FOREWORD
STANDARD TIGHTENING TORQUE
WA470-6, WA480-6
00-31
b
12
STANDARD TIGHTENING TORQUE
00
STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS
00
The following charts give the standard tightening torques of bolts and nuts. Exceptions are given in DISASSEMBLY AND
ASSEMBLY.
Thread diameter of bolt
Width across flats
mm
mm
N•m
lbf ft
6
10
11.8 - 14.7
8.70 - 10.84
8
13
27 - 34
19.91 - 25.07
10
17
59 - 74
43.51 - 54.57
12
19
98 - 123
72.28 - 90.72
14
22
153 - 190
112.84 - 140.13
16
24
235 - 285
173.32 - 210.20
18
27
320 - 400
236.02 - 295.02
20
30
455 - 565
335.59 - 416.72
22
32
610 - 765
449.91 - 564.23
24
36
785 - 980
578.98 - 722.81
27
41
1150 - 1440
848.19 - 1062.09
30
46
1520 - 1910
1121.09 - 1408.74
33
50
1960 - 2450
1445.62 - 1807.02
36
55
2450 - 3040
1807.02 - 2242.19
39
60
2890 - 3630
2131.55 - 2677.35
Thread diameter of bolt
Width across flats
mm
mm
N•m
lbf ft
6
10
5.9 - 9.8
4.35 - 7.22
8
13
13.7 - 23.5
10.10 - 17.33
10
14
34.3 - 46.1
25.29 - 34.00
12
27
74.5 - 90.2
54.94 - 66.52