Maintenance
0352−2/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
1/ 2
1. Standard screws
This table is valid for all screws that are not considered in 0352−1.
It is recommended to lubricate the threads for screws which come into contact with
hot parts like exhaust pipings, expansion pieces, etc. with a heat-resisting lubri-
cant, e.g. THREAD GARD.
Attention! These tightening instructions are valid only if:
− screws are made of the 8.8 material
− threads have been lubricated with oil
Standard thread Fine thread Tightening torque [Nm]
M8 M8 x 1 20
M10 M10 x 1.25 40
M12 M12 x 1.25 70
M14 M14 x 1.5 110
M16 M16 x 1.5 170
M18 M18 x 1.5 250
M20 M20 x 1.5 350
M22 M22 x 1.5 450
M24 M24 x 2 600
M27 M27 x 2 900
M30 M30 x 2 1200
M33 M33 x 2 1600
M36 M36 x 3 2100
M39 M39 x 3 2500
M42 M42 x 3 2900
M45 M45 x 3 3300
M48 M48 x 3 3700
M52 M52 x 3 4100
M56 M56 x 4 4600
M60 M60 x 4 5200
ightening Values of Standard Screwed Connections
2010
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