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Technical Data Sheet
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504309 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: PLASTIC PANEL, indicator_type: LIGHT LOCATION NOT OTHERWISE SPECIFIED, overall_height: 2.200 INCHES NOMINAL IN, overall_length: 4.861 INCHES NOMINAL IN, special_markings: ANTI-SKID TEST; FWD; AFT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-050-4309, 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
504309
NSN: 4730-00-050-4309
FSC: 4730
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialPLASTIC PANEL
indicator_typeLIGHT LOCATION NOT OTHERWISE SPECIFIED
overall_height2.200 INCHES NOMINAL IN
overall_length4.861 INCHES NOMINAL IN
special_markingsANTI-SKID TEST; FWD; AFT
NSN4730-00-050-4309
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 504309 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES: UNS
•
NUT STYLE: TUBE COUPLING
•
NUT HEIGHT: 1.500 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
•
SMALLEST INSIDE DIAMETER: 0.758 INCHES NOMINAL IN
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.750 INCHES IN
•
NONDEFINITIVE SPEC/STD DATA: 5 FIGURE
•
LENGTH TO SHOULDER: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNS
NUT STYLETUBE COUPLING
NUT HEIGHT1.500 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN
SMALLEST INSIDE DIAMETER0.758 INCHES NOMINAL IN
NOMINAL TUBE OUTSIDE DIAMETER0.750 INCHES IN
NONDEFINITIVE SPEC/STD DATA5 FIGURE
LENGTH TO SHOULDER0.750 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 360 OVERALL
SPECIFICATION/STANDARD DATA81343-J246 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
5-04309Interchangeable
interchangeable cross-reference
interchangeable
3341435-1Interchangeable
interchangeable cross-reference
interchangeable
J246Interchangeable
Same NIIN cross-reference
interchangeable
MS39196-6Interchangeable
Same NIIN cross-reference
interchangeable
4730000573118Interchangeable
Same NIIN cross-reference
interchangeable
12 120111BInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 504309?
504309 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 504309?
There are 7 known substitutes for 504309: 5-04309, 3341435-1, J246 and 4 more. Substitute compatibility should be verified for your specific system.
Is 504309 still available?
504309 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026