TM 5-3805-261-20
APPENDIX E. (cont.)
TORQUE LIMITS. (cont.)
c.
TABLE E-3. TORQUE LIMITS FOR FLARED AND PREFORMED PACKING FITTINGS USED WITH
STEEL TUBING. The torque values shown in Table E-3 are to be used with 37 degree flared, 45 degree flared and
inverted flared fittings (when used with steel tubing), preformed packing plugs and fittings. The torque required for these
fittings are based upon thread size.
TABLE E-3.
TORQUE LIMITS FOR FLARED AND PREFORMED FITTINGS
USED WITH STEEL TUBING
Tube O.D.
Thread
Torque
Tube O.D.
Thread
Torque
(Inch)
Size
LB-IN
(Inch)
Size
LB-FT
Inch
Inch
.500
7/8
35-45
.625
7/8
35-45
.125
5/16
35-55
.750
1 1/16
50-60
.188
3/8
90-110
.875
1 3/16
60-70
1 1/4
.250
7/16
125-165
60-70
.312
1/2
155-195
1.000
1 5/16
75-85
.375
9/16
165-245
1.250
1 5/8
90-100
5/18
165-245
1.500
1 7/8
110-130
2.000
2 1/2
210-250
E-3
