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NY-503-1 — SLEEVE,COMPRESSION,TUBE-HOSE FIT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

NY-503-1: SLEEVE,COMPRESSION,TUBE-HOSE FIT.

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: PLASTIC POLYAMIDE NYLON, overall_length: 0.188 INCHES NOMINAL IN, style_designator: TAPERED, casehardening_indicator: NOT CASEHARDENED, hose/tube_outside_diameter_for_which_designed: 0.312 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-128-2425, 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
NY-503-1
NSN: 4730-01-128-2425
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 3T9T9 — SWAGELOK CO (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
overall_length0.188 INCHES NOMINAL IN
style_designatorTAPERED
casehardening_indicatorNOT CASEHARDENED
hose/tube_outside_diameter_for_which_designed0.312 INCHES NOMINAL IN
NSN4730-01-128-2425
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: NY-503-1 · 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
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: PLASTIC POLYAMIDE NYLON
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORTAPERED
OVERALL LENGTH0.188 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIALPLASTIC POLYAMIDE NYLON
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.312 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 NY-503-1?
NY-503-1 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What is the NSN for NY-503-1?
NY-503-1 is cataloged in the U.S. Government catalog under NSN 4730-01-128-2425. 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.