Standard Bolt Tightening Torque Table; Degree Of Strength - Daewoo DE12T Manual

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Standard bolt tightening torque table

Refer to the following table for bolts other then described above
Diameter 3.6
(4A)
B
pitch
(mm) 20
M5 0.15
M6 0.28
M7 0.43
M8 0.7
M8 1 0.73
B
M10 1.35
M10 1 1.5
B
M12 2.4
M12 1.5 2.55
B
M14 3.7
M14 1.5 4.1
B
M16 5.6
M16 1.5 6.2
B
M18 7.8
M18 1.5 9.1
B
M20 11.5
M20 1.5 12.8
B
M22 15.5
M22 1.5 17
B
M24 20.5
M24 1.5 23
B
Others : 1. The above torque rating have been determined to 70% or so of the limit value for bolt elas-
ticity.
2. Tension is calculated by multiplying tensile strength by cross section of thread.
3. Special screws should be tightened to 85% or so of the standard value.
For example, a screw coated with MoS2 should be tightened to 60% or so of the stan-
dard value.
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Tightening torque for hollow screw (4-hole)
Material M8
SM25C -
*SUM22L 0.8
STS304 0.8
* : Adopted in DAEWOO engine

Degree of strength

4.6 4.8 5.6
(4D) (4S) (5D)
Limit value for elasticity (kg/mm 2 )
24 32 30
Tightening torque (kg
0.16 0.25 0.22
0.30 0.45 0.4
0.46 0.7 0.63
0.75 1.1 1
0.8 1.2 1.1
1.4 2.2 1.9
1.6 2.5 2.1
2.5 3.7 3.3
2.7 4 3.5
3.9 6 5.2
4.3 6.6 5.7
6 9 8
6.5 9.7 8.6
8.3 12.5 11
9.5 14.5 12.5
12 18 16
13.5 20.5 18
16 24.5 21
18.5 28 24
21.5 33 27
25 37 31
M10 M12 M14
1.6 2.5 3.5
1.8 3.0 4.0
1.8 3.0 4.0
5.8 6.6 6.8
(5S) (6D) (6S)
40 36 48
m)
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0.31 0.28 0.43
0.55 0.47 0.77
0.83 0.78 1.2
1.4 1.25 1.9
1.5 1.34 2.1
2.7 2.35 3.7
3.1 2.8 4.3
4.7 4.2 6.3
5 4.6 6.8
7.5 7 10
8.3 7.5 11.1
11.5 10.5 17.9
12.5 11.3 17
16 14.5 21
18.5 16.7 24.5
22 19 31.5
25 22.5 35
30 26 42
34 29 47
40 34 55
45 38 61
M16 M18
4.5 5.5
5.5 6.5
5.5 6.5
- 177 -
6.9 8.8 10.9
(6G) (8G) (10K)
54 64 90
0.48 0.5 0.75
0.85 0.9 1.25
1.3 1.4 1.95
2.1 2.2 3.1
2.3 2.4 3.35
4.2 4.4 6.2
4.9 5 7
7.2 7.5 10.5
7.7 8 11.2
11.5 12 17
12.5 13 18.5
18.5 18 26
19.5 20 28
24.2 25 36
27.5 28 41
35 36 51
39.5 41 58
46 49 67
52 56 75
58 63 82
67 74 93
M22 M26 M30
9.0 13.0 18.0
11.0 16.0 20.0
11.0 16.0 20.0
12.9
(12K)
108
0.9
0.5
2.35
3.8
4.1
7.4
8.4
12.5
13.4
20
22
31
33
43
49
60
68
75
85
92
103
M38
30.0
35.0
35.0
APPENDIX