Komatsu 82E Series - Standard Bolt and Nut Tightening Torques

82E-5 – 98E-5 SERIES 13-3
13. TIGHTENING TORQUE FOR BOLTS AND NUTS
13.2 Tightening Torques for Standard Bolts and Nuts
Note) Lubricating oil is not applied to threaded portion and seat surface.
Item
Nominal thread
diameter x pitch
Tightening torque
Nm {kgm}
Remarks
Hexagon bolt (7T)
and nut
M6 x 1
9.8 – 11.8
{1.0 – 1.2}
Use 80% of the value at left when the tight-
ening part is aluminum. Use 60% of the
value at left for 4T bolts and lock nuts.
M8 x 1.25
22.6 – 28.4
{2.3 – 2.9}
M10 x 1.5
44.1 – 53.9
{4.5 – 5.5}
M12 x 1.75
78.4 – 98.0
{8.0 – 10}
M14 x 1.5
127.5 – 147.1
{13 – 15}
M16 x 1.5
215.7 – 235.4
{22 – 24}
PT plug
1/8
9.8
{1.0}
—
1/4
19.6
{2.0}
3/8
29.4
{3.0}
1/2
58.8
{6.0}
Pipe joint bolt
M8
12.7 – 16.7
{1.3 – 1.7}
—
M10
19.6 – 25.4
{2.0 – 2.6}
M12
24.5 – 34.3
{2.5 – 3.5}
M14
39.2 – 49.0
{4.0 – 5.0}
M16
49.0 – 58.8
{5.0 – 6.0}