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GroupstandardVW60708-1
Issue2015-11
Class.No.:61187
Descriptors:fastener,weldstud,studbolt,coarsethreadstud,stud,arcwelding
StudsforArcStudWelding
Part1:StudswithaMetricISOThread–DimensionsandDesignTypes
Preface
ThestudswithametricISOthreadforarcweldingandwitharcignitionthataredefinedinthis
standard(seeVolkswagenstandardVW01107
[1]
)arebasedonthespecificationsforstudbolts
withflange(typePS)asperGermanInstituteforStandardization(DIN)standardDINENISO13918:2008-10.
StudswithametricISOthread("studbolts"forshort)thatarespecifiedaspreferredpartsarecom‐piledinVW60000
[2]
andcanberecognizedinthestandardpartsmanagementsystem
NVS
bya"V"status.
Previousissues
VW60708:2012-01
Changes
ThefollowingchangeshavebeenmadetoVW60708:2012-01:
–VW60708splitintopart1forstudswithametricISOthreadandpart2forcoarsethreadstuds
–New
table4
withnominallengthrangesadded
–
Section4
:Aluminumadded
–
AppendixA
and
AppendixB
added
–Standardedited.
Alwaysusethelatestversionofthisstandard.
Thiselectronicallygeneratedstandardisauthenticandvalidwithoutsignature.
TheEnglishtranslationisbelievedtobeaccurate.Incaseofdiscrepancies,theGermanversionisaloneauthoritativeandcontrolling.
Page1of9
Technicalresponsibility
EKDV/3Boris
Jülge
Tel.:
+495361935083
TheStandardsdepartment
EKDV/3Tim
Hofmann
EKDV
Tel.:
+495361927995
MaikGummert
Allrightsreserved.NopartofthisdocumentmaybeprovidedtothirdpartiesorreproducedwithoutthepriorconsentofoneoftheVolkswagenGroup’sStandardsdepartments.
©VolkswagenAktiengesellschaftVWNORM-2014-06a-patch5
Page2
VW60708-1:2015-11
1Scope
Thisstandardexpandsuponthecontentof
DINENISO13918:2008-10,section9.7(typePS)
toincludeadditionaldimensionsaswellasthedesigntypesBK,BKF,andBKKforstudswithamet‐ricISOthread.
2Symbolsandabbreviations
KTLCathodicelectrocoating
PLead
aDistancefromthecontactsurfacetothefirstcompletethread
c1FlangeheightindesigntypeBKF(equivalenttolFasperVW01107)
c2CollarthicknessattheweldingtipindesigntypeBKK
dMajordiameter(nominaldiameter)ofthemetricthread(equivalenttod1asper
DINENISO13918
)
d2DiameteroftheweldingtipindesigntypeBK
d3FlangediameterindesigntypeBKF(equivalenttodFasperVW01107)
d4DiameteroftheweldingtipindesigntypeBKF
d5DiameteroftheweldingtipindesigntypeBKK
dgkMinordiameteroftheexternalthread(equivalenttod3asper
VW11610
and
VW11611
)
h1HeadheightindesigntypeBK
h2HeadheightindesigntypeBKF
h3TaperedheadheightindesigntypeBKK
lNominallength
3Dimensionsanddesigntypes
Fordimensionsanddesigntypes
1)
,see
figure1
to
figure4
and
table1
to
table4
.
Legend
1Freeofburrs
Figure1–Studbolt,designtypeBK
1)Thedesigntypeisidentifiedbytheheadgeometry(BK:head,BKF:headandflange,BKK:taperedhead)withtheweldingtip.
Page3VW60708-1:2015-11
Legend
1
a)
Figure2–DesigntypeBKF
Freeofburrs
Shapeasresultingfromproduction
Figure3–DesigntypeBKK
Theheadheightandthenominallengthdecreaseby(0.8±0.5)mmduetomeltingmateriallossafterweldingthe7°stud;see
figure4
.
Dimensionsinmillimeters
Figure4–Applicationexampleforstudboltsafterwelding
Table1–DimensionsofdesigntypeBK
Dimensionsinmm
Dimensions
Threadsize
M4
M5
M6
M8
a
0.8-0.6
1.0-0.6
d2
5.2-0.4
6.2-0.4
7.2-0.4
9.2-0.4
h1
0.4+0.4
0.55+0.3
0.8+0.4
Page4
VW60708-1:2015-11
Table2–DimensionsofdesigntypeBKF
Dimensionsinmm
Dimensions
Threadsize
M4
M5
M6
M8
a
0.8-0.6
1.0-0.6
c1
0.6+0.4
1.1+0.4
1.3+0.4
d3
6.2-0.4
8.2-0.4
8.2-0.4
and
13.2-0.4
14.2-0.4
d4
5.2-0.4
6.7-0.4
7.2-0.4
9.2-0.4
h2
2.2-0.4
2.5-0.4
2.8-0.4
or
3.5-0.4
Table3–DimensionsofdesigntypeBKK(onlyforAl/Mgalloys)
Dimensionsinmm
Dimensions
Threadsize
M4
M5
M6
M8
a
0.8-0.6
1.0-0.6
c2
0.4-0.2
0.5-0.3
d5
6.2-0.4
7.2-0.4
9.2-0.4
10.2-0.4
h3
2±0.15
2.5±0.15
Fornominallengthsofstudbolts(forcommonnominallengthranges,see
table4
),thedeviations±IT12(degreeoffundamentaltolerance)asper
DINENISO286-1
apply.
Table4–Commonnominallengthrangesofstudbolts
Thread
Nominallengthrange
M4
8mm≤l≤20mm
M5
10mm≤l≤40mm
M6
12mm≤l≤40mm
M8
16mm≤l≤40mm
Page5VW60708-1:2015-11
4TechnicalSupplySpecifications
See
table5
.
Table5–TechnicalSupplySpecifications
Material
Standard
Steel(forpropertyclass8.8),
weldable
Aluminum
ENAW-5019(ENAW-AlMg5)
TechnicalSupplySpecifica‐
tion
TL1318
DINEN573-3
Generalrequirements
DINISO8992
Thread
VW11610
,
VW11611
Mechanicalproperties
Propertyclass/material
Standard
8.8
AL2
DINENISO898-1
DINEN28839
Marking
Standard
Ontheroundedboltend
DINENISO898-1
DINEN28839
,
DINENISO898-1
Productgrade
Limitdeviations,
Standard
tolerancesofshapeandposi‐tion
A
DIN267-2
,
DINISO4759-1:1980-05
Surfacecondition
Roughnessdepthasper
DIN267-2
Surfaceflawsasper
DINEN26157-3
Code
Surfacefinish
Standard
Ofl-c340,Ofl-k110
Pickledandpassivated
VW13750
TL82428
Acceptancetest
DINENISO16426
5Designation
ExampledesignationofastudoftypePS
2)
withanM8metricISOthread,nominallength
l=30mm,designtypeBKF,dogpointandconeendAVS
3)
,propertyclass8.8andsurfaceprotec‐tion(Ofl)c340:
STUDBOLTVW60708–PS–M8×30–BKF–AVS–8.8–Ofl-c340–SCS
4)
or
STUDBOLTN91065602
5)
6)
2)asper
DINENISO13918:2008-10
,preferredtype
3)asper
VW60424
4)Forstudswithapaintscrapepoint(SCS),theremaybedeviationsfromthetighteningtorqueasper
VW01126-1
.Inthiscase,contacttheAudiAG"Body/WholeVehicleStrength"department(I/EG-713,costcenter6755).
5)Indexforpropertyclass,surface,anddesignasperstandardpartdrawingormasterdatalist(MDL).
6)Forreleasedparts,seethe
NVS
orVW60000
[2]
.
Page6
VW60708-1:2015-11
6Applicabledocuments
Thefollowingdocumentscitedinthisstandardarenecessarytoitsapplication.
SomeoftheciteddocumentsaretranslationsfromtheGermanoriginal.ThetranslationsofGer‐
mantermsinsuchdocumentsmaydifferfromthoseusedinthisstandard,resultinginterminologi‐calinconsistency.
StandardswhosetitlesaregiveninGermanmaybeavailableonlyinGerman.Editionsinotherlanguagesmaybeavailablefromtheinstitutionissuingthestandard.
TL1318
UnalloyedSteelandLow-AlloySteelforBoltsandNuts;MaterialRe‐
quirements
TL82428
WashingandPassivationofAluminumParts;Requirements
VW01126-1
JoiningSystems;TighteningTorquesforThreadedJoints
VW11610
MetricISOThread;LimitDimensionsforMediumToleranceClass;Ex‐
ternalThreads6g/InternalThreads6H
VW11611
MetricISOThread;LimitDimensionswithProtectiveCoatingforMedium
ToleranceClass;ExternalThreads6gh/InternalThreads6H
VW13750
SurfaceProtectionforMetalParts;SurfaceProtectionTypes,Codes
VW60424
DesignationInformationforScrews,Bolts,Nuts,Washers,andRivets;
Shapes,TypesandAdditionalSpecifications
DIN267-2
Fasteners;technicaldeliveryconditions;designanddimensionalaccura‐
cy
DINEN26157-3
Fasteners;surfacediscontinuities;bolts,screwsandstudssubjectto
specialrequirements
DINEN28839
Mechanicalpropertiesoffasteners;nonferrousmetalbolts,screws,
studsandnuts
DINEN573-3
Aluminiumandaluminiumalloys-Chemicalcompositionandformof
wroughtproducts-Part3:Chemicalcompositionandformofproducts
DINENISO13918:
Welding-Studsandceramicferrulesforarcstudwelding
2008-10
DINENISO16426
Fasteners-Qualityassurancesystem
DINENISO286-1
Geometricalproductspecification(GPS)-ISOcodesystemfortoleran‐cesonlinearsizes-Part1:Basisoftolerances,deviationsandfits
DINENISO898-1
Mechanicalpropertiesoffastenersmadeofcarbonsteelandalloysteel-Part1:Bolts,screwsandstudswithspecifiedpropertyclasses-Coarsethreadandfinepitchthread
DINISO4759-1:1980-05
TolerancesforFasteners–Part1,Bolts,ScrewsandNutswithThreadDiameters>=1.6<=150mmandProductGradesA,BandC
DINISO8992
Fasteners-Generalrequirementsforbolts,screws,studsandnuts
Page7VW60708-1:2015-11
7Bibliography
[1]
VW01107
,ArcWeldingofStuds,Nuts,andSheetMetalSegmentsonSheetSteel
[2]
VW60000
,VariantReductionforFasteners(VRV);VRVPreferredPartCatalog
[3]
TL1550
,StripandSheet–UncoatedandSurface-Treated,withDefinedYieldPointfor
ColdWorking
[4]
VW50065
,SteelFlatStockforColdWorking;MaterialsRequirements
[5]
TL091
,Sheets,StripsMadeofAlMgSiAlloys;MaterialsRequirements
[6]
VW60564
,TestParametersforBlindRivetScrewsandNuts,ClinchStuds,InsertNuts,
PunchingBolts,PierceNuts,andPierceStuds
[7]
VW60000,supplement1
,VariantReductionforFasteners(VRV)–PartsRequestsand
BasicsofDefiningPreferredParts
Page8
VW60708-1:2015-11
AppendixA(informative)Strengthofjoints
Thevaluesforminimumheadtensileforceandminimumtorquein
tableA.1
applytojointswith
steelstudboltsweldedonsheetsteel
7)
withaminimumtensilestrengthRm=320MPa(e.g.,steelgrade220asperTL1550
[3]
,steelCR240LAasperVW50065
[4]
);andtoaluminumstudbolts
weldedonsheetsmadeofaluminumalloysofseries6000(e.g.,asperTL091
[5]
).
Thescrew-inrotationalspeedmustnotexceed600rpm.
Interpolationmustbecarriedoutlinearlyuntilthegreatestindicatedsheetthicknesstisreached(seeexamplecalculationin
tableA.1
).
NOTEA.1:The
StructuralDurability
department(EGDB,costcenter1712)canprovidesupportduringtesting.
TableA.1–Minimumheadtensileforceandminimumtorqueforjointswithstudbolts
Thread
steel
Sheetthickness
a)
t
mm
aluminum
Minimum
headtensile
force
FHT,min
N
Minimum
torque
Mmin
Nm
Sheetthick‐
ness
t
mm
Minimum
headtensile
force
FHT,min
N
Minimum
torque
Mmin
Nm
M4
0.5
1200
2.4
0.75
1500
1.7
1.25
2000
3.6
1.25
2000
2.2
M5
0.5
1200
5.3
0.75
1500
3.4
1.25
2000
7.6
1.25
2000
4.3
M6
0.5
1400
9.1
0.75
1700
6.3
1.75
2500
12.8
1.75
2500
8
M8
0.75
2300
25.2
0.75
2300
13
3
4000
33
3
4000
17
ExamplefortheinterpolationoftheminimumheadtensileforceFHTI,minandtheminimumtorqueMI,minforasteelstudboltwithanM6threadandsheetthicknesstI=1mm:
=10.58Nm
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