MacDon M1240 - Page 523

215916 503 Revision A
10013701001370
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Figure 8.4: Bolt Grades
Table 8.4 Metric Class 10.9 Bolts and Class 10 Distorted
Thread Nut
Nominal
Size (A)
Torque (Nm) Torque (lbf·ft) (*lbf·in)
Min.
Max.
Min.
Max.
3-0.5 1.3
1.5
*12 *13
3.5-0.6 2.1 2.3
*19 *21
4-0.7 3.1 3.4
*28 *31
5-0.8 6.3
7
*56 *62
6-1.0 10.7 11.8
*95 *105
8-1.25 26 29 19 21
10-1.5
51
57
38 42
12-1.75 90 99 66 73
14-2.0 143 158 106 117
16-2.0 222 246 165 182
20-2.5 434 480 322 356
24-3.0 750 829 556 614
8.1.2 Metric Bolt Specifications Bolting into Cast Aluminum
The torque values provided in the following metric bolt torque tables apply to hardware installed dry; that is, hardware
with no grease, oil, or threadlocker on the threads or heads. Do NOT grease or oil bolts or cap screws unless directed to do
so in this manual.
10013701001370
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Figure 8.5: Bolt Grades
Table 8.5 Metric Bolt Bolting into Cast Aluminum
Nominal
Size (A)
Bolt Torque
8.8
(Cast Aluminum)
10.9
(Cast Aluminum)
Nm
lbf·ft
Nm
lbf·ft
M3
–– –
1
M4
––
4
2.6
M5
––
8
5.5
M6 9 6 12 9
M8 20
14
28 20
M10 40 28
55
40
M12 70 52 100 73
M14
–– – –
M16
–– – –
REFERENCE