Jay-Lor 5425TM - Bolt Torque; Figure 15 - Metric Bolt Specifications; Figure 14 - Imperial Bolt Specifications

AAA-055-00188
Jaylor Owner Manual -41- 5000 Series Truck Mount Models
Bolt Torque
The tables shown below give correct torque values for various bolts and cap screws. Tighten all bolts to
the torque specified in the chart unless otherwise noted. Check tightness of bolts periodically, using the
bolt torque chart as a guide. Replace hardware with the same strength bolt.
Bolt
Diameter
“A”
Bolt Torque*
SAE 2
SAE 5
SAE 8
(N.m.)
(lb.-ft.)
(N.m.)
(lb.-ft.)
(N.m.)
(lb.-ft.)
1/4”
8
6
12
9
17
12
5/16”
13
10
25
19
36
27
3/8”
27
20
45
33
63
45
7/16”
41
30
72
53
100
75
1/2”
61
45
110
80
155
115
9/16”
95
60
155
115
220
165
5/8”
128
95
215
160
305
220
3/4”
225
165
390
290
540
400
7/8”
230
170
570
420
880
650
1”
345
225
850
630
1320
970
Figure 14 - Imperial Bolt Specifications
Bolt
Diameter
“A”
Bolt Torque*
8.8
10.9
(N.m.)
(lb.-ft.)
(N.m.)
(lb.-ft.)
M3
0.5
0.4
1.8
1.3
M4
3
2.2
4.5
3.3
M5
6
4
9
7
M6
10
7
15
11
M8
25
18
35
26
M10
50
37
70
52
M12
90
66
125
92
M14
140
103
200
148
M16
225
166
310
229
M20
435
321
610
450
M24
750
553
1050
774
M30
1495
1103
2100
1550
M36
2600
1917
3675
2710
Figure 15 - Metric Bolt Specifications
The 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 cap screws unless otherwise specified in this
manual. When using locking elements, increase torque values by 5%.
* Torque value for bolts and cap screws are identified by their head markings.