Tightening torques for screws and bolts

The tightening torques defined in DIN EN ISO 4014 for bolts with washer faces have to be applied.

Dimension

Tightening torque [Nm]

Quality 8.8, friction coefficient µtot= 0.125

M 4 2,8

M 5

5,5

M 6 9,6
M 8 23
M 10 46
M 12 79
M 14 125
M 16 195
M 18 280
M 20 395
M 22 540
M 24 680
M 27 1000
M 30 1350