MacDon M Series Unloading And Assembly Instructions page 372

Table 6.2 SAE Grade 5 Bolt and Grade F Distorted
Thread Nut
Torque (N·m)
Nominal
Size (A)
Min.
1/4-20 8.1
5/16-18 16.7
3/8-16 30
7/16-14 48
1/2-13 73
9/16-12 105
5/8-11 144
3/4-10 259
7/8-9 413
1-8 619
Table 6.3 SAE Grade 8 Bolt and Grade G Distorted
Thread Nut
Torque (N·m)
Nominal
Size (A)
Min.
1/4-20 16.8
5/16-18 24
3/8-16 42
67
7/16-14
1/2-13 102
9/16-12 148
5/8-11 204
3/4-10 362
7/8-9 583
1-8 874
147962
REFERENCE
Torque (ft·lbf)
(*in·lbf)
Max. Min. Max.
9 *72 *80
18.5 *149 *164
33 22
53 35
80 54
77
116
160 107 118
286 192 212
456 306 338
684 459 507
Torque (ft·lbf)
(*in·lbf)
Max. Min. Max.
18.6 *150 *165
26 18
46 31
74 50
113 76
163 109 121
225 151 167
400 268 296
644 432 477
966 647 716
24
39
59
86
Figure 6.2: Bolt Grades
A - Nominal Size
C - SAE-5
19
34
55
84
Figure 6.3: Bolt Grades
A - Nominal Size
C - SAE-5
358
B - SAE-8
D - SAE-2
B - SAE-8
D - SAE-2
Revision A