Table of Contents
Advertisement
7.2
BOLT TORQUE
CHECKING BOLT TORQUE
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. Check tightness of bolts periodically, using bolt
torque chart as a guide. Replace hardware with the same strength bolt.
ENGLISH TORQUE SPECIFICATIONS
Bolt
Diameter
SAE 2
(N.m) (lb-ft)
"A"
1/4"
8
5/16"
13
10
3/8"
27
20
7/16"
41
30
1/2"
61
45
9/16"
95
60
5/8"
128
95
3/4"
225
165
7/8"
230
170
1"
345
225
METRIC TORQUE SPECIFICATIONS
Bolt Torque*
Bolt
Diameter
8.8
"A"
(N.m)
(lb-ft)
M3
.5
M4
3
6
M5
M6
10
M8
25
50
M10
90
M12
M14
140
M16
225
435
M20
M24
750
M30
1495
2600
M36
Torque figures indicated above are valid for non-greased or non-oiled threads and heads unless otherwise
specified. Therefore, do not grease or oil bolts or capscrews unless otherwise specified in this manual.
When using locking elements, increase torque values by 5%.
* Torque value for bolts and capscrews are identified by their head markings.
Bolt Torque*
SAE 5
(N.m) (lb-ft)
(N.m) (lb-ft)
12
6
9
17
25
19
36
45
63
33
72
53
100
110
80
155
155
115
220
215
160
305
390
290
540
570
420
880
850
630
1320
10.9
(N.m)
(lb-ft)
.4
1.8
1.3
2.2
4.5
3.3
4
9
7
7
15
11
18
35
26
37
70
52
66
125
92
103
200
148
166
310
229
321
610
450
553
1050
774
1103
2100
1550
1917
3675
2710
SAE 8
12
27
45
75
115
165
220
400
650
970
SAE-2
SAE-5
A
A
10.9
8.8
SAE-8
51
Advertisement
Chapters
Table of Contents
