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439-1809 — SLEEVE,COMPRESSION,TUBE-HOSE FIT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

439-1809: SLEEVE,COMPRESSION,TUBE-HOSE FIT.

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include overall_length: 9.5 MILLIMETERS NOMINAL MM, style_designator: TAPERED, hose/tube_outside_diameter_for_which_designed: 8.0 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-240-6819, 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
439-1809
NSN: 4730-01-240-6819
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
overall_length9.5 MILLIMETERS NOMINAL MM
style_designatorTAPERED
hose/tube_outside_diameter_for_which_designed8.0 MILLIMETERS NOMINAL MM
NSN4730-01-240-6819
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 439-1809 · 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
•
STYLE DESIGNATOR: TAPERED
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 8.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORTAPERED
OVERALL LENGTH9.5 MILLIMETERS NOMINAL MM
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED8.0 MILLIMETERS NOMINAL MM
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 3
91831-00080Reference document
Same NSN cross-reference
Reference document — Secondary reference
003861 008004Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3861 D 8L NP250Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 439-1809?
439-1809 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 439-1809?
There are 3 known substitutes for 439-1809: 91831-00080, 003861 008004, 3861 D 8L NP250. Substitute compatibility should be verified for your specific system.
What is the NSN for 439-1809?
439-1809 is cataloged in the U.S. Government catalog under NSN 4730-01-240-6819. 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.