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504259 — SLEEVE,COMPRESSION,TUBE-HOSE FIT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

504259: SLEEVE,COMPRESSION,TUBE-HOSE FIT.

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: COPPER ALLOY OVERALL, nut_style: TUBE COUPLING, nut_height: 1.000 INCHES NOMINAL IN, seat_angle: 20.00 DEGREES NOMINAL, thread_series: UNS, special_features: INTERCOM FILTER ELEMENT. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-278-8825, 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
504259
NSN: 4730-00-278-8825
NIINs: 002788825, 014379398
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleTUBE COUPLING
nut_height1.000 INCHES NOMINAL IN
seat_angle20.00 DEGREES NOMINAL
thread_seriesUNS
special_featuresINTERCOM FILTER ELEMENT
thread_directionRIGHT-HAND
fabrication_methodMACHINED
width_across_flats0.625 INCHES NOMINAL IN
nominal_thread_size0.513 INCHES IN
thread_pitch_diameters+0.5041 TO 0.5092 INCHES IN
smallest_inside_diameter0.382 INCHES NOMINAL IN
NSN4730-00-278-8825
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 504259 · 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
•
WIDTH ACROSS FLATS: 0.625 INCHES NOMINAL IN
•
THREAD SERIES: UNS
•
THREAD PITCH DIAMETERS: +0.5041 TO 0.5092 INCHES IN
•
SEAT ANGLE: 20.00 DEGREES NOMINAL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.513 INCHES IN
•
SPECIFICATION/STANDARD DATA: 81343-J246 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
NONDEFINITIVE SPEC/STD DATA: 5 FIGURE
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
THREAD SERIESUNS
THREAD PITCH DIAMETERS+0.5041 TO 0.5092 INCHES IN
SEAT ANGLE20.00 DEGREES NOMINAL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.513 INCHES IN
SPECIFICATION/STANDARD DATA81343-J246 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATA5 FIGURE
NUT HEIGHT1.000 INCHES NOMINAL IN
SPECIAL FEATURESSUPPORTS HARNISCHFEGER CORP.;MODEL M320T2,CRANE TRUCK MOUNTED,NSN 3810-00-151-4431
SUBSTITUTES & CROSS-REFERENCES 8
J246Reference document
Same NSN cross-reference
Reference document — Secondary reference
200360Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS39196-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE J246 6 120111BReference document
Same NSN cross-reference
Reference document — Secondary reference
AC2562Reference document
Same NSN cross-reference
Reference document — Secondary reference
2046137Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 504259?
504259 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 504259?
There are 8 known substitutes for 504259: J246, 200360, MS39196-3 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 504259?
504259 is cataloged in the U.S. Government catalog under NSN 4730-00-278-8825. This indicates validated use in U.S. government and defense supply chains.
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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.