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7.4 RECOMMENDED TORQUES
7.4.1
Bolts
The tables shown below give correct torque
values for various bolts and capscrews.
•
Tighten all bolts to the torques specified in chart
unless otherwise noted throughout this manual
•
Check tightness of bolts periodically, using bolt
torque chart as a guide.
•
Replace hardware with the same strength bolt.
•
Torque figures are valid for non-greased or non-
oiled threads and heads unless otherwise
specified. Do not grease or oil bolts or capscrews
unless specified in this manual. When using
locking elements, increase torque values by 5%.
7.4.1.1
SAE Bolts
NC BOLT TORQUE*
BOLT
SAE 5
DIA.
"A"
lbf-ft
1/4"
9
5/16"
18
3/8"
32
7/16"
50
1/2"
75
9/16"
110
5/8"
150
265
3/4"
7/8"
420
1"
640
* Torque categories for bolts and capscrews are
identified by their head markings.
Form # 169017
MAINTENANCE/SERVICE
SAE 8
N·m
lbf-ft
N·m
12
11
15
24
25
34
43
41
56
68
70
95
102
105
142
149
149
202
203
200
271
359
365
495
569
600
813
867
890
1205
SAE-5
SAE-8
7.4.1.2
Metric Bolts
BOLT
DIA.
"A"
M3
M4
M5
M6
M8
M10
M12
M14
M16
M20
M24
M30
M36
* Torque categories for bolts and capscrews are
identified by their head markings.
108
NC BOLT TORQUE*
8.8
10.9
lbf-ft
N·m
lbf-ft
0.4
0.5
1.3
2.2
3
3.3
4
6
7
7
10
11
18
25
26
37
50
52
66
90
92
103
140
148
166
225
229
321
435
450
553
750
774
1103
1495
1550
1917
2600
2710
Issue – June 2008
N·m
1.8
4.5
9
15
35
70
125
200
310
610
1050
2100
3675
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