Table 8.2 Metric Class 8.8 Bolts and Class 9 Distorted
Thread Nut
Torque (ft·lbf)
(*in·lbf)
Torque (N·m)
Nominal
Size (A)
Min.
Max.
Min.
Max.
3-0.5
*9
*10
1
1.1
3.5-0.6
*14
*15
1.5
1.7
4-0.7
*20
*22
2.3
2.5
5-0.8
*40
*45
4.5
5
6-1.0
*69
*76
7.7
8.6
8-1.25
*167
*185
18.8
20.8
10-1.5
28
30
37
41
12-1.75
48
53
65
72
14-2.0
77
85
104
115
16-2.0
119
132
161
178
20-2.5
233
257
314
347
24-3.0
402
444
543
600
Figure 8.2: Bolt Grades
Table 8.3 Metric Class 10.9 Bolts and Class 10 Free
Spinning Nut
Torque (ft·lbf)
(*in·lbf)
Torque (N·m)
Nominal
Size (A)
Min.
Max.
Min.
Max.
3-0.5
*18
*19
1.8
2
3.5-0.6
*27
*30
2.8
3.1
4-0.7
*41
*45
4.2
4.6
5-0.8
*82
*91
8.4
9.3
6-1.0
*140
*154
14.3
15.8
8-1.25
28
31
38
42
10-1.5
56
62
75
83
12-1.75
97
108
132
145
14-2.0
156
172
210
232
16-2.0
242
267
326
360
20-2.5
472
521
637
704
24-3.0
815
901
1101
1217
Figure 8.3: Bolt Grades
214017
86
Revision A