-1:1,IS 4218(Part1):2001 ISOG eneralpurposemetricIdenticalscrewthreads :Part1 Basicprofile(secondrevision)ISO261:1,IS4 218(Part2):2001 ISOG eneralpurposemetricdoscrewthreads:Part2 Generalplan(secondrevision)ISO898-1:1999 IS1367(Part3):2002 Technicalsupplyconditionsfordothreadedst eelfasteners:Part3 Mechanicalpropertiesoffastenersmadeofcar bonsteelandalloysteel Bolts,screwsandstuds(fourthrevision)ISO8 98-2:1992IS1367(Part6):1994 Technicalsupplyconditionsforthreadedstee lfasteners:Part6 Mechanicalpropertiesandtestmethodsfornut swithspecifiedproofloads(thirdrevision)I SO898-6:1994IS13096:2000 Fasteners Hexagonnutswithspecifiedproofloadvalues Finepitchthread Mechanicalproperties(firstrevision)dodo1 ,Sincepublishedin1998.

4 (Continuedonthirdcover) indianStandardIS1367(Part8):2002 TECHNICALSUPPLYCONDITIONSFOR S*2320: 997 THREADEDSTEELFASTENERSPART8 PREVAILINGTORQUETYPESTEELHEXAGONNUTS MECHANICALANDPERFORMANCEPROPERTIES(Third Revision)1scopeThisInternationalStandard specifiesthemechanicalandperformanceprop ertiesforprevailingtorquetypesteelhexago nnuts(includingthosewithflange)whenteste doveranambienttemperaturerangeof10 Cto35 withnominalthreaddiametersuptoandincludi ng39mm; oftriangularISOthreadaccordingtoISO68;-w ithdiameter/pitchcombinationsaccordingto ISO261;-withthreadtolerances6 HaccordingtoISO965-2;-withspecificmechan icalrequirements;-withdimensionsasspecif iedinproductstandardsprovidedtheymakeref erencetothisInternationalStandard;-withi nthetemperaturerange 50 Cto+300 Cforallmetaltypenuts; withinthetemperaturerange 50 Cto+120 Cfornon-metallicinserttypenuts ),Itdoesnotapplytonutsrequiringspecialpr opertieswhichmayrequirespecialmaterialso rcoatingstoimprove-weldability; corrosionresistance; ,throughreferenceinthistext, , , : ,ISOgeneralpurposescrewthreads-Basicprof ile Part7 : 3),ISOgeneralpurposemetricthreads- ) )Tobepublished.

5 (RevisionofISO68:1973)3)Tobepublished.(R evisionofISO261:1973) IS1367(Part8):2002 ISO2320:1997 ISO898-1:-4),Mechanicalpropertiesoffaste nersmadeofcarbonsteelandalloysteel-Part1 :Bolts, :1992,Mechanicalpropertiesoffasteners-Pa rt2 :1994,Mechanicalpropertiesoffasteners-Pa tt6 ,/S0generalpurposemetricscrewthreads-Tol erances-Part2 : 0 , :- , :1981, : 0),Metallicmaterials-Vickershardnesstest -Part1 ,Metallicmaterials-Hardnesstest-Rockwell test(scalesA-B-C-D-E-F-G-H-K). :Nutwhichisnotfree-runningonamatingthrea dbyvirtueofaself-containedprevailingtorq uefeature, , ,namely-nutswithnominalheights=0,8d(effe ctivelengthsofthreadz0,6d)aredesignatedb yanumbertoindicatethemaximumappropriatep ropertyclassofboltswithwhichtheymaybemat ed,seetable1; nutswithnominalheightsz0,5dand<0,8d(effe ctiveheightofthreadz0,4dandc0,6d)aredesi gnatedbyacombinationoftwonumbers:theseco ndindicatesthenominalstressunderproofloa donahardenedtestmandrel, )Tobepublished.

6 (RevisionofISO898-1:1988)5)Tobepublished .(RevisionofISO965-2:1980)6)Tobepublishe d.(RevisionofISO4042:1989)7)Tobepublishe d.(RevisionofISO4753:1983)8)Tobepublishe d.(RevisionofISO6507-1:1982;ISO6507-2:19 83;ISO6507-3:1989;ISO409-1:1982;ISO409-2 1983andlSO/DIS409-3)2 IS1367(Part8):2002 ISO2320:1997 Table1 Designationsystemfornutswithnominalheigh ts= Ingenera!,nutsofa isnotrecommendedthata heat-treatedall-metalnutbecombinedwitha Designationsystemandstressesunderprooflo adfornutswithnominalheigths*0,5d andc0,8d1 IIIIP ropertyclassINominalstressIAotualstressu nderofnutunderproofloadproofloadIN/mm N/mm isrecommendedthatusersandmanufacturersco nsiderthemaximumlimitsforsulphur,mangane se,boronandotherintentionallyaddedelemen tswhichmayresultincomponentfailure, (checkanalysis),% ;6 60,500,0600,1508; 9;04 )80,580,250,0600,150ion;052 102 0,580,300,0480,058122)122)0,580,450,0480 ,0581)Nutsmaybemanufacturedfromfree,cutt ingsteel, ,phosphorusandleadcontentsareper-missibl eS0,34%,P 0,11 ?

7 40andPb0,35%.2)Alloyingelementsmaybeadde dif IS1367(Part8):2002 ISO2320 ,8(style1,>M16), ,8(style1), , , ,whenused,mustbesuitableforassemblyspeed sfrom10to500 5 cto+40 Inthecasewherenutsaregivenaprotectivecoa tingorcleaningfollowingdeliverytotheuser ,thenutmanufacturershallnotbeheldrespons ibleforfailureofthenuttomeetdimensional, , Table4 Mechanicalproperties,coarsethread1classs tressunder05meadmmstressunderIOOd4 ,stateIstyleII load4 IHVN/mm :2: bin5 6 Vkkersstressstressunderkxld4U/mm 520560590610630stressunderload4N/mm VlckersVkkersHVVkkershordnessNutNutGIeNu tTstateIeneitheruench2nor3mparadHVmmHV4N /mm m670-a6--%iY-720HV5N/mm T655670660920-+ * )mparad146I690No0 MUIII mNo0 NltneadmmTable4(concludedunderload4 WckenhardnessHVNutunderl -4 VickeraharctnessIHVN utstressunderproofVickeraloads,IHVN/mm ~uenchedand1empered1-Wmm ~1040quenched940302nor1040272353and1temp ered1050tempered9201060 NOTE , ~idedkxuts,N/mm , ,andwhichsatisfytieproofioadtest, ) Table5 Mechanicalproperties,finepitchthreadNomi nalthreaddmmeterdmm~~d<3904 StressunderVickersproofhardnessloadSpHVN /mm <(<10770310<(f<1678016<ds3387033<d==3893 0 Nominalthreadd&meterdmm8sIfs1010<(=s1616 <{< }StressunderproofloadSpN/mm ioad $PN/mmz690 Viikershardness+ !)

8 Emrmred-PropertycfassstressstressIood + stressunderViikersNutunderVkkersNu:under proofhardnessproofhardnessloadproofSpHVS PHVSpN/mm quenchedI295I353andtempered211 IINOTE ,minimumhardnessisnotmandato~ ,andwhichsatisfytheproof-loadtest, )Forthreaddiametersabove16mm, IS1367(Part8):2002 ISO2320:1997 Table6 Proofloadvalues-Coarsethread(seealsoISO8 98-2).. M3M4=M6M7 MSM1OM12M14M16M18M20M22M24M27M30M33M36M3 9 PropertyclassNominalPitchatraaaofthearaa ofthrsedthe04I0515I6I8I9I10I12mandrelPro ofload(&xS0)mm0,50,70,8111,251,51,75222, 52,52,5333,53,544 ThreaddxPl)M8xlM1OX1M1OX1,25M12x1,25M12x 1,5M14x1,5M16X1,5M16x1,5M18X2M20)&l,5-R% -M22x2M24x2M27x2M30x2M33x2M36x3M39x3 Asmmz5,038,7814,220,128,936,658,084,3115 157192245303353459561694617976 NominalareaofthamandrelAsmmz39,264,561,2 92,166,112516721520427225833331838449662 17618651030thin191033405400764011 OOO1390022000320004370059700730009310011 5100134100174400213200263700310500370900 thinIstyle1I*Ie1 Istyle125001260013000I4000m42200I5140015 9000I7420057500170200180500!

9 1012007650019580011099 OOI138200&170900218100269700314200408500 498300617700727100688600style2style14500 5200790091501300014800184002090026400301 0034400381005450060300801008650010930012 0600149200164900176000203500225400259700 2788003212003246003742004223004865005161 0059470063850073560075160086600089790010 35000 Table7 Proofloadvalues-Finepitchthread(seealsoI SO898-6)S!Y!a570010000162002290032900417 006610098600134600183700 1010016300231003320042500673001003001369 0016680023040029400036360042360055080067 32008328009804001171000 Propertyclass04I05I6I8I10I12 Proofload(,4,xSP)Nthinthinstyle1style1st yle2style1style2style2148001960030200374 0034900431004130047000245003220049600616 0057400710006800077400233003060047100584 0054500673006460073400350004600071800860 0082000102200972001105003350044000667008 4100784009780092900105700475006250097500 1194001112001387001319001500006350083500 1303001595001486001854001762002004006170 0107500187000221500-232200-7750010200017 7500210100-220300-1034001360002366002802 00-293800-98000129000224500265700-278600 -126500166500289700343000-359700-1208001 59000276700327500-343400-145900192000334 100395500-414700 168500248000431500510900-535700-23600031 0500540300639600-670600-2692003805006621 00783800-821900-328700432500804400942800 -934200-3914005150009579001123000-111200 0-Pisthepitchofthread Table8 Clampingforcesandprevailingtorquesforhex agonnutsandhexagonnutswilhflangewithcoar sethread~force,kNPrevaffingtorque,NmProP s1 tyCbS!

10 #S04,5,6,ProperfyClcrsses05,TfueOd8ond9l ound12 MPrOpertyclassFiratFirstPifthFiratFirstF ifthassembly removalremovalassambly removalremoval, ,4?, ,72,22,53,13,70,430,120,080,60,150,1M42, 53,32,52,93,84,35,56,40,90,180,121,20,22 0,15M545,244,76,26,96,910, ,290,22,10,350,24M65,77,45,76,68,79,812, 514,630,450,340,550,4M78,210,78,39,512,6 14,118,021,04,50,650,4560,850,6M610,313, 510,412,115,917,822,826,660,850,68?, ,421,516,519,125,328,336,142,410,51,5114 21,4M1223,831,22427,836,741,152,561,415, 52,31,6213,12,1M1432,542,532,8385056,171 ,684243,32,3314,43M1644,4584551,866,276, 597,5114324,!$34264,2M1856,1735563,486,2 -1191404264,25685,5M2071,7947081110-1521 78547,55,37210,57M2288,711688100136-7892 20889,56,590139M241031351011?6259-220256 8011,581081510,5M27134175107152206-28633 49413,5101231712M30164275131185253-35040 610816121401914M332032651612283?2-432505 122781416021,515,5M36234306180289368-509 59413621161802417,5M39285373227322440-60 8710160231820026,519,5 NOTES1 Theclampingforcesforpropartyclass5 mmto24mminclusive,and75% ,8,9,10and12nutsareequalto75% , , , , Theevalutionofresultsfromtheprevailingto rquetestbystatisticalprocesscontrol(SPC) ).