Table 8.2 SAE Grade 5 Bolt and Grade F Distorted
Thread Nut
Torque (Nm)
Torque (lbf·ft)
(*lbf·in)
Nominal
Size (A)
Min.
Max.
Min.
Max.
1/4-20
8.1
9
*72
*80
5/16-18
16.7
18.5
*149
*164
3/8-16
30
33
22
24
7/16-14
48
53
35
39
1/2-13
73
80
54
59
9/16-12
105
116
77
86
5/8-11
144
160
107
118
3/4-10
259
286
192
212
7/8-9
413
456
306
338
1-8
619
684
459
507
Figure 8.2: Bolt Grades
A - Nominal Size
B - SAE-8
C - SAE-5
D - SAE-2
Table 8.3 SAE Grade 8 Bolt and Grade G Distorted
Thread Nut
Torque (Nm)
Torque (lbf·ft)
(*lbf·in)
Nominal
Size (A)
Min.
Max.
Min.
Max.
1/4-20
16.8
18.6
*150
*165
5/16-18
24
26
18
19
3/8-16
42
46
31
34
7/16-14
67
74
50
55
1/2-13
102
113
76
84
9/16-12
148
163
109
121
5/8-11
204
225
151
167
3/4-10
362
400
268
296
7/8-9
583
644
432
477
1-8
874
966
647
716
Figure 8.3: Bolt Grades
A - Nominal Size
B - SAE-8
C - SAE-5
D - SAE-2
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Revision A
