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Technical Data Sheet

504090-2 1/2D — COUPLING,HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

504090-2 1/2D: COUPLING,HOSE.

The COUPLING,HOSE is a the manufacturer industrial component. Key specifications include material: ALUMINUM OVERALL, connection_type: UNTHREADED EXTERNAL HOSE ALL ENDS, connection_style: GROOVED (HOSE) ALL ENDS, nominal_overall_length: 10.500 INCHES IN, nominal_inside_diameter_hose_accommodated: 2.500 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-105-9486, 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
504090-2 1/2D
NSN: 4730-01-105-9486
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 7H596 — GLOBAL INCORPORATED (USA)
SPECIFICATIONS
materialALUMINUM OVERALL
connection_typeUNTHREADED EXTERNAL HOSE ALL ENDS
connection_styleGROOVED (HOSE) ALL ENDS
nominal_overall_length10.500 INCHES IN
nominal_inside_diameter_hose_accommodated2.500 INCHES ALL ENDS IN
NSN4730-01-105-9486
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 504090-2 1/2D · 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 STYLE: GROOVED (HOSE) ALL ENDS
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 2.500 INCHES ALL ENDS IN
•
NOMINAL OVERALL LENGTH: 10.500 INCHES IN
•
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE ALL ENDS
•
MATERIAL: ALUMINUM OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION STYLEGROOVED (HOSE) ALL ENDS
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED2.500 INCHES ALL ENDS IN
NOMINAL OVERALL LENGTH10.500 INCHES IN
CONNECTION TYPEUNTHREADED EXTERNAL HOSE ALL ENDS
MATERIALALUMINUM OVERALL
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
A-FIT/RL-25-FLTReference 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 504090-2 1/2D?
504090-2 1/2D is a COUPLING,HOSE.
What parts can replace 504090-2 1/2D?
There is 1 known substitute for 504090-2 1/2D: A-FIT/RL-25-FLT. Substitute compatibility should be verified for your specific system.
What is the NSN for 504090-2 1/2D?
504090-2 1/2D is cataloged in the U.S. Government catalog under NSN 4730-01-105-9486. 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.