Grove Published 11-10-2014, Control # 524-00 1-19
RT880E SERVICE MANUAL INTRODUCTION
Table 1-12: UNC (Coarse) Thread: Torque Values for
Stainless Steel Fasteners with Oil Lubrication
NOTE: Stainless steel fasteners tend to gall while being
tightened. To reduce this risk, lubricate the threads
with oil or molybdenum disulfide and torque at low
speeds without interruptions. Do not use excessive
pressure. Impact wrenches are not recommended.
Table 1-13: Metric Coarse Thread: Torque Values for
Stainless Steel Fasteners with Oil Lubrication
NOTE: Stainless steel fasteners tend to gall while being
tightened. To reduce this risk, lubricate the threads
with oil or molybdenum disulfide and torque at low
speeds without interruptions. Do not use excessive
pressure. Impact wrenches are not recommended.
Weld Studs
Unless otherwise specified the following grade 2 torque
values (+/- 10%) apply.
Table 1-14: Weld Stud Torque Values
Size
Torque Value
lb-in lb-ft
#5 (0.125) 6.9 —
#8 (0.164) 18 —
#10 (0.190) 21 —
1/4 68 —
5/16 120 10
3/8 210 17.5
7/16 340 28
1/2 —39
5/8 —74
3/4 —114
Size
Torque
Value
Nm
M2.5 0.4
M3 0.9
M4 1.5
M5 3.1
M6 5.3
M8 13.0
M10 27.0
M12 45.0
M14 71.1
M16 109
M18 157
M20 220
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