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2056909 — SLEEVE,COMPRESSION,TUBE-HOSE FIT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2056909: SLEEVE,COMPRESSION,TUBE-HOSE FIT.

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: STEEL, surface_treatment: NICKEL, hose/tube_outside_diameter_for_which_designed: 0.707 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-435-9484, 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
2056909
NSN: 4730-00-435-9484
NIINs: 004359484, 007398227
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL
surface_treatmentNICKEL
hose/tube_outside_diameter_for_which_designed0.707 INCHES NOMINAL IN
NSN4730-00-435-9484
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2056909 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5553 ASSN STD SINGLE MATERIAL RESPONSE
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: NICKEL ALLOY 201
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5553 ASSN STD SINGLE MATERIAL RESPONSE
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIALNICKEL ALLOY 201
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 8
4730PL1845752Reference document
Same NSN cross-reference
Reference document — Informative reference only
AS3075-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
4730PL0890366Reference document
Same NSN cross-reference
Reference document — Informative reference only
AS4824N12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST2285-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST2284-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2056909?
2056909 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 2056909?
There are 8 known substitutes for 2056909: 4730PL1845752, AS3075-12, 4730PL0890366 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2056909?
2056909 is cataloged in the U.S. Government catalog under NSN 4730-00-435-9484. 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.