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PartsTable / COMPONENT / 660-F-04
660-F-04 ✓ 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 COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, seat_angle: 37.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_type: THREADED INTERNAL TUBE ALL ENDS, connection_style: FLARED (TUBE) ALL ENDS, style_designator: RIGID, LONG CENTER WRENCHING FACILITY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-811-6154, 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
660-F-04
NSN: 4730-00-811-6154
FSC: 4730
CAGE: 30327 — IMPERIAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
seat_angle37.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_typeTHREADED INTERNAL TUBE ALL ENDS
connection_styleFLARED (TUBE) ALL ENDS
style_designatorRIGID, LONG CENTER WRENCHING FACILITY
nominal_thread_size0.438 INCHES ALL ENDS IN
nominal_overall_length1.062 INCHES IN
thread_series_designatorUNF ALL ENDS
nominal_outside_diameter_tube_accommodated0.250 INCHES ALL ENDS IN
NSN4730-00-811-6154
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 660-F-04 · 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 CLASS: 3A ALL ENDS A
•
MATERIAL: COPPER ALLOY OVERALL
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
•
SEAT ANGLE: 37.0 DEGREES ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.062 INCHES IN
•
CONNECTION STYLE: FLARED (TUBE) ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
CONNECTION TYPE: THREADED INTERNAL TUBE ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A ALL ENDS A
MATERIALCOPPER ALLOY OVERALL
THREAD SERIES DESIGNATORUNF ALL ENDS
SEAT ANGLE37.0 DEGREES ALL ENDS
NOMINAL OVERALL LENGTH1.062 INCHES IN
CONNECTION STYLEFLARED (TUBE) ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
CONNECTION TYPETHREADED INTERNAL TUBE ALL ENDS
STYLE DESIGNATORRIGID, LONG CENTER WRENCHING FACILITY
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
SAE J513 4-4 010107Interchangeable
interchangeable cross-reference
interchangeable
A-385Interchangeable
interchangeable cross-reference
interchangeable
448-1-4Interchangeable
interchangeable cross-reference
interchangeable
202692C1Interchangeable
Same NIIN cross-reference
interchangeable
660FHD-4Interchangeable
Same NIIN cross-reference
interchangeable
907876Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 660-F-04?
660-F-04 is a COUPLING,TUBE.
What parts can replace 660-F-04?
There are 7 known substitutes for 660-F-04: SAE J513 4-4 010107, A-385, 448-1-4 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 660-F-04?
660-F-04 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-811-6154. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026