INTRODUCTION
GRADE2*GRADE5,5.1or5.2GRADE8or8.2GRADEL9(Alloy)
Dry**
Lubricated
**
Dry**
Lubricated
**
Dry**
Lubricated
**
HeadNut
SIZE
Nm
lbf/ft
Nm
lbf/ft
Nm
lbf/ft
Nm
lbf/ft
Nm
lbf/ft
Nm
lbf/ft
Nm
lbf/ft
Nm
lbf/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,orfastenerswithphosphateandoilcoatings.
"Dry"meansplainorzincplatedwithoutanylubrication.
SQ-044V1212/10/2004
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