jcb JS300 Service Manual page 32

Bolt Size
in. mm
1/4 6.3
5/16 7.9
3/8 9.5
7/16 11.1
1/2 12.7
9/16 14.3
5/8 15.9
3/4 19.0
7/8 22.2
1 25.4
1 1/8 31.7
1 1/4 38.1
Bolt Size
ISO Metric
Thread mm
M5
M6
M8
M10 10
M12 12
M16 16
M20 20
M24 24
M30 30
M36 36
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Table 2. Torque Settings - UNF Grade 'S' Fasteners
Hexagon (A/F)
in.
7/16
1/2
9/16
5/8
3/4
13/16
15/16
1 1/8
1 15/16
1 1/2
1 7/8
2 1/4
Table 3. Torque Settings - Metric Grade 8.8 Fasteners
Hexagon (A/F)
mm
5 8
6 10
8 13
17
19
24
30
36
46
55
Section 1 - General Information
Zinc Plated Fasteners and Dacromet Fasteners
Condition 1
Nm kgf m
11.2 1.1
22.3 2.3
40.0 4.1
64.0 6.5
98.00 10.0
140.0 14.3
196.0 20.0
343.0 35.0
547.0 55.8
814.0 83.0
1181.0 120.4
1646.0 167.8
Condition 1
Nm kgf m
5.8 0.6
9.9 1.0
24.0 2.4
47.0 4.8
83.0 8.5
205.0 20.9
400.0 40.8
690.0 70.4
1372.0 139.9
2399.0 244.6
1-07-00 Issue 01
Torque Settings
Condition 2
lbf ft Nm kgf m
8.3 10.0 1.0
16.4 20.0 2.0
29.5 36.0 3.7
47.2 57.0 5.8
72.3 88.0 9.0
103.2 126.0 12.8
144.6 177.0 18.0
253.0 309.0 31.5
403.4 492.0 50.2
600.4 732.0 74.6
871.1 1063.0 108.4
1214.0 1481.0 151.0
Condition 2
lbf ft Nm kgf m
4.3 5.2 0.5
7.3 9.0 0.9
17.7 22.0 2.2
34.7 43.0 4.4
61.2 74.0 7.5
151.2 184.0 18.8
295.0 360.0 36.7
508.9 621.0 63.3
1011.9 1235.0 125.9
1769.4 2159.0 220.0
lbf ft
7.4
14.7
26.5
42.0
64.9
92.9
130.5
227.9
362.9
539.9
784.0
1092.3
lbf ft
3.8
6.6
16.2
31.7
54.6
135.7
265.5
458.0
910.9
1592.4
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