Metric Bolt Specifications - MacDon R113 Assembly Instruction Manual

Table 2.4 SAE Grade 8 Bolt and Grade 8 Free
Spinning Nut
Torque (ft·lbf)
Nominal
(*in·lbf)
Size (A)
Min.
1/4-20 *150
5/16-18 26
3/8-16 46
7/16-14 73
1/2-13 111
9/16-12 160
5/8-11 221
3/4-10 393
7/8-9 633
1-8 863
2.1.2 Metric Bolt Specifications
Table 2.5 Metric Class 8.8 Bolts and Class 9 Free
Spinning Nut
Torque (ft·lbf)
Nominal
(*in·lbf)
Size (A)
Min.
3-0.5 *13
3.5-0.6 *20
4-0.7 *29
5-0.8
*59
6-1.0 *101
8-1.25 20
10-1.5 40
12-1.75 70
14-2.0 113
16-2.0 175
20-2.5 341
24-3.0 589
169821
RECOMMENDED TORQUES
Torque (N·m)
Max. Min. Max.
*165 16.8 18.6
28 35
50 61
81 98 109
123 150 166
177 217 239
345 299 330
435 531 587
700 855 945
954 1165 1288
Torque (N·m)
Max. Min. Max.
*14 1.4
*22 2.2
*32 3.3
6.7
*66
*112 11.4 12.6
23 28
45 55
78 95 105
124 152 168
193 236 261
377 460 509
651 796 879
38
68
Figure 2.4: Bolt Grades
A - Nominal Size
C - SAE-5
1.6
2.5
3.7
7.4
30
Figure 2.5: Bolt Grades
60
7
B - SAE-8
D - SAE-2
Revision D