Tightening torques M
A
are given for plug screws made of steel (St) with phosphatized surface-protection
and oiled or galvanized. Thread and mating faces beneath heads must be coated in engine oil prior to
assembly. When tightening manually (defined tightening), an assembly tolerance of +10 % of the table
values is permitted for unavoidable deviations of the tightening torque from the table value during the
tightening process – e.g. resulting from inaccurate readings and overtightening during assembly.
Tightening torques for plug screws DIN 908, DIN 910 and DIN 7604A (with short screwed plug).
Thread
Screwed into
Steel/gray cast iron M
A
(Nm)
AI alloy M
A
(Nm)
M10 x 1
15
15
M12 x 1.5
30
25
M14 x 1.5
35
30
M16 x 1.5
40
35
M18 x 1.5
50
40
M20 x 1.5
60
50
M22 x 1.5
70
70
M24 x 1.5
85
80
M26 x 1.5
100
100
M27 x 2
100
100
M30 x 1.5
110
110
M30 x 2
120
120
M33 x 2
160
160
M36 x 1.5
190
180
M38 x 1.5
220
200
M42 x 1.5
260
240
M45 x 1.5
290
270
M48 x 1.5
310
*300
M52 x 1.5
325
320
MS150061/04E 2012-07 | General Information | 19
TIM-ID: 0000002333 - 010
