Toro 08743 - Other Torque Specifications; Conversion Factors

OtherTorqueSpecications
SAEGrade8SteelSetScrews
RecommendedTorque
ThreadSize
SquareHeadHexSocket
1/4-20UNC14to18N·m(120to160in-lb)7to9N·m(61to85in-lb)
5/16-18UNC20to28N·m(180to250in-lb)14to18N·m(125to165in-lb)
3/8-16UNC34to61N·m(25to45ft-lb)20to28N·m(15to21ft-lb)
1/2-13UNC81to122N·m(60to90ft-lb)54to81N·m(40to60ft-lb)
ThreadCuttingScrews(ZincPlatedSteel)
Type1,Type23orTypeF
ThreadSizeBaselineTorque**
No.6-32UNC2to3N·m(15to25in-lb)
No.8-32UNC3to4N·m(25to35in-lb)
No.10-24UNC4to5N·m(31to45in-lb)
1/4-20UNC8to11N·m(70to100in-lb)
5/16-18UNC10to14(90to130in-lb)
3/8-16UNC11to34(100to300in-lb)
WheelBoltsandLugNuts
ThreadSizeRecommendedTorque*
7/16-20UNFGrade574to102N·m(55to75ft-lb)
1/2-20UNFGrade594to122N·m(70to90ft-lb)
M12X1.25Class8.894to122N·m(70to90ft-lb)
M12X1.5Class8.894to122N·m(70to90ft-lb)
*Forsteelwheelsandnon-lubricatedfasteners
ThreadCuttingScrews(ZincPlatedSteel)
ThreadsperInch
ThreadSize
TypeATypeB
BaselineTorque**
No.61820
2to3N·m(15to
25in-lb)
No.81518
3to4N·m(25to
35in-lb)
No.101216
4to5N·m(31to
45in-lb)
No.121114
8to11N·m(70to
100in-lb)
**Theholesize,materialstrength,materialthickness,andmaterialnishmustbe
consideredwhendeterminingthespeciedtorquevalues.Allthetorquevalues
arebasedonthenon-lubricatedfasteners.
ConversionFactors
in-lbX11.2985=N∙cmN∙cmX0.08851=in-lb
ft-lbX1.3558=N∙mN∙mX0.7376=ft-lb
SandPro
®
3040and5040
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SpecicationsandMaintenance:TorqueSpecications
20251SLRevA