TM 10-4320-309-14
TM 4320-14/1
APPENDIX G
TORQUE LIMITS
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 break-
away torque.
SELF-LOCKING NUT BREAKAWAY TORQUE VALUES
Thread
Minimum Breakaway
Thread
Minimum Breakaway
Size
Torque (In.-Lb)
Size
Torque (In.-Lb)
10-32
2.0
5/8-18
32.0
1/4-28
3.5
3/4-16
50.0
5/1 6-24
6.5
7/8-14
70.0
3/8-24
9.5
1-12
90.0
7/16-20
14.0
1-1/8-12
117.0
1/2-20
18.0
1-1/4-12
143.0
9/16-18
24.0
Standard tightening torque for metric bolts and nuts
M6 - 5.0 - 7.0 lb-ft ( 70-100 kg-cm)
M8 -13.0 - 14.5 lb-ft (180-200 kg-cm)
Specfic Torque Requirements - use table from next page.
G-1
