TM 9-2320-302-34
0123 00-3
Table 2. Refrigerant Line Torque Specifications.
* When tightening fittings, always use torque reading for softer metal when unlike metals are used.
OUTSIDE DIAMETER OF
METAL TUBE (IN)
TORQUE FOR STEEL
TUBES* LB-FT (NM)
TORQUE FOR ALUMINUM OR
COPPER* TUBES
1/4
10-15 (14-20)
60-80 (680-940)
3/8
30-35 (41-47)
11-13 (15-18)
1/2
30-35 (41-47)
15-20 (20-27)
5/8
30-35 (41-47)
21-27 (28-37)
3/4
30-35 (41-47)
28-33 (38-45)
