MTU Detroit Diesel 183 Series Technical Publication page 30

Group 00
Subgroup 0003
Page 16
Tightening torques for screws and nuts with metric threads.
(Extract from MBN 10 130 "Tightening torques for screws and nuts with metric threads").
The table values apply to screws and nuts with head dimensions corresponding to DIN 912 (without consideration of
the torque scatter of the various tightening procedures).The tightening torques are for a coefficient range of:
0.08 - 0.14
Standard thread
Strength class
M5 x 0.8
M6 x 1
M7 x 1
M8 x 1.25
M10 x 1.5
M12 x 1.75
M14 x 2
M16 x 2
M18 x 2.5
M20 x 2.5
M22 x 2.5
M24 x 3
M27 x 3
M30 x 3.5
M33 x 3.5
20080/1 E 98-12
Socket head screw
8.8 10.9 Strength class
5 7 --
8 12 --
14 20 --
20 29 M8 x 1
39 57 M10 x 1
67 98 M12 x 1.5
110 155 M14 x 1.5
165 240 M16 x 1.5
235 335 M18 x 1.5
330 465 M20 x 1.5
440 630 M22 x 1.5
565 805 M24 x 2
820 1165 M27 x 2
1115 1590 M30 x 2
1510 2150 M33 x 2
Fine thread
8.8
--
--
--
21
42
69
115
170
255
350
470
595
860
1190
1595
General
=
10.9
--
--
--
31
61
101
165
250
360
495
665
850
1220
1690
2270