Tightening Torques For General Use Screws, Bolts And Nut - Kubota GL6000 Workshop Manual

GL6000, GL7000, GL9000, GL11000, WSM
[2] TIGHTENING TORQUES FOR GENERAL USE SCREWS, BOLTS AND
NUT
When the tightening torques are not specified, tighten the screws, bolts and nuts according to the table below.
Grade
Nominal Unit
Diameter
M4 1.0 to 2.9
M5 1.9 to 3.6
M6 7.9 to 9.3
M8 17.7 to 20.6
M10 39.2 to 45.1
M12 62.8 to 72.6
Screw and bolt material grades are shown by numbers punched on the screw and bolt heads. Prior to
tightening, be sure to check out the numbers as shown below.
Punched number
None or 4
7 Special screw and bolt S43C, S48C (Refined)
Standard Screw and Bolt
N·m kgf·m
0.1 to 0.3
0.2 to 0.4
0.80 to 0.95
1.8 to 2.1
4.0 to 4.6
6.4 to 7.4
Screw and bolt material grade
Standard screw and bolt SS41, S20C
lbf·ft N·m
0.7 to 2.1 –
1.4 to 2.7 –
5.8 to 6.9 9.8 to 11.3
13.0 to 15.2 23.5 to 27.5
28.9 to 33.3 48.1 to 55.9
46.3 to 53.5 77.5 to 90.2
2-S9
GENERATOR
Special Screw and Bolt
kgf·m
–
–
1.00 to 1.15 7.23 to 8.32
2.4 to 2.8 17.4 to 20.3
4.9 to 5.7 35.4 to 41.2
7.9 to 9.2 57.1 to 66.5
KiSC issued 05, 2015 A
lbf·ft
–
–
W10371750
W1012705