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Technical Data Sheet
PartsTable / COMPONENT / MIL-C-25427A
MIL-C-25427A ✓ 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 BODY, seat_angle: 37.0 DEGREES, thread_class: 3A FIRST QUICK DISCONNECT END A, overall_length: 4.659 INCHES NOMINAL IN, connection_type: THREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END, connection_style: FLARED FIRST QUICK DISCONNECT END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-684-4718, 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
MIL-C-25427A
NSN: 4730-00-684-4718
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY BODY
seat_angle37.0 DEGREES
thread_class3A FIRST QUICK DISCONNECT END A
overall_length4.659 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
connection_styleFLARED FIRST QUICK DISCONNECT END
special_featuresANODIZED BLUE AND ORANGE
style_designatorCOUPLING ASSEMBLY
features_providedSELF-SEALING
surface_treatmentANODIZE BODY
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size1.312 INCHES FIRST QUICK DISCONNECT END IN
NSN4730-00-684-4718
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-C-25427A · 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
•
CONNECTION STYLE: FLARED FIRST QUICK DISCONNECT END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST QUICK DISCONNECT END IN
•
SURFACE TREATMENT: ANODIZE BODY
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY
•
MATERIAL: ALUMINUM ALLOY BODY
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SEAT ANGLE: 37.0 DEGREES
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH4.659 INCHES NOMINAL IN
CONNECTION STYLEFLARED FIRST QUICK DISCONNECT END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST QUICK DISCONNECT END IN
SURFACE TREATMENTANODIZE BODY
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY
MATERIALALUMINUM ALLOY BODY
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SEAT ANGLE37.0 DEGREES
STYLE DESIGNATORCOUPLING ASSEMBLY
NOMINAL THREAD SIZE1.312 INCHES FIRST QUICK DISCONNECT END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
16704845Interchangeable
interchangeable cross-reference
interchangeable
32008Interchangeable
interchangeable cross-reference
interchangeable
65051Interchangeable
interchangeable cross-reference
interchangeable
MIL-E-16366Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-16366Interchangeable
interchangeable cross-reference
interchangeable
3200C8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-C-25427A?
MIL-C-25427A is a COUPLING ASSEMBLY,QUICK DISCONNE.
What parts can replace MIL-C-25427A?
There are 22 known substitutes for MIL-C-25427A: 16704845, 32008, 65051 and 19 more. Substitute compatibility should be verified for your specific system.
Is MIL-C-25427A still available?
MIL-C-25427A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026