Table 8.6 Metric Class 8.8 Bolts and Class 9 Distorted
Thread Nut
Torque (Nm)
Torque (lbf·ft)
(*lbf·in)
Nominal
Size (A)
Min.
Max.
Min.
Max.
3-0.5
1
1.1
*9
*10
3.5-0.6
1.5
1.7
*14
*15
4-0.7
2.3
2.5
*20
*22
5-0.8
4.5
5
*40
*45
6-1.0
7.7
8.6
*69
*76
8-1.25
18.8
20.8
*167
*185
10-1.5
37
41
28
30
12-1.75
65
72
48
53
14-2.0
104
115
77
85
16-2.0
161
178
119
132
20-2.5
314
347
233
257
24-3.0
543
600
402
444
Figure 8.6: Bolt Grades
Table 8.7 Metric Class 10.9 Bolts and Class 10 Free
Spinning Nut
Torque (Nm)
Torque (lbf·ft)
(*lbf·in)
Nominal
Size (A)
Min.
Max.
Min.
Max.
3-0.5
1.8
2
*18
*19
3.5-0.6
2.8
3.1
*27
*30
4-0.7
4.2
4.6
*41
*45
5-0.8
8.4
9.3
*82
*91
6-1.0
14.3
15.8
*140
*154
8-1.25
38
42
28
31
10-1.5
75
83
56
62
12-1.75
132
145
97
108
14-2.0
210
232
156
172
16-2.0
326
360
242
267
20-2.5
637
704
472
521
24-3.0
1101
1217
815
901
Figure 8.7: Bolt Grades
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Revision A
