Metric bolt specifications – MacDon FD75 OM User Manual
Page 261
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
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Revision A