ABB IRB 6640 Product Manual page 409

The table below specifies the recommended standard tightening torque for Molycote-
lubricated screws with Allen head screws.
Dimension
M8
M10
M12
M16
M20
M24
The table below specifies the recommended standard tightening torque for water and air
connectors when one or both connectors are made of brass.
Dimension
1/8
1/4
3/8
1/2
3/4
3HAC026876-001 Revision: F
Tightening torque (Nm)
Class 10.9, Molycote-lubricated
28
55
96
235
790
Tightening torque
Nm - Nominal
12
15
20
40
70
7 Reference information
Tightening torque (Nm)
Class 12.9, Molycote-lubricated
35
70
120
280
550
950
Tightening torque
Nm - Min.
8
10
15
30
55
7.4. Screw joints
Continued
Tightening torque
Nm - Max.
15
20
25
50
90
407