MacDon R113 - Metric Bolt Specifications

215585 186 Revision A
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Figure 10.8: Bolt Grades
A - Nominal Size B - SAE-8
C - SAE-5 D - SAE-2
Table 10.5 SAE Grade 8 Bolt and Grade 8 Free Spinning Nut
Nominal
Size (A)
Torque (Nm) Torque (lbf·ft) (*lbf·in)
Min.
Max.
Min.
Max.
1/4-20
16.8 18.6
*150 *165
5/16-18
35 38 26 28
3/8-16
61 68 46 50
7/16-14
98 109 73 81
1/2-13
150 166
111
123
9/16-12
217 239 160
177
5/8-11
299 330 221 345
3/4-10
531 587 393 435
7/8-9
855 945 633 700
1-8 1165 1288 863 954
10.4.2 Metric Bolt Specifications
Torque values shown in following tables are valid for non-greased, or non-oiled threads and heads; therefore, do NOT
grease or oil bolts or cap screws unless otherwise specified in this manual.
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Figure 10.9: Bolt Grades
Table 10.6 Metric Class 8.8 Bolts and Class 9 Free Spinning Nut
Nominal
Size (A)
Torque (Nm)
Torque (lbf·ft) (*lbf·in)
Min.
Max.
Min.
Max.
3-0.5
1.4
1.6
*13 *14
3.5-0.6 2.2 2.5
*20 *22
4-0.7 3.3 3.7
*29 *32
5-0.8 6.7
7.4
*59 *66
6-1.0
11.4
12.6
*101 *112
8-1.25 28 30 20 23
10-1.5
55
60 40
45
12-1.75 95 105 70 78
14-2.0 152 168 113 124
16-2.0 236 261
175
193
20-2.5 460 509 341 377
24-3.0 796 879 589 651
REFERENCE