97
ASSEMBLY INSTRUCTIONS
TIGHTENING TORQUE
B
Bolts and Nuts
If the torque levels are specified in the text, follow that specification.
American standard screws,
bolts and nuts with UNC or UNF threads
Metric cap screws
SAE grade No.
SAE GR.5
SAE GR.8
property class
8.8 Approx. SAE GR 5
1/4
(N-m)
(kgf-m)
(ft-lbs)
11.7 to 15.8
1.19 to 1.61
8.6 to 11.6
16.3 to 19.8
1.66 to 2.02
12.0 to 14.6
M6
(N-m)
(kgf-m)
(ft-lbs)
9.8 to 11.2
1.0 to 1.1
7.2 to 8.3
5/16
(N-m)
(kgf-m)
(ft-lbs)
23.1 to 27.8
2.35 to 2.83
17.0 to 20.5
32.5 to 39.3
3.31 to 4.01
24.0 to 29.0
M8
(N-m)
(kgf-m)
(ft-lbs)
23.6 to 27.4
2.4 to 2.8
17.4 to 20.2
3/8
(N-m)
(kgf-m)
(ft-lbs)
47.5 to 57.0
4.84 to 5.81
35.0 to 42.0
61.0 to 73.2
6.22 to 7.46
45.0 to 54.0
M10
(N-m)
(kgf-m)
(ft-lbs)
48.1 to 55.8
4.9 to 5.7
35.5 to 41.2
1/2
(N-m)
(kgf-m)
(ft-lbs)
108.5 to 130.2
11.06 to 13.28
80.0 to 96.0
149.2 to 179.0
15.21 to 18.25
110.0 to 132.0
M12
(N-m)
(kgf-m)
(ft-lbs)
77.5 to 90.1
7.9 to 9.2
57.2 to 66.5
9/16
(N-m)
(kgf-m)
(ft-lbs)
149.2 to 179.0
15.21 to 18.25
110.0 to 132.0
217.0 to 260.4
22.13 to 26.55
160.0 to 192.0
M14
(N-m)
(kgf-m)
(ft-lbs)
124 to 147
12.6 to 15.0
91.5 to 108.4
5/8
(N-m)
(kgf-m)
(ft-lbs)
203.4 to 244.1
20.74 to 24.89
150.0 to 180.0
298.3 to 358.0
30.42 to 36.51
220.0 to 264.0
M16
(N-m)
(kgf-m)
(ft-lbs)
196 to 225
20.0 to 23.0
145 to 166