TM 5-3895-379-23-2
0284
GENERAL TORQUE VALUES - Continued
Flat Face O-Ring Seal Fittings Service Recommendations - Continued
5.
Table 12 lists the Flat Face O-Ring Seal Fitting Torque Values.
Table 12.
Flat Face O-Ring Seal Fitting Torque Values*.
Nominal Tube OD
Thread Size
Swivel Nut
Bulkhead Nut
in.
mm
in.
lb-ft
Nm
lb-ft
Nm
0.250
6.35
9/16-18
12
16
9
12
0.375
9.52
11/16-16
18
24
18
24
0.500
12.70
13/16-16
37
50
34
46
0.625
15.88
1-14
51
69
46
62
0.750
19.05
1-3/16-12
75
102
75
102
0.875
22.22
1-3/16-12
75
102
75
102
1.000
25.40
1-7/16-12
105
142
105
142
1.250
31.75
1-11/16-12
140
190
140
190
1.500
38.10
2-12
160
217
160
217
* Torque tolerance is +15 -20% unless otherwise specified.
6.
Table 13 lists the Stud End O-Ring Seal Torque Values for Straight and Adjustable Fittings.
Table 13.
Stud End O-Ring Seal Torque Values for Straight and Adjustable Fittings*.
Straight Hex Size
Locknut Hex Size
Straight Fitting or Locknut Torque
Thread Size
inch
inch
inch
lb-ft
Nm
3/8-24
5/8
9/16
9
12
7/16-20
5/8
5/8
15
21
1/2-20
3/4
11/16
19
26
9/16-18
3/4
3/4
25
34
3/4-16
7/8
15/16
55
73
7/8-14
1-1/16
1-1/16
76
104
03/15/2011Rel(1.8)root(torquewp)wpno(M00222)