Tightening torques for male connectors as per MTN standard 5183-3
This standard applies to male connectors DIN 2353, L series, with screwed plug DIN 3852, model A
(sealed by sealing ring DIN 7603-Cu).
Tightening torques M
A
are given for male connectors made of steel (St) with surface protected by a phos‐
phate coating and oiled or galvanized.
Thread and mating faces beneath heads must be coated with 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.
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 | MS150061/04E 2012-07
TIM-ID: 0000002333 - 010
