TABLE
OF
STANDARD HARDWARE TIGHTENING TORQUES
Unless stated
otherwise
for a specific assembly, use the following torque values when tightening
stand-
ard hardware.
Pitch
Ib-ft
kg-m
Grade4T
6mm
bolt head/nut 1 2.9 -
5.1
0.4-
0.7
8mm bolt headlnut
1.25
7.2-
11.6
1.0 - 1.6
10mm
bolt
headlnut
125
13.7 - 22.4
1.9
-
3.1
10mm bolt headlnut 1.5 13.0 - 21.7
1.8
- 3.0
12inril
bolt headlnut 1.25
OSO)
25.3-
39.8
3.5-
5.5
12mm
bolt headlnut 1.5
25.3-
39.8
3.5-
5.5
12mm
bolt headlnut 1.75
21.7
- 36.2
3.0 - 5.0
13mm bolt headlnut 1.5
32.5
-
SO.6
4.5 - 7.0
14mm bolt head/nut 1.5
36.2-
57.9
5.0-
8.0
14mm bolt headlnut 2
34.0-
55.7
4.7-
7.7
16mm
bolt headlnut 1.5
54.2-
79.6 7.5 -11.0
16mm bolt headlnut
2
51.4 - 76.7
7.1
-10.6
Grade
IiI
6mm
bolt headlnut 1
4.3-
6.5
0.6-
0.9
8mm bolt headlnut 1.25. 10.8 - 15.9
1.5
- 2.2
IOmm
bolt headlnut 1.25 21.7 - 32.5
3.0-
4.5
101nm
bolt head/nut 1.5
19.5-
30.4
2.7
- 4.2
12mr'n
bolt headlnut
1.25
OSO)
36.2-
57.9
5.0-
8.0
12mm bolt headlnut
1.5
36.2-
SO.6
5.0 - 7.0
12mm bolt headlnut 1.75
34.7
- 49.2
4.8-
6.8
Glilda
II
III
11l1li
B B
6mm bolt headlnut
1
5.8-.8.7
0.8 - 1.2
8mm
bolt
headlnut 1.25 14.5 - 21.7
2.0 - 3.0
10mm
bolt head/nut
1.25
28.9-
39.8
4.0 - 5.5
10mm bolt head!nut 1.5
26.8-
37.6
3.7-
5.2
12mm
bolt headlnut 1.25
OSO)
54.2 - 75.9. 7.5 -10.5
12mm bolt headlnut 1.5 SO.6-
65.1
7.0 - 9.0
12mm bolt headlnut 1.75
43.4-
61.5
6.0-
8.5
13mm
bolt headlnut 1.5
57.9-
86.8 8.0 -12.0
14mm bolt headlnut 1.5 72.3 -108.5 10.0 -15.0
14mm bolt h8adJnut
2 68.7 -101.3
9.5
-14.0
16mm bolt headlnut
1.5 108.5
- 166.4 15.0
-23.0
;
16mm bolt headlnut 2 101.3 -159.1
14.0
-22.0
Gradali
capsr:'--
1/4UNC
9 -
11
1.2-
1.5
1/4UNF
11
-
13 1.5 - 1.8
5/16UNC 18
- 20
2.5-
2.8
5/16UNF
21
- 23
2.9-
3.2
3/8UNC
28 -
33
3.7 - 4.6
3/8UNF
30-
35
4.1·
4.8
7/16UNC
44-
49
6.1
- 6.8
7/16UNF
SO
-.
55
6.9-
7.6
)
1/2UNC
68-
73
9.4
-10.1
1/2 UNF
73 - 80
10.1
-11.1
Engines & Generators
65
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