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TABLE OF STANDARD HARDWARE TIGHTENING TORQUES
Unless stated otherwise for a specific assembly, use the following torque values when tightening standard hardware.
Grade 4
6mm bolt head/nut
Snun bolt head/nut
10
mm
bolt head/nut
10
mm
bolt headJnut
12
mm
bolt headJnut
12
nun
bolt head/nut
12
mm
bolt head/nut
13
nun
bolt head/nut
14
nUll
bolt head/nut
14 mIll bolt head/nut
16 mm bolt head/nut
16
mm
bolt head/nut
Grade 6T
6nml bolt head/nut
8nun bolt head/nut
10
mm
bolt heaclJnut
10
mm
bolt head/nut
12
mm
bolt head/nut
12
nun
bolt head/nut
12
nun
bolt head/nut
Grade 7T. 8T and 8.8
6m111 bolt head/nut
Smm bolt head/nut
10 nun bolt head/nut
10
mm
bolt head/nut
12
llU11
bolt head/nut
12
nml
bolt head/nut
12
nUll
bolt head/nut
13
lUm
bolt head/nut
14 nun bolt head/nut
14
nun
bolt head/nut
16
I1Ull
bolt head/nut
16
111m
bolt headfnut
Grade 5 eap sere\\"
1/4 UNC
1/4 UNF
5116 UNC
5116 UNF
3/8 UNC
3/8 UNF
7116 UNC
7116 UNF
1/2UNC
1/2 UNF
Westerbeke Diesel Engines
Pitch
1.25
1.25
1.5
125 (ISO)
1.5
1.75
1.5
1.5
2
1.5
2
1.25
1.25
1.5
1.25 (ISO)
1.5
1.75
1.25
1.25
1.5
1.25 (ISO)
1.5
1.75
1.5
1.5
2
1.5
2
100
Ib-ft
kg-m
2.9 - 5.1
0.4 - .07
7.2 - 11.6
1.0 - 1.6
13.7-22.4
1.9-3.1
13.0-21.7
1.8 - 3.0
25.3 - 39.8
3.5 - 5.5
25.3 - 39.8
3.5 - 5.5
21.7 - 36.2
3.0 - 5.0
32.5 - 50.6
4.5 - 7.0
36.2 - 57.9
5.0 - 8.0
34.0 - 55.7
4.7 - 7.7
54.2 - 79.6
7.5-11.0
51.4 - 76.7
7.1-10.6
4.3 - 6.5
0.6 - 0.9
10.8 - 15.9
1.5 - 2.2
21.7 - 32.5
3.0 - 4.5
19.5 - 30.4
2.7-4.2
36.2 - 57.9
5.0 - 8.0
36.2 - 50.6
5.0 - 7.0
34.7 - 49.2
4.8 - 6.8
5.8-8.7
0.8 -
1.2
14.5 - 21.7
2.0 - 3.0
28.9 - 39.8
4.0 - 5.5
26.8 - 37.6
3.7 - 5.2
54.2 - 75.9
7.5 - 10.5
50.6 -65.1
7.0 - 9.0
43.4 -61.5
6.0 - 8.5
57.9 - 86.8
8.0 - 12.0
72. 3 - 108.5
10.0 - 15.0
68.7 - 101.3
9.5 - 14.0
108.5 - 166.4
15.0 - 23.0
101.3 - 159.1
14.0 - 22.0
9 - 11
1.2 - 1.5
II - 13
1.5 - 1.8
18 - 20
2.5 - 2.8
21 - 23
2.9 - 3.2
28 - 33
3.7 - 4.6
30 - 35
4.1-4.8
44 -49
6.1 - 6.8
50 - 55
6.9 -7.6
68 -73
9.4 - 10.1
73 - 80
10.1-11.1
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