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PartsTable / COMPONENT / MIL-DTL-25677/3
MIL-DTL-25677/3 ✓ 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

The MIL-DTL-25677/3 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-600-1758, 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-DTL-25677/3
NSN: 4730-00-600-1758
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-DTL-25677/3
NSN4730-00-600-1758
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-DTL-25677/3 · 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 TYPE: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
•
LEG LENGTH: 0.750 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
•
MATING END IDENTIFICATION: ROYLYN INC. COUPLING HALF,QUICK DISCONNECT,PART NO.8695
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.625 INCHES ALL ENDS IN
•
THREAD CLASS: 3A ALL ENDS A
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
LEG LENGTH0.750 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF ALL ENDS
MATING END IDENTIFICATIONROYLYN INC. COUPLING HALF,QUICK DISCONNECT,PART NO.8695
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.625 INCHES ALL ENDS IN
OVERALL LENGTH3.000 INCHES NOMINAL IN
THREAD CLASS3A ALL ENDS A
END ITEM IDENTIFICATIONUSED ON F-16 AIRCRAFT
SPECIAL FEATURESGRIMMAN CORP,A-10 AIRCRAFT
FEATURES PROVIDEDSAFETY LOCKING FEATURE AND SELF-SEALING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
MS24475-2Interchangeable
interchangeable cross-reference
interchangeable
58A72B12Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-25677/3Interchangeable
interchangeable cross-reference
interchangeable
810736-1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-25677/1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-25677Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-25677/3?
MIL-DTL-25677/3 is a MIL-DTL-25677/3.
What parts can replace MIL-DTL-25677/3?
There are 13 known substitutes for MIL-DTL-25677/3: MS24475-2, 58A72B12, MIL-DTL-25677/3 and 10 more. Substitute compatibility should be verified for your specific system.
Is MIL-DTL-25677/3 still available?
MIL-DTL-25677/3 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