Westerbeke 6.5KW - Table of Standard Tighteing Torques

TABLE OF STANDARD HARDWARE TIGHTENING TORQUES
Unless stated otherwise for a specific assembly, use the following torque values when tightening standard
hardware.
Pitch
Ib-ft
kg-m
Grade4T
6mm bolt head/nut
1
2.9 - 5.1
0.4 - 0.7
8mm bolt head/nut
1.25
7.2 - 11.6
1.0 - 1.6
10mm bolt head/nut
1.25
13.7 - 22.4
1.9 -
3.1
10mm bolt head/nut
1.5
13.0 - 21.7
1.8 -
3.0
12mm bolt head/nut
1.25
(ISO)
25.3 - 39.8
3.5 - 5.5
12mm bolt head/nut
1.5
25.3 - 39.8
3.5 - 5.5
12mm
bolt head/nut
1.75
21.7 - 36.2
3.0 - 5.0
13mm bolt head/nut
1.5
32.5 - 50.6
4.5 - 7.0
14mm bolt head/nut
1.5
36.2 - 57.9
5.0 - 8.0
14mm bolt head/nut
2
34.0 - 55.7
4.7 - 7.7
16mm bolt head/nut
1.5
54.2 - 79.6
7.5-11.0
16mm bolt head/nut
2
51.4- 76.7
7.1 -10.6
Grade6T
6mm bolt head/nut
1
4.3 -
6.5
0.6 - 0.9
8mm bolt head/nut
1.25
10.8 - 15.9
1.5 - 2.2
10mm bolt head/nut
1.25
21.7 - 32.5
3.0 - 4.5
10mm bolt head/nut
1.5
19.5 -
30.4
2.7 - 4.2
12mm
bolt head/nut
1.25 (ISO)
36.2 - 57.9
5.0 - 8.0
12mm bolt head/nut
1.5
36.2 - 50.6
5.0 - 7.0
12mm bolt head/nut
1.75
34.7 - 49.2
4.8 - 6.8
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Grade 7T, 8Tand 8.8
6mm bolt head/nut
1
5.8 - 8.7
0.8 - 1.2
8mm bolt head/nut
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 head/nut
1.25 (ISO)
54.2 - 75.9
7.5 -10.5
12mm bolt head/nut
1.5
50.6 - 65.1
7.0 - 9.0
12mm bolt head/nut
1.75
43.4 - 61.5
6.0 - 8.5
13mm bolt head/nut
1.5
57.9 - 86.8
8.0 -12.0
14mm bolt head/nut
1.5
72.3
-108.5
10.0 -15.0
14mm bolt head/nut
2
68.7 -101.3
9.5 -14.0
16mm bolt head/nut
1.5
108.5 - 166.4
15.0 - 23.0
16mm bolt head/nut
2
101.3 -159.1
14.0 - 22.0
Grade 5 capscrew
1/4 UNC
9 -
11
1.2 - 1.5
1/4 UNF
11 - 13
1.5 - 1.8
5/16
UNC
18 - 20
2.5 - 2.8
5/16 UNF
21 - 23
2.9 - 3.2
3/8
UNC
28 - 33
3.7 -4.6
3/8 UNF
30 -
35
4.1 - 4.8
7/16
UNC
44-
49
6.1 - 6.8
7/16 UNF
50 - 55
6.9 - 7.6
1/2
UNC
68 -
73
9.4-10.1
1/2 UNF
73 -
80 10.1 -11.1
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