MacDon R113 Assembly Instruction Manual page 12

Table 2.2 SAE Grade 5 Bolt and Grade F Distorted
Thread Nut
Torque (ft·lbf)
Nominal
(*in·lbf)
Size (A)
Min.
1/4-20 *72
5/16-18 *149
3/8-16 22
7/16-14 35
1/2-13 54
9/16-12 77
5/8-11 107
3/4-10 192
7/8-9 306
1-8 459
Table 2.3 SAE Grade 8 Bolt and Grade G Distorted
Thread Nut
Torque (ft·lbf)
Nominal
(*in·lbf)
Size (A)
Min.
1/4-20 *150
5/16-18 18
3/8-16 31
7/16-14 50
1/2-13 76
109
9/16-12
151
5/8-11
3/4-10 268
7/8-9 432
1-8 647
169821
RECOMMENDED TORQUES
Torque (N·m)
Max. Min. Max.
*80 8.1
*164 16.7 18.5
24 30
39 48
59 73
86 105 116
118 144 160
212 259 286
338 413 456
507 619 684
Torque (N·m)
Max. Min. Max.
16.8 18.6
*165
19 24
34 42
55 67
84 102 113
121 148 163
167 204 225
296 362 400
477 583 644
716 874 966
9
33
53
80
Figure 2.2: Bolt Grades
A - Nominal Size
C - SAE-5
26
46
74
Figure 2.3: Bolt Grades
A - Nominal Size
C - SAE-5
6
B - SAE-8
D - SAE-2
B - SAE-8
D - SAE-2
Revision D