Tightening torques M
A
are given for plug screws made of steel (St) with surface protected by a phos-
phate coating and oiled or galvanized.
Coat thread and mating faces beneath heads with engine oil prior to assembly.
An assembly tolerance of +10% of the table values is admissible for unavoidable deviations during the
tightening process.
Tightening torques for plug screws DIN 908, DIN 910 and DIN 7604A (with short screwed plug).
Thread
inserted in
Steel/gray cast iron M
A
(Nm)
Al 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
M56 x 2
380
360
M64 x 2
400
400
18 | General Information | MS150119/00E 2014-08
TIM-ID: 0000002333 - 016
