MIL-DTL-52525/12D
Maximum operating pressure shall be as specified in table II.
TABLE II. Maximum operating pressures of fittings. 1/ 2/
Steel, CRES,
titanium, nickel-
Aluminum
copper alloy , and
SAE dash
Hose ID
high-chromium
size
inches (mm)
nickel
psi
MPa
psi
MPa
-8
.500 (12.70)
3500
24.1
2500
17
-12
.750 (19.05)
2250
15.5
1650
11
-16
1.000 (25.40)
2000
13.8
1000
7
-20
1.250 (31.75)
1625
11.2
850
6
-24
1.500 (38.10)
1250
8.6
750
5
-32
2.000 (50.80)
1125
7.8
600
2
1/ Dimensions are in inches.
2/ Metric equivalents are given for information only.
PIN: The PIN consists of the letter "M" the specification sheet number, a dash, a number for hose
size, a dash, a number for tube size, a dash, a number for flange size, and a material finish
designator.
M
52525/12
-12
-12
A
Material/finish designator (see table I)
Size dash number for flange (see figure 1)
Size dash number for hose (see figure 1)
Specification sheet number
M prefix
PIN example: M52525/12-12-12A, describes a 90° split flange for a .750 inch (19.05 mm) hose, with
a .750 inch (19.05 mm) flange, aluminum with an anodized finish.
To the users of this document, it is recommended that the use of carbon steel material with cadmium
plating be used only when the other materials and finishes specified in this document cannot meet
performance requirements.
Color identification. Color identification shall be in accordance with SAE-AS4841.
Marking shall include the manufacturer's name or trademark, size, and hose identifier R2. Location of
marking is optional.
Harmonization to SAE-J516 cross reference PIN in table III is for reference only. SAE style fittings
may not have the same material/finish as required by MIL-DTL-52525 and legacy with
MIL-DTL-52471.
4
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