MacDon M155 - Page 472

REFERENCE
Table8.6MetricClass8.8BoltsandClass9Distorted
Thread Nu t
Torque (ft·lb
f)
(*in·lbf)
Torque (N·m)
Nominal
Size (A)
Min. Max. Min. Max.
3-0.5
*9 *10
11.1
3.5-0.6
*14 *15
1.5 1.7
4-0.7
*20 *22
2.3 2.5
5-0.8
*40 *45
4.5
5
6-1.0
*69 *76
7.7
8.6
8-1.25
*167 *185
18.8 20.8
10-1.5 28 30 37 41
12-1.7548536572
14-2.0
77
85 104 115
16-2.0 119 132 161 178
20-2.5 233 257 314 347
24-3.0 402 444 543 600
Figure 8.6: Bolt Grades
Tab le 8.7 Metric Class 10.9 Bolts an d Class 10 Free
Spinning Nut
Torque (ft·l
bf)
(*in·lbf)
Torque (N·m)
Nominal
Size (A)
Min. Max. Min. Max.
3-0.5
*18 *19
1.8 2
3.5-0.6
*27 *30
2.8 3.1
4-0.7
*41 *45
4.2 4.6
5-0.8
*82 *91
8.4 9.3
6-1.0
*140 *154
14.3 15.8
8-1.25 28 31 38 42
10-1.5 56 62
75
83
12-1.75 97 108 132 145
14-2.0 156 172 210 232
16-2.0 242 267 326 360
20-2.5 472 521 637 704
24-3.
0
815 901 1101 1217
Figure 8.7: Bolt Grades
147649 456 Revision A