7 Reference information
7.3. Screw joints
263
3HAC027151-001 Revision: B
©
Co
py
rig
h
t 200
6-
200
8 ABB. All righ
ts reser
v
ed.
The table below specifies the recommended standard tightening torque for
water and air
connectors
when
one
or
both
connectors are made of
brass
.
M16
235
280
M24
790
950
Dimension
Tightening torque
Nm - Nominal
Tightening torque
Nm - Min.
Tightening torque
Nm - Max.
1/8
12
8
15
1/4
15
10
20
3/8
20
15
25
1/2
40
30
50
3/4
70
55
90
Dimension
Tightening torque (Nm)
Class 10.9, Molycote-lubricated
Tightening torque (Nm)
Class 12.9, Molycote-lubricated
Continued