Westerbeke 38B FOUR - Standard Hardware Torques

STANDARD HARDWARE TORQUES
NOTE: Unless stated otherwise for a specific assembly, use the following torque values when tightening standard hardware.
Grade 4
Pitch
Ib-ft kg-m
Grade 7T, 8T and 8.8 Pitch
Ib-ft kg-m
6mm bolt head/nut 2.9-5.1
0.4-0.7
6mm bolt head/nut 5.8-8.7 0.8-1.2
8mm bolt head/nut 1.25 7.2-11.6 1.0-1.6
8mm bolt head/nut
1.25
14.5-21.7 2.0-3.0
10mm bolt head/nut
1.25 13.7-22.4 1.9-3.1
10mm bolt head/nut 1.25
28.9-39.S 4.0-5.5
10mm bolt head/nut
1.5
13.0-21.7
1.8-3.0
10mm bolt head/nut 1.5 26.8-37.6
3.7-5.2
12mm bolt head/nut 1.25 (ISO)
25.3-39.S
3.5-5.5
12mm bolt head/nut 1.25 (ISO)
54.2-75.9
7.5-10.5
12mm bolt head/nut
1.5
25.3-39.8
3.5-5.5
12mm bolt head/nut
1.5
50.6-65.1 7.0-9.0
12mm bolt head/nut 1.75 21.7-36.2
3.0-5.0
12mm bolt head/nut
1.75 43.4-61.5 6.0-S.5
13mm bolt head/nut
1.5
32.5-50.6
4.5-7.0
13mm bolt head/nut 1.5
57.9-86.8 8.0-12.0
14mm bolt head/nut 1.5
36.2-57.9 5.0-8.0
14mm bolt head/nut 1.5
72.3-108.5 10.0-15.0
14mm bolt head/nut
2 34.0-55.7 4.7-7.7
14mm bolt head/nut
2
68.7-101.3 9.5-14.0
16mm bolt head/nut 1.5
54.2-79.6
7.5-11.0
16mm bolt head/nut
1.5 108.5-166.4 15.0-23.0
16mm bolt head/nut
2
51.4-76.7
7.1-10.6
16mm bolt head/nut 2
101.3-159.1
14.0-22.0
Grade 6T
Grade 5 Cap Screw
6mm bolt head/nut
4.3-6.5
0.6-0.9
1/4 UNC 9-11 1.2-1.5
8mm bolt head/nut
1.25
10.S-15.9
1.5-2.2
1/4 UNF 11-13 1.5-1.8
10mm bolt head/nut
1.25
21.7-32.5
3.0-4.5
5/16 UNC
1S-20 2.5-2.8
10mm bolt head/nut 1.5 19.5-30.4 2.7-4.2
5/16 UNF
21-23
2.9-3.2
12mm bolt head/nut
1.25 (ISO) 36.2-57.9 5.0-8.0
3/8 UNC
28-33
3.7-4.6
12mm bolt head/nut 1.5
36.2-50.6
5.0-7.0
3/8 UNF
30-35
4.1-4.8
12mm bolt head/nut 1.75 34.7-49.2
4.8-6.8
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-S0 10.1-11.1
Engines & Generators
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