Mitsubishi K21 - Page 10

TIGHTENING TORQUE Standard Bolt Tightening Torque
Upper: Lubricated (Antirust oil is applied to abrasive faces of
threads and seating faces)
Lower: No lubrication (Threads and seating faces are
completely degreased)
CAUTION:
• Except special nuts and bolts.
• The bolts applicable to this table have one of the following
marks embossed on their heads.
4T......4
7T......7
9T......9
Thread size
Unit 4T (Bolt) 7T (Bolt) 9T (Bolt)
Diameter Pitch
Hexagon head bolt and nut
M6 1
N·m 3.82 - 4.41 6.37 - 7.45 9.22 - 10.8
(kgf-m) (0.39 - 0.45) (0.65 - 0.76) (0.94 - 1.1)
N·m 5.00 - 6.47 8.43 - 10.8 11.8 - 15.7
(kgf-m) (0.51 - 0.66) (0.86 - 1.1) (1.2 - 1.6)
M8 1.25
N·m 9.32 - 10.8 15.7 - 17.7 22.6 - 25.5
(kgf-m) (0.95 - 1.1) (1.6 - 1.8) (2.3 - 2.6)
N·m 12.7 - 15.7 20.6 - 26.5 29.4 - 37.3
(kgf-m) (1.3 - 1.6) (2.1 - 2.7) (3.0 - 3.8)
M10
1.25
N·m 19.6 - 22.6 32.4 - 38.2 47.1 - 53.9
(kgf-m) (2.0 - 2.3) (3.3 - 3.9) (4.8 - 5.5)
N·m 25.5 - 33.3 43.1 - 54.9 61.8 - 78.5
(kgf-m) (2.6 - 3.4) (4.4 - 5.6) (6.3 - 8.0)
1.5
N·m 18.6 - 21.6 30.4 - 36.3 44.1 - 52
(kgf-m) (1.9 - 2.2) (3.1 - 3.7) (4.5 - 5.3)
N·m 24.5 - 31.4 41.2 - 52 58.8 - 74.5
(kgf-m) (2.5 - 3.2) (4.2 - 5.3) (6.0 - 7.6)
Flanged bolt
M6 1
N·m 4.9 - 5.69 8.14 - 9.51 11.8 - 13.7
(kgf-m) (0.5 - 0.58) (0.83 - 0.97) (1.2 - 1.4)
N·m 5.98 - 7.65 9.81 - 12.7 14.7 - 18.6
(kgf-m) (0.61 - 0.78) (1.0 - 1.3) (1.5 - 1.9)
M8 1.25
N·m 11.8 - 13.7 19.6 - 23.5 28.4 - 33.3
(kgf-m) (1.2 - 1.4) (2.0 - 2.4) (2.9 - 3.4)
N·m 14.7 - 18.6 24.5 - 31.4 35.3 - 45.1
(kgf-m) (1.5 - 1.9) (2.5 - 3.2) (3.6 - 4.6)
M10
1.25
N·m 24.5 - 29.4 41.2 - 48.1 59.8 - 69.6
(kgf-m) (2.5 - 3.0) (4.2 - 4.9) (6.1 - 7.1)
N·m 30.4 - 39.2 51.0 - 64.7 73.6 - 93.2
(kgf-m) (3.1 - 4.0) (5.2 - 6.6) (7.5 - 9.5)
1.5
N·m 23.5 - 27.5 39.2 - 46.1 56.9 - 65.7
(kgf-m) (2.4 - 2.8) (4.0 - 4.7) (5.8 - 6.7)
N·m 29.4 - 37.3 49.0 - 61.8 69.6 - 89.2
(kgf-m) (3.0 - 3.8) (5.0 - 6.3) (7.1 - 9.1)
GI-7
TIGHTENING TORQUE