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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 of bolt.
ENGLISH TORQUE SPECIFICATIONS
Bolt
Bolt Torque *
Diameter
SAE 2
"A"
N.m (lb-ft)
1/4 ''
8
(6)
5/16 ''
13
(10)
3/8 ''
27
(20)
7/16 ''
41
(30)
1/2 ''
61
(45)
9/16 ''
95
(70)
5/8 ''
128
(95)
3/4 ''
225
(165)
7/8 ''
230
(170)
1 ''
345
(225)
M ETRIC TORQUE SPECIFICATIONS
Bolt
Bolt Torque
Diameter
8.8
"A "
N.m
(lb-f t)
M3
.5
(.4)
M4
3
(2.2)
M5
6
(4)
M6
10
(7)
M8
25
(18)
M10
50
(37)
M12
90
(66)
M14
140
(103)
M16
225
(166)
M20
435
(321)
M24
750
(553)
M30
1495 (1103) 2100 (1550)
M36
2600 (1917) 3675 (2710)
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.
TORQUE SPECIFICATIONS
SAE 5
SAE 8
N.m (lb-ft)
N.m (lb-ft)
12
(9)
17
(12)
25
(19)
36
(27)
45
(33)
63
(45)
72
(53)
100
(75)
110
(80)
155
(115)
155
(115)
220
(165)
215
(160)
305
(220)
390
(290)
540
(400)
570
(420)
880
(650)
850
(630) 1320 (970)
10.9
N.m
(lb-f t)
1.8
(1.3)
4.5
(3.3)
9
(7)
15
(11)
35
(26)
70
(52)
125
(92)
200
(148)
310
(229)
610
(450)
1050 (774)
17
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