Tightening torques M
A
are given for screw plugs made of steel (St) with surface protected by a phos-
phate coating and oiled or galvanized.
Threads and mating faces beneath heads must be coated with engine oil prior to assembly.
An assembly tolerance of +10% of the figures in the table is permitted due to unavoidable deviations
during the tightening process.
Tightening torques for plug screws to DIN 908, DIN 910 and DIN 7604A (with short threaded end).
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
M56 x 2
380
360
M64 x 2
400
400
18 | General Information | M015590/06E 2014-03
TIM-ID: 0000002333 - 015
