PartsTable
Technical Data Sheet
MILC25427 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

COUPLING ASSEMBLY,QUICK DISCONNE. Key specifications include material: ALUMINUM ALLOY OVERALL, leg_length: 0.984 INCHES NOMINAL IN, seat_angle: 12.0 DEGREES, thread_class: 3A FIRST FLUID END CONNECTION A, overall_length: 6.630 INCHES NOMINAL IN, connection_type: THREADED INTERNAL BOSS SECOND FLUID END CONNECTION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-564-2688, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MILC25427
NSN: 4730-00-564-2688
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
leg_length0.984 INCHES NOMINAL IN
seat_angle12.0 DEGREES
thread_class3A FIRST FLUID END CONNECTION A
overall_length6.630 INCHES NOMINAL IN
connection_typeTHREADED INTERNAL BOSS SECOND FLUID END CONNECTION
connection_styleINVERTED FLARE FIRST FLUID END CONNECTION
special_featuresBULKHEAD THREADED ON 2ND END
style_designatorCOUPLING ASSEMBLY
features_providedSELF-SEALING
surface_treatmentANODIZE OVERALL
operating_pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NSN4730-00-564-2688
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MILC25427 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
THREAD SERIES DESIGNATOR: UNF FIRST QUICK DISCONNECT END
MATERIAL: ALUMINUM BODY
CONNECTION STYLE: FLARED FIRST QUICK DISCONNECT END
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
THREAD CLASS: 3A FIRST QUICK DISCONNECT END A
FEATURES PROVIDED: SELF-SEALING
BASIC SHAPE STYLE: ROUND MOUNTING FLANGE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF FIRST QUICK DISCONNECT END
MATERIALALUMINUM BODY
CONNECTION STYLEFLARED FIRST QUICK DISCONNECT END
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
THREAD CLASS3A FIRST QUICK DISCONNECT END A
FEATURES PROVIDEDSELF-SEALING
BASIC SHAPE STYLEROUND MOUNTING FLANGE
OVERALL LENGTH3.990 INCHES NOMINAL IN
BOLT HOLE QUANTITY6
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
157-4DInterchangeable
interchangeable cross-reference
interchangeable
MILC25427Interchangeable
interchangeable cross-reference
interchangeable
AS24333-X-12Interchangeable
interchangeable cross-reference
interchangeable
MS24333-A-12Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-25427/1Interchangeable
interchangeable cross-reference
interchangeable
AS25427Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILC25427?
MILC25427 is a COUPLING ASSEMBLY,QUICK DISCONNE.
What parts can replace MILC25427?
There are 17 known substitutes for MILC25427: 157-4D, MILC25427, AS24333-X-12 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILC25427?
MILC25427 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-564-2688. This indicates validated use in U.S. government and defense supply chains.
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