Service Manual

OtherTorqueSpecications
SAEGrade8SteelSetScrews
RecommendedTorque
ThreadSize
SquareHeadHexSocket
1/4-20UNC
140±20in-lb73±12in-lb
5/16-18UNC
215±35in-lb145±20in-lb
3/8-16UNC35±10ft-lb18±3ft-lb
1/2-13UNC75±15ft-lb50±10ft-lb
ThreadCuttingScrews
(ZincPlatedSteel)
Type1,Type23orTypeF
ThreadSizeBaselineTorque**
No.6-32UNC
20±5in-lb
No.8-32UNC
30±5in-lb
No.10-24UNC
38±7in-lb
1/4-20UNC
85±15in-lb
5/16-18UNC
110±20in-lb
3/8-16UNC
200±100in-lb
WheelBoltsandLugNuts
ThreadSizeRecommendedTorque*
7/16-20UNF
Grade5
65±10ft-lb
88±14N∙m
1/2-20UNF
Grade5
80±10ft-lb
108±14N∙m
M12X1.25
Class8.8
80±10ft-lb
108±14N∙m
M12X1.5
Class8.8
80±10ft-lb
108±14N∙m
*Forsteelwheelsandnon-lubricatedfasteners
ThreadCuttingScrews
(ZincPlatedSteel)
ThreadsperInch
ThreadSize
TypeATypeB
BaselineTorque**
No.6182020±5in-lb
No.8151830±5in-lb
No.10121638±7in-lb
No.12111485±15in-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
SpecicationsandMaintenance:TorqueSpecications
Page2–14
Groundsmaster
®
4100-D&4110-D
13203SLRevF