11 Appendix
Tightening torque values for screws
44
When tightening screws, adhere to the following tightening torque
values based on VDI 2230 Oct. 2001.
Hex. screw Hex. screw Hex. screw Hex. lock
Standard
DIN EN
screw
ISO 4014 /
4017
Standard
EN ISO
nut
4032
Strength
8.8
category
M5 [Nm]
8
M6 [Nm]
10
M8 [Nm]
25
M10 [Nm]
49
M12 [Nm]
85
M16 [Nm]
210
M20 [Nm]
425
M24 [Nm]
730
Appendix
DIN EN
DIN EN
ISO 4014 /
ISO 4014 /
4017
4017
EN ISO
EN ISO
4032
4032
10.9
A70
-
5.1
-
9
36
22
72
44
125
74
310
183
610
370
1050
608
nut
EN ISO
4032
8.8
-
-
25
49
85
210
425
730