Tightening torques for plug screws to MTN 5183-6
Thread
Screwed into
Steel/gray cast iron M
A
(Nm)
AI alloy M
A
(Nm)
M10 x 1
20
10 +2
M12 x 1.5
35
14 +2
M14 x 1.5
45
15 +3
M16 x 1.5
55
18 +3
M18 x 1.5
70
23 +3
M22 x 1.5
100
33 +4
M27 x 2
170
57 +5
M33 x 2
310
103 +10
M42 x 2
330
110 +11
M48 x 2
420
140 +14
M60 x 2
–
200 +20
M
A
= tightening torques
Assembly instructions and tightening torques for hose fittings with union nuts
These instructions do not apply to ORFS fittings. In contrast to the instructions for pipe unions, hose
fittings with sealing heads and the matching adapters must be fitted and connected as follows.
Hose fitting forming metallic seal with union nut: tighten union nut by hand then tighten a further
max. 1/4 of a turn with a wrench.
Hose fitting with O-ring and union nut: tighten union nut by hand then tighten a further max. 1/2 of a
turn with a wrench.
Hoses must be properly aligned before tightening the union nuts.
Sealing head/sealing cone with metric union nut
Metric thread
Pipe outer dia.
Torque (Nm)
M12 x 1.5
6
20
M14 x 1.5
8
38
28 | General Information | M015655/05E 2015-06
TIM-ID: 0000002333 - 017
