Tightening Torques For Threaded Connections - Hatz 2-4L30 Workshop Manual

Tightening torques for threaded connections

General requirements in Nm:
Nm ÷ 9.81(10) = kpm
Nm ÷ 1.3558 = lb ft
Thread
5.8
M 4 1.7
M 5 3.4
M 6 6.0
M 8 14
M 10 29
M 12 50
M 14 80
M 16 120
M 18 170
M 20 240
M 22 320
4
L / M . . / 07.96
Screw strength rating
8.8 10.9
2.8 3.9
5.5 7.8
9.5
23
46
80 110
130 180
190 270
270 380
380 530
510 720
12.9
4.7
9.3
13 16
33 39
65 78
140
220
330
450
640
860