Tightening torques for male unions to MTN 5183-3 standard
This standard applies to male unions to DIN 2353 Series L with threaded end to DIN 3852 Form A
(sealed by sealing ring to DIN 7603-Cu).
Tightening torques M
A
are given for male unions made of steel (St) with phosphatized surface 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.
Thread
Screwed into steel/gray cast iron M
A
(Nm)
M10 x 1
15
M12 x 1.5
20
M14 x 1.5
35
M16 x 1.5
50
M18 x 1.5
60
M22 x 1.5
70
M26 x 1.5
100
M32 x 2
160
M42 x 2
260
M48 x 2
320
M
A
= tightening torques
22 | General Information | MS150063/02E 2014-03
TIM-ID: 0000002333 - 015
