Service manual

G420F(FE) Service Manual Chapter 1. General Information 10
Tightening Torque
Tightening Torque Table of Standard Parts
Torque (kg·m)
Bolt nominal
diameter(mm)
Pitch(mm)
Head mark 4 Head mark 7
M5 0.8 0.3 ~ 0.4 0.5 ~ 0.6
M6 1.0 0.5 ~ 0.6 0.9 ~ 1.1
M8 1.25 1.2 ~ 1.5 2.0 ~ 2.5
M10 1.25 2.5 ~ 3.0 4.0 ~ 5.0
M12 1.25 3.5 ~ 4.5 6 ~ 8
M14 1.2 7.5 ~ 8.5 12 ~ 14
M16 1.5 11 ~ 13 18 ~ 21
M18 1.5 16 ~ 18 26 ~ 30
M20 1.5 22 ~ 25 36 ~ 42
M22 1.5 29 ~ 33 48 ~ 55
M24 1.5 37 ~ 42 61 ~ 70
M5 0.8 0.3 ~ 0.4 0.5 ~ 0.6
M6 1.0 0.5 ~ 0.6 0.9 ~ 1.1
M8 1.25 1.2 ~ 1.5 2.0 ~ 2.5
M10 1.25 2.5 ~ 3.0 4.0 ~ 5.0
NOTE: The torques shown in the table are standard
vales under the following conditions.
1. Nuts and bolt are made of steel bar and
galvanized.
2. Galvanized plain steel washers are inserted.
3. All nuts, bolts, plain washers are dry.
NOTE: The torques shown in the table are not
applicable,
1. When spring washers, toothed washers and the
like are inserted.
2. If plastic parts are fastened.
3. If oil is applied to threads and surfaces.
NOTE: If you reduce the torques in the table to the
percentage indicated below under the following
conditions, it will be the standard value.
1. If spring washers are used : 85%
2. If threads and bearing surfaces are stained with
oil: 85%