Instruction Manual

MAINTENANCE AND SERVICING
Table 6.4 SAE Grade 8 Bolt and Grade 8 Free
Spinning Nut
Torque (ft·lb
f)
(*in·lbf)
Torque (N·m)
Nominal
Size (A)
Min. Max. Min. Max.
1/4-20 *150 *165
16.8 18.6
5/16-18
26 28 35 38
3/8-16
46 50 61 68
7/16-14
73 81 98 109
1/2-13
111 123 150 166
9/16-12
160 177 217 239
5/8-11
221 345 299 330
3/4-10
393 435 531 587
7/8-9
633 700 855 945
1-8 863 954 1165 1288
Figure 6.4: Bolt Grades
A-NominalSize B-SAE-8
C - SAE-5 D - SAE-2
Metric Bolt Speci fications
Table6.5MetricClass8.8BoltsandClass9Free
Spinning Nut
Torque (ft·lbf)
(*in·lbf)
Torque (N·m)
Nominal
Size (A)
Min. Max. Min. Max.
3-0.5
*13 *14
1.4 1.6
3.5-0.6
*20 *22
2.2 2.5
4-0.7
*29 *32
3.3 3.7
5-0.8
*59 *66
6.7 7.4
6-1.0
*101 *112
11.4 12.6
8-1.25 20 23 28 30
10-1.5 40 45
55
60
12-1.75 70 78 95 105
14-2.0 113 124 152 168
16-2.
0
175 193 236 261
20-2.5 341 377 460 509
24-3.0 589 651 796 879
Figure 6.
5: Bolt Grades
169899
1
17
Revision A