TM9-2330-368-14&P
Table H-2. Self-Locking Nut Breakaway Torque Values
Minimum Breakaway
Minimum Breakaway
Torque (lb -in.)
Torque (lb -in.)
Thread Size
Thread Size
10-32
2.0
32.0
5/8-18
1/4-28
3.5
3/4-16
50.0
6.5
7/8-14
70.0
5/16-24
90.0
3/8-24
9.5
1-12
14.0
1-1/8-12
117.0
7/16-20
18.0
143.0
1/2-20
1-1/4-12
9/16-18
24.0
NOTE
To determine breakaway torque, thread nut onto screw or bolt until at least
two threads stick out. Nut shall not make contact with a mating part. Stop
the nut. Torque necessary to begin turning nut again is the breakaway torque.
Do not reuse self-locking nuts that do not meet minimum breakaway torque.
H-2