MacDon FD75 OM - Manual (Page 261)

MAINTENANCE AND SERVICING
Metric Bolt Specifications
Table 6.5 Metric Class 8.8 Bolts and Class 9 Free
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
Table 6.6 Metric Class 8.8 Bolts and Class 9 Distorted
Thread Nut
Torque (ft·lbf)
(*in·lbf)
Torque (N·m)
Nominal
Size (A)
Min. Max. Min. Max.
3-0.5 *9 *10 1 1.1
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
12-1.75 48 53 65 72
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 6.6: Bolt Grades
169894 247 Revision A