INTRODUCTION
GRADE2*GRADE5,5.1or5.2GRADE8or8.2GRADEL9(Alloy)
Dry**
Lubricated
**
Dry**
Lubricated
**
Dry**
Lubricated
**
HeadNut
SIZE
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
Nm
lb/ft
5/8
UNC
14911011585231170176130325240244180258190278205
3/4
UNF
237175176130353260271200515380380280359265393290
3/4
UNC
271200190140407300298220570420420310447330481355
7/8
UNF
231170170125583430434320814600610450644475685505
7/8
UNC
244180190140637470475350909670678500705520793585
1
UNF
33925025819086864065148012349109226807465501051
775
1
UNC
3802802852109767207325401383102010317609497001220900
1-1/8
UNF
47535036627010717908005901749129013159701390102515591150
1-1/8
UNC
542400407300120789090967019531440146410801559115017971325
1-1/4
UNF
67850051538015191120113984024681820184413601898140021701600
1-1/4
UNC
74655057042016811240126193027262010204815102170160023731750
1-1/2
UNF
1180870881650264419501980146042853160321423703932290044073250
1-1/2
UNC
1329980990730298322002224164048273560362126704475330049493650
IMPORTANT:DONOTusethesevaluesifadifferenttorquevalueortighteningprocedureisgivenforaspecic
application.Torquevalueslistedareforgeneraluseonly.Checktightnessoffastenersperiodically.Shearboltsare
designedtofailunderpredeterminedloads.Alwaysreplaceshearboltswithidenticalgrade.
NOTES
•
*-Grade2appliesforhexcaps(nothexbolts)upto152mm(6in)long.Grade1appliesforhexcapscrews
over152mm(6in)long,andforallothertypesofboltsandscrewsofanylength.
•
**-"Lubricated"meanscoatedwithalubricantsuchasengineoil,orfasterswithphosphateandoilcoatings."Dry"
meansplaindorzincplatedwithoutanylubriation.
TORQUESPECIFICATIONS-METRICHARDWARE
GRADE8.8Bolts,NutsandStudsGRADE10.9Bolts,NutsandStuds
DryDry
SIZE
Nm
lb/inlb/ft
Nm
lb/inlb/ft
M43to431to355to644to49
M55to649to558to971to79
M610to1184to9414to15120to136
M823to26229to27733to37293to329
M1046to51408to46065to7448to54
M1280to9059to66114to12885to94
M14128to14594to106183to205136to153
M16200to220149to161285to320208to235
M20400to450293to330555to620406to460
M24690to780510to575955to1075705to790
8426083121/08/2009
11