Toro Groundsmaster 1200 - Page 22

StandardTorqueforDry,ZincPlated,andSteelFasteners(Metric
Fasteners)
ThreadSize
Class8.8Bolts,Screws,and
StudswithRegularHeightNuts
(Class8orStrongerNuts)
Class10.9Bolts,Screws,and
StudswithRegularHeightNuts
(Class10orStrongerNuts)
M5X0.857±6in-lb644±68N∙cm78±8in-lb881±90N∙cm
M6X1.096±10in-lb1085±113N∙cm133±14in-lb1503±158N∙cm
M8X1.25
19±2ft-lb
26±3N∙m
28±3ft-lb
38±4N∙m
M10X1.5
38±4ft-lb
52±5N∙m
54±6ft-lb
73±8N∙m
M12X1.75
66±7ft-lb
90±10N∙m
93±10ft-lb
126±14N∙m
M16X2.0
166±17ft-lb
225±23N∙m
229±23ft-lb
310±31N∙m
M20X2.5
325±33ft-lb
440±45N∙m
450±46ft-lb
610±62N∙m
Note:Reducethetorquevalueslistedinthetableaboveby25%forlubricated
fasteners.Lubricatedfastenersaredenedasthreadscoatedwithalubricant,
suchasengineoil,orathreadsealant,suchasLoctite.
Note:Thetorquevaluesmustbereducedwheninstallingthefastenersinto
threadedaluminumorbrass.Thespeciedtorquevalueshouldbedetermined
basedonthealuminumorbasematerialstrength,fastenersize,lengthofthread
engagement,etc.
Note:Thenominaltorquevalueslistedabovearebasedon75%oftheminimum
proofloadspeciedinSAEJ1199.Thetoleranceisapproximately±10%ofthe
nominaltorquevalue.
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
SpecicationsandMaintenance:TorqueSpecications
Page2–8
Groundsmaster®1200Pull-BehindRotaryMower
18235SLRevA