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2A3349 — SLEEVE,COMPRESSION,TUBE-HOSE FIT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2A3349: SLEEVE,COMPRESSION,TUBE-HOSE FIT.

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: STEEL, overall_length: 0.750 INCHES NOMINAL IN, style_designator: DOUBLE BEVEL FLARELESS, seat_angle_in_deg: 45.000, casehardening_indicator: NOT CASEHARDENED, sleeve_outside_diameter: 0.307 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-423-8591, 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
2A3349
NSN: 4730-00-423-8591
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
overall_length0.750 INCHES NOMINAL IN
style_designatorDOUBLE BEVEL FLARELESS
seat_angle_in_deg45.000
casehardening_indicatorNOT CASEHARDENED
sleeve_outside_diameter0.307 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
hose/tube_outside_diameter_for_which_designed0.251 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
NSN4730-00-423-8591
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2A3349 · 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
•
SEAT ANGLE IN DEG: 45.000
•
STYLE DESIGNATOR: DOUBLE BEVEL FLARELESS
•
SLEEVE OUTSIDE DIAMETER: 0.307 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: STEEL
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.251 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG45.000
STYLE DESIGNATORDOUBLE BEVEL FLARELESS
OVERALL LENGTH0.750 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER0.307 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIALSTEEL
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.251 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2A3349?
2A3349 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What is the NSN for 2A3349?
2A3349 is cataloged in the U.S. Government catalog under NSN 4730-00-423-8591. 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.