AIR10-1420A Operation Manual
Appendix B table of screw strength and tightening torque (nm)
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Appendix B table of screw strength and tightening torque (nm)
Table B strength and tightening torque of screws
Performance grade
Thread specification
Level 8.8
Level 10.9
Level 12.9
M3
1.2
1.6
2.0
M4
2.8
3.7
4.4
M5
5.6
7.5
9
M6
9.5
12.5
15
M8
23
31
36
M10
45
60
70
M12
78
104
125
M14
113
165
195
M16
195
250
305
M20
370
500
600
Prompt
◼
All screws must be tightened with proper torque
◼
In addition to the torque specified in the text, the corresponding
tightening torque shall be selected according to the screw performance
level
◼
Remove foreign matters from screws and threaded holes
◼
Torque applies to lightly lubricated screws
◼
Screws shall be tightened evenly and symmetrically
◼
According to the installation requirements of the reducer and other
moving parts, apply thread glue to the engagement part of some
screws.
。