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426303 — FERRULE,BRAZING,TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

426303: FERRULE,BRAZING,TUBE FITTING.

The FERRULE,BRAZING,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321, overall_length: 0.185 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN, seat_angle_in_deg: 65.0, surface_treatment: PASSIVATE, casehardening_indicator: NOT CASEHARDENED, flange_outside_diameter: 0.718 INCHES MINIMUM AND 0.728 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-885-9367, 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
426303
NSN: 4730-00-885-9367
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 321
overall_length0.185 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
seat_angle_in_deg65.0
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter0.718 INCHES MINIMUM AND 0.728 INCHES MAXIMUM IN
sleeve_outside_diameter0.506 INCHES MINIMUM AND 0.538 INCHES MAXIMUM IN
hose/tube_outside_diameter_for_which_designed0.500 INCHES NOMINAL IN
NSN4730-00-885-9367
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 426303 · 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: 65.0
•
SLEEVE OUTSIDE DIAMETER: 0.506 INCHES MINIMUM AND 0.538 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
SURFACE TREATMENT: PASSIVATE
•
MATERIAL: STEEL COMP 321
•
FLANGE OUTSIDE DIAMETER: 0.718 INCHES MINIMUM AND 0.728 INCHES MAXIMUM IN
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG65.0
OVERALL LENGTH0.185 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
SLEEVE OUTSIDE DIAMETER0.506 INCHES MINIMUM AND 0.538 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL COMP 321
FLANGE OUTSIDE DIAMETER0.718 INCHES MINIMUM AND 0.728 INCHES MAXIMUM IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.500 INCHES NOMINAL 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 426303?
426303 is a FERRULE,BRAZING,TUBE FITTING.
What is the NSN for 426303?
426303 is cataloged in the U.S. Government catalog under NSN 4730-00-885-9367. 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.