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0A-24 GENGERAL 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
An equivalent of 4T strength
fastener
An equivalent of 6.8 strength
fastener without flange
An equivalent of 6.8 strength
fastener with flange
An equivalent of 7T strength
fastener
An equivalent of 8.8 strength
fastener without flange
An equivalent of 8.8 strength
fastener with flange
(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
Self-lock
lb-ft
2.0
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
10
3.0
5.5
13
29
0.30
0.55
1.3
2.9
2.5
4.0
9.5
21.0
4.7
8.4
20
42
0.47
0.84
2.0
4.2
3.5
6.0
14.5
30.5
4.9
8.8
21
44
0.49
0.88
2.1
4.4
3.5
6.5
15.5
32.0
4.5
10
23
50
0.45
1.0
2.3
5.0
3.5
7.5
17.0
36.5
6.3
11
27
56
0.63
1.1
2.7
5.6
4.5
8.0
19.5
40.5
6.5
12
29
59
0.65
1.2
2.9
5.9
5.0
9.0
21.0
43.0
12
14
16
18
45
65
105
160
4.5
6.5
10.5
16
32.5
47.0
76.0
116.0
80
125
193
280
8.0
12.5
19.3
28
58.0
90.5
139.5 202.5
84
133
203
298
8.4
13.3
20.3
29.8
61.0
96.5
147.0 215.5
85
135
210
240
8.5
13.5
21
24
61.5
98.0
152.0 174.0
105
168
258
373
10.5
16.8
25.8
37.3
76.0
121.5 187.0 270.0
113
175
270
395
11.3
17.5
27
39.5
82.0
126.5 195.5 286.0
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