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AS4099-04 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AS4099-04: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R54520 OVERALL, connection_type: THREADED EXTERNAL TUBE ALL ENDS, end_item_identification: F-22, thread_series_designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS, part_name_assigned_by_controlling_agency: ADAPTER, FLUID CONN, nominal_outside_diameter_tube_accommodated: 0.250 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-490-4820, 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
AS4099-04
NSN: 4730-01-490-4820
NIINs: 014904820, 017057349
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R54520 OVERALL
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
end_item_identificationF-22
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
part_name_assigned_by_controlling_agencyADAPTER, FLUID CONN
nominal_outside_diameter_tube_accommodated0.250 INCHES ALL ENDS IN
NSN4730-01-490-4820
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS4099-04 · 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
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
MATERIAL: TITANIUM ALLOY UNS R54520 OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
TECHNICAL CHARACTERISTICS
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
PART NAME ASSIGNED BY CONTROLLING AGENCYADAPTER, FLUID CONN
END ITEM IDENTIFICATIONF-22 RAPTOR
MATERIALTITANIUM ALLOY UNS R54520 OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 2
AS4099Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS18280Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS4099-04?
AS4099-04 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace AS4099-04?
There are 2 known substitutes for AS4099-04: AS4099, AS18280. Substitute compatibility should be verified for your specific system.
What is the NSN for AS4099-04?
AS4099-04 is cataloged in the U.S. Government catalog under NSN 4730-01-490-4820. 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.