MIL-DTL-52525/4D
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, and a material finish designator.
M
52525/4
-6
-6
A
Material/finish designator (see table I)
Size dash number for tube (see figure 1)
Size dash number for hose (see figure 1)
Specification sheet number
M prefix
PIN example: M52525/4-6-6A, describes a 37° flare female swivel, 90° bent tube for a .375 inches
(9.53 mm) hose ID, and a .375 inches (9.53 mm) tube OD, aluminum with an anodize 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 IV 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.
TABLE IV. Harmonization to SAE-J516 cross reference PIN. 1/
PIN
SAE PIN
M52525/4-4-4
SAE J516 4-4 241554
M52525/4-4-5
SAE J516 5-4 241554
M52525/4-6-6
SAE J516 6-6 241554
M52525/4-6-8
SAE J516 6-8 241554
M52525/4-8-8
SAE J516 8-8 241554
M52525/4-8-10
SAE J516 10-8 241554
M52525/4-12-12
SAE J516 12-12 241554
M52525/4-16-16
SAE J516 16-16 241554
1/ Material and finish designators are omitted
from PIN's, see table I and SAE-J846.
Changes from previous issue. Marginal notations are not used in this revision to identify changes with
respect to the previous issue, due to the extent of the changes.
6
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