Winterthur Gas X40-B, Maintenance Manual

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Maintenance
0352 − 2/A1
Winterthur Gas & Diesel Ltd.
1/ 3
Torque Values − Standard Screws and Elastic Studs
1. Torque Values − Standard Screws
It is recommended that the torque values given in the table below are for aII standard
metric screws of grade 8.8. This applies to all threaded connections not shown in
0352 − 1 . The threads and base of the head must be lubricated with oil SAE 30.
For the screws in high temperature areas (exhaust pipes, expansion pieces etc), a
lubricant resistant to heat (e.g. NEVER SEEZ NSBT8) is recommended.
If NEVER SEEZ NSBT8 is used, the torque value must be decreased by 20% of the
values given in the table.
These torques values do not apply to turbocharger installations. Refer to the
documents of the turbocharger manufacturer for the correct torque values.
Standard thread
Grade 8.8
Fine thread
Grade 8.8
Torque Value
[Nm]
M3 M3 x 0.35 0.9
M4 M4 x 0.5 2.1
M5 M5 x 0.5 4.2
M6 M6 x 0.75 7.2
M8 M8 x 1 18
M10 M10 x 1.25 35
M12 M12 x 1.25 60
M14 M14 x 1.5 94
M16 M16 x 1.5 145
M18 M18 x 1.5 200
M20 M20 x 1.5 280
M22 M22 x 1.5 380
M24 M24 x 2 490
M27 M27 x 2 720
M30 M30 x 2 980
M33 M33 x 2 1300
M36 M36 x 3 1700
M39 M39 x 3 2200
M42 M42 x 3 2700
M45 M45 x 3 3400
M48 M48 x 3 4100
M52 M52 x 3 5300
M56 M56 x 4 6600
M60 M60 x 4 8100
2016