TM 5-4220-226-14&P
APPENDIX H
TORQUE LIMITS
SECTION I. INTRODUCTION
H-1. Scope.
This appendix provides standard torque values and general information and methods for applying torque.
H-2. General.
Only standard torque values are provided in this appendix. Special torque values and sequences are provided
in the maintenance procedures for applicable components.
SECTION II. TORQUE LIMITS
H-3. Breakaway Torque Values.
Refer to table H-1 for minimum breakaway torque values.
Table H-1. Self-Locking Nut Breakaway Torque Values
Thread
Minimum Breakaway
Thread
Minimum Breakaway
Size
Torque (In.-Lbs.)
Size
Torque (In.-Lbs.)
10-32
2.0
5/8-18
32.0
1/4-28
3.5
3/4-16
50.0
5/16-24
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
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-1/(H-2 blank)
