National Crane Published 5-27-2018 Control # 039-06 5-15
800D SERVICE
Table 5-5 Metric Series Screws of STAINLESS STEEL A2-70/A4-70 with Coarse Threads
Torque Values for fasteners with lubrication these torque values result in an 80% utilization of the yield strength.
Stainless steel fasteners tend to gall while being tightened.
To reduce this risk, lubricate the threads and torque at low
speeds without interruptions. Do not use excessive
pressure. Impact wrenches are not recommended.
Size Torque (Nm)
M2.5x0.45 0.4
M3x0.5 0.9
M4x0.7 1.5
M5x0.8 3.1
M6x1 5.3
M8x1.25 13
M10x1.5 27
Fo
r
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