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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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