MIL-DTL-52525/31B
Hose
Hose
Tube
Thread
Part or Identifying
C max
ID
OD
OD
size
Number (PIN)
inches (cm)
inches (mm)
inches (mm)
inches (mm)
(see note 3)
M52525/31-12-12
.75 (19.05)
1.26 (32.00)
.75 (19.05)
1.063-12-UNC
5.95 (15.11)
M52525/31-16-16
1.00 (25.40)
1.51 (38.35)
1.00 (25.40)
1.313-12-UNC
6.37 (16.18)
N
H
L max
M min
inches (mm)
PIN
Hex
+.030 (0.76)
inches (mm)
inches (mm)
size
-.015 (0.38)
M52525/31-12-12
1.25 (31.75)
1.88 (47.75)
.469 (11.91)
.562 (14.27)
M52525/31-16-16
1.50 (38.10)
2.31 (58.67)
.563 (14.30)
.594 (15.09)
N
P
Q min
inches (mm)
(see note 4)
PIN
inches
.030
inches (mm)
(mm)
.005
.015
M52525/31-12-12
.562 (14.27)
.850 (21.59)
.61 (15.5)
M52525/31-16-16
.594 (15.09)
1.100 (27.94)
.78 (19.8)
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Threads shall be in accordance with ASME B1.1 series with constant pitches (UNC), class 2B.
4. Dimension P to be concentric with dimension Q within .015 inch (0.38 mm) full indicator movement.
5. Method of fabrication and assembly of swivel nut is optional.
6. These fittings are similar to SAE-J516 type to be used with SAE-J517, type 100RE hose.
FIGURE 1. Fitting, screw-on to 37 flare female swivel, straight - Continued.
REQUIREMENTS:
The fittings described herein are for use with hose in accordance with MIL-DTL-52471/7, type 100RE,
4-spiral-wrap reinforcement hose and hose assemblies in accordance with MIL-DTL-52471/8.
Fittings shall be as specified on figure 1 and in tables I, II, and III.
If fittings are to be used on an oxygen hose, see MIL-DTL-52525.
Materials and finishes shall be in accordance with MIL-DTL-52525 and in table I. All finishes shall be
capable of withstanding 96 hours minimum of salt spray.
2