PartsTable
Technical Data Sheet
Download PDF

660FU4-6 — SEMICONDUCTOR DEVICE,DIODE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

660FU4-6: SEMICONDUCTOR DEVICE,DIODE.

The SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, seat_angle: 45.0 DEGREES ALL ENDS, thread_class: 2B ALL ENDS, connection_type: THREADED INTERNAL TUBE ALL ENDS, connection_style: FLARED (TUBE) ALL ENDS, style_designator: RIGID, LONG CENTER WRENCHING FACILITY. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-384-0383, 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
660FU4-6
NSN: 4730-00-384-0383
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30327 — IMPERIAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
seat_angle45.0 DEGREES ALL ENDS
thread_class2B ALL ENDS
connection_typeTHREADED INTERNAL TUBE ALL ENDS
connection_styleFLARED (TUBE) ALL ENDS
style_designatorRIGID, LONG CENTER WRENCHING FACILITY
nominal_thread_size0.625 INCHES ALL ENDS IN
nominal_overall_length1.250 INCHES IN
thread_series_designatorUNF ALL ENDS
furnished_items_and_quantity2 GASKET
nominal_outside_diameter_tube_accommodated0.375 INCHES ALL ENDS IN
NSN4730-00-384-0383
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 660FU4-6 · 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
•
FURNISHED ITEMS AND QUANTITY: 2 GASKET
•
CONNECTION STYLE: FLARED (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.250 INCHES IN
•
CONNECTION TYPE: THREADED INTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: RIGID, LONG CENTER WRENCHING FACILITY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.625 INCHES ALL ENDS IN
•
SEAT ANGLE: 45.0 DEGREES ALL ENDS
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 GASKET
CONNECTION STYLEFLARED (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH1.250 INCHES IN
CONNECTION TYPETHREADED INTERNAL TUBE ALL ENDS
STYLE DESIGNATORRIGID, LONG CENTER WRENCHING FACILITY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.625 INCHES ALL ENDS IN
SEAT ANGLE45.0 DEGREES ALL ENDS
THREAD CLASS2B ALL ENDS
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
U4-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
162QReference document
Same NSN cross-reference
Reference document — Secondary reference
660F3-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
203Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 660FU4-6?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 660FU4-6?
660FU4-6 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 660FU4-6?
There are 4 known substitutes for 660FU4-6: U4-6, 162Q, 660F3-8 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 660FU4-6?
660FU4-6 is cataloged in the U.S. Government catalog under NSN 4730-00-384-0383. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 660FU4-6

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.