8 Reference information
8.4. Screw joints
3HAC023082-001 Revision: E434
© Copyright 2004-2008 ABB. All rights reserved.
The table below specifies the recommended standard tightening torque for oil-lubricated
screws with Allen head screws.
The table below specifies the recommended standard tightening torque for Molycote-
lubricated screws with Allen head screws.
The table below specifies the recommended standard tightening torque for water and air
connectors when one or both connectors are made of brass.
Dimension
Tightening torque
(Nm)
Class 8.8, oil-lubri-
cated
Tightening torque
(Nm)
Class 10.9, oil-lubri-
cated
Tightening torque
(Nm)
Class 12.9, oil-lubri-
cated
M5 6 - -
M6 10 - -
M8 24 34 40
M10 47 67 80
M12 82 115 140
M16 200 290 340
M24 725 960 1150
Dimension
Tightening torque (Nm)
Class 10.9, Molycote-lubricated
Tightening torque (Nm)
Class 12.9, Molycote-lubricated
M8 28 34
M10 55 66
M12 96 115
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
Continued
To Next Page
Loading...
