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Technical Data Sheet
PartsTable / COMPONENT / M52525/1-6-6J
M52525/1-6-6J ✓ 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 M52525/1-6-6J is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-455-8650, 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
M52525/1-6-6J
NSN: 4730-00-455-8650
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM52525/1-6-6J
NSN4730-00-455-8650
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M52525/1-6-6J · 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
•
NOMINAL THREAD SIZE: 0.562 INCHES FIRST END0.562 INCHES FIRST END IN
•
MAXIMUM OPERATING TEMP: 212.0 FAHRENHEIT SINGLE RESPONSE212.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
SPECIFICATION/STANDARD DATA: 81349-MIL-F-52525C GOVERNMENT SPECIFICATION
•
CONNECTION STYLE: GRIPPING NIPPLE (NOSE) SECOND ENDGRIPPING NIPPLE (NOSE) SECOND END
•
THREAD SERIES DESIGNATOR: UNF FIRST END
•
NOMINAL OVERALL LENGTH: 3.160 INCHES IN
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.844 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.562 INCHES FIRST END0.562 INCHES FIRST END IN
END ITEM IDENTIFICATION3930-00-327-15753930-00-327-1575
MAXIMUM OPERATING TEMP212.0 FAHRENHEIT SINGLE RESPONSE212.0 FAHRENHEIT SINGLE RESPONSE DEGF
SPECIFICATION/STANDARD DATA81349-MIL-F-52525C GOVERNMENT SPECIFICATION
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND ENDGRIPPING NIPPLE (NOSE) SECOND END
THREAD SERIES DESIGNATORUNF FIRST END
NOMINAL OVERALL LENGTH3.160 INCHES IN
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.844 INCHES SECOND END IN
NONDEFINITIVE SPEC/STD DATAB TYPE
SEAT ANGLE37.0 DEGREES FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
4721-6-6SInterchangeable
interchangeable cross-reference
interchangeable
100088R91Interchangeable
interchangeable cross-reference
interchangeable
712293Interchangeable
interchangeable cross-reference
interchangeable
47216X1U9Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-52525/1Interchangeable
interchangeable cross-reference
interchangeable
MS39290-8-8BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M52525/1-6-6J?
M52525/1-6-6J is a M52525/1-6-6J.
What parts can replace M52525/1-6-6J?
There are 24 known substitutes for M52525/1-6-6J: 4721-6-6S, 100088R91, 712293 and 21 more. Substitute compatibility should be verified for your specific system.
Is M52525/1-6-6J still available?
M52525/1-6-6J 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