DV11
Operation and Maintenance
205
Appendix
Printed in Mar. 2005 PS-MMA0608-E1A
z Standard bolt tightening torque table
Refer to the following table for bolts other then described above
Degree of strength
3.6 4.6 4.8 5.6 5.8 6.6 6.8 6.9 8.8 10.9 12.9
(4A) (4D) (4S) (5D) (5S) (6D) (6S) (6G) (8G) (10K) (12K)
Limit value for elasticity (kg/mm
2
)
20 24 32 30 40 36 48 54 64 90 108
Diameter
x
pitch (mm)
Tightening torque (kg.m)
M5 0.15 0.16 0.25 0.22 0.31 0.28 0.43 0.48 0.5 0.75 0.9
M6 0.28 0.30 0.45 0.4 0.55 0.47 0.77 0.85 0.9 1.25 0.5
M7 0.43 0.46 0.7 0.63 0.83 0.78 1.2 1.3 1.4 1.95 2.35
M8 0.7 0.75 1.1 1 1.4 1.25 1.9 2.1 2.2 3.1 3.8
M8x1 0.73 0.8 1.2 1.1 1.5 1.34 2.1 2.3 2.4 3.35 4.1
M10 1.35 1.4 2.2 1.9 2.7 2.35 3.7 4.2 4.4 6.2 7.4
M10x1 1.5 1.6 2.5 2.1 3.1 2.8 4.3 4.9 5 7 8.4
M12 2.4 2.5 3.7 3.3 4.7 4.2 6.3 7.2 7.5 10.5 12.5
M12x1.5 2.55 2.7 4 3.5 5 4.6 6.8 7.7 8 11.2 13.4
M14 3.7 3.9 6 5.2 7.5 7 10 11.5 12 17 20
M14x1.5 4.1 4.3 6.6 5.7 8.3 7.5 11.1 12.5 13 18.5 22
M16 5.6 6 9 8 11.5 10.5 17.9 18.5 18 26 31
M16x1.5 6.2 6.5 9.7 8.6 12.5 11.3 17 19.5 20 28 33
M18 7.8 8.3 12.5 11 16 14.5 21 24.2 25 36 43
M18x1.5 9.1 9.5 14.5 12.5 18.5 16.7 24.5 27.5 28 41 49
M20 11.5 12 18 16 22 19 31.5 35 36 51 60
M20x1.5 12.8 13.5 20.5 18 25 22.5 35 39.5 41 58 68
M22 15.5 16 24.5 21 30 26 42 46 49 67 75
M22x1.5 17 18.5 28 24 34 29 47 52 56 75 85
M24 20.5 21.5 33 27 40 34 55 58 63 82 92
M24x1.5 23 25 37 31 45 38 61 67 74 93 103
Others:
1. The above torque rating have been determined to 70% or so of the limit value for
bolt elasticity.
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 MoS
2
should be tightened to 60% or so of the
standard value.
z Tightening torque for plug screw
M10 M12 M14 M16 M18 M22 M24 M26 M30
5.0 5.0 8.0 8.0 10.0 10.0 12.0 12.0 15.0
z Tightening torque for hollow screw(4-hole)
M8 M10 M12 M14 M16 M18 M22 M26 M30 M38
SM25C - 1.6 2.5 3.5 4.5 5.5 9.0 13.0 18.0 30.0
*SUM22L 0.8 1.8 3.0 4.0 5.5 6.5 11.0 16.0 20.0 35.0
STS304 0.8 1.8 3.0 4.0 5.5 6.5 11.0 16.0 20.0 35.0
* : Adopted in DAEWOO engine
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