Torque Specifications - TRAPP TR-600 Manual De Instrucciones

For proper screw tightening, use an adequate torque wrench and the values listed in the tables below:
Thread
M6
M8
M10
M12
M14
M16
These are guiding values, and are based on average conditions of steel-to-steel friction.
Thread
N.m
1/4 12.1
5/16 23.9
3/8 41.5
1/2 101.0
9/16 143.0
5/8 199.0
These are guiding values, and are based on average conditions of steel-to-steel friction.
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Torque Specifications

Screw torques - metric - coarse thread - UNC
Screw torques - Inches
Coarse thread- UNC
Grade 5 Grade 8
lbf.ft N.m
8.9 17.0
17.6 33.9
30.6 58.4
74.4 141.0
105.4 201.0
146.7 280.0
Resistance class - 8.8
N.m
10.6
25.6
51.2
88.0
138.0
210.0
Resistance class
Fine thread - UNF
Grade 5
lbf.ft N.m
12.5 13.5
25.0 25.9
43.0 45.7
104.0 110.0
154.8 155.0
206.5 219.0
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lbf.ft
7.8
18.8
37.7
64.9
101.7
154.8
Grade 8
lbf.ft N.m
9.9 18.9
19.1 36.6
33.7 64.2
81.1 155.0 114.3
114.3 219.0 161.5
161.5 308.0 227.1
lbf.ft
13.9
26.9
47.3