Appendix
HTX30 Product Manual
8-14
Nuts on bolts and screws
Size
Torque
Metric
M3
0.8 N·m (0.6 lbf ft)
M4
2 N·m (1.5 lbf ft)
M5
4 N·m (3 lbf ft)
M6
7 N·m (5.2 lbf ft)
M8
16.5 N·m (12.2 lbf ft)
M10
33 N·m (24 lbf ft)
M12
60 N·m (44 lbf ft)
M16
140 N·m (103 lbf ft)
M20
260 N·m (192 lbf ft)
M24
410 N·m (302 lbf ft)
Imperial
1/4" UNC
7.5 N·m (5.5 lbf ft)
5/16" UNC
15.3 N·m (11.3 lbf ft)
3/8" UNC
27 N·m (20 lbf ft)
1/2" UNC
65 N·m (48 lbf ft)
5/8" UNC
130 N·m (96 lbf ft)
3/4" UNC
230 N·m (170 lbf ft)
Screw tightening torques
Bolts and screws in all metals
Size
Torque
Metric
M2
0.2 N·m (0.15 lbf ft)
M2.5
0.35 N·m (0.25 lbf ft)
M3
0.6 N·m (0.4 lbf ft)
M4
1.5 N·m (1.1 lbf ft)
M5
3 N·m (2.2 lbf ft)
M6
5 N·m (3.7 lbf ft)
M8
12 N·m (9 lbf ft)
M10
24 N·m (18 lbf ft)
M12
45 N·m (33 lbf ft)
M16
95 N·m (70 lbf ft)
M20
180 N·m (133 lbf ft)
Imperial
1/4" UNC
5 N·m (3.7 lbf ft)
5/16" UNC
11 N·m (8 lbf ft)
3/8" UNC
19 N·m (14 lbf ft)
1/2" UNC
45 N·m (33 lbf ft)
5/8" UNC
89 N·m (66 lbf ft)
3/4" UNC
160 N·m (118 lbf ft)
The minimum thread length required in aluminium castings is twice the screw or bolt diameter.
Summary of Contents for HTX30
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