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0A-24 GENERAL INFORMATION
STANDARD TIGHTENING TORQUE
Each fastener should be tightened to the torque specified in each section of this manual. If no description or specifi-
cation is provided, refer to the following tightening torque chart for the applicable torque for each fastener. When
a fastener of greater strength than the original one is used, however, use the torque specified for the original fasten-
er.
NOTE:
D For the flanged bolt, flanged nut and self-lock nut of 4T and 7T strength, add 10% to the tightening torque
given in the chart below.
D The chart below is applicable only where the fastened parts are made of steel or light alloy.
Tightening torque chart
Thread Diameter (Nominal Diameter)
Strength
A equivalent of 4T strength
fastener
A equivalent of 6.8 strength
fastener without flange
g
A equivalent of 6.8 strength
fastener with flange
g
A equivalent of 7T strength
fastener
A equivalent of 8.8 strength
fastener without flange
g
A equivalent of 8.8 strength
fastener with flange
g
(mm)
4
.
N
m
1.5
kg-m
0.15
lb-ft
1.0
.
N
m
2.4
kg-m
0.24
lb-ft
2.0
.
N
m
2.4
kg-m
0.24
lb-ft
2.0
Self-lock
nut
.
N
m
2.3
kg-m
0.23
lb-ft
2.0
.
N
m
3.1
kg-m
0.31
lb-ft
2.5
.
N
m
3.2
kg-m
0.32
lb-ft
2.5
5
6
8
3.0
5.5
13
0.30
0.55
1.3
2.9
2.5
4.0
9.5
21.0
4.7
8.4
20
0.47
0.84
2.0
4.2
3.5
6.0
14.5
30.5
4.9
8.8
21
0.49
0.88
2.1
4.4
3.5
6.5
15.5
32.0
4.5
10
23
0.45
1.0
2.3
5.0
3.5
7.5
17.0
36.5
6.3
11
27
0.63
1.1
2.7
5.6
4.5
8.0
19.5
40.5
6.5
12
29
0.65
1.2
2.9
5.9
5.0
9.0
21.0
43.0
10
12
14
16
29
45
65
105
4.5
6.5
10.5
32.5
47.0
76.0
42
80
125
193
8.0
12.5
19.3
58.0
90.5
139.5 202.5
44
84
133
203
8.4
13.3
20.3
61.0
96.5
147.0 215.5
50
85
135
210
8.5
13.5
21
61.5
98.0
152.0 174.0
56
105
168
258
10.5
16.8
25.8
76.0
121.5 187.0 270.0
59
113
175
270
11.3
17.5
27
82.0
126.5 195.5 286.0
18
160
16
116.0
280
28
298
29.8
240
24
373
37.3
395
39.5
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