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6303498-001 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6303498-001: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, seat_angle: 20.0 DEGREES FIRST END, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END, nominal_thread_size: 0.750 INCHES SECOND END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-373-0099, 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
6303498-001
NSN: 4730-01-373-0099
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
seat_angle20.0 DEGREES FIRST END
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
nominal_thread_size0.750 INCHES SECOND END IN
nominal_overall_length1.540 INCHES IN
thread_series_designatorUNF ALL ENDS
furnished_items_and_quantity2 FERRULE SLEEVE AND 1 TUBE COUPLING NUT AND 1 PREFORMED PACKING
nominal_outside_diameter_tube_accommodated0.375 INCHES FIRST END IN
NSN4730-01-373-0099
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6303498-001 · 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 FERRULE SLEEVE AND 1 TUBE COUPLING NUT AND 1 PREFORMED PACKING
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 1.540 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.750 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 FERRULE SLEEVE AND 1 TUBE COUPLING NUT AND 1 PREFORMED PACKING
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEFLARELESS (TUBE) FIRST END
NOMINAL OVERALL LENGTH1.540 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES FIRST END IN
NOMINAL THREAD SIZE0.750 INCHES SECOND END IN
NOMINAL THREAD SIZE0.562 INCHES FIRST END IN
SEAT ANGLE20.0 DEGREES FIRST END
SUBSTITUTES & CROSS-REFERENCES 1
6303498Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6303498-001?
6303498-001 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 6303498-001?
There is 1 known substitute for 6303498-001: 6303498. Substitute compatibility should be verified for your specific system.
What is the NSN for 6303498-001?
6303498-001 is cataloged in the U.S. Government catalog under NSN 4730-01-373-0099. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.