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803-1385943 — TAILPIECE,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

803-1385943: TAILPIECE,UNION.

The TAILPIECE,UNION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, seat_type: GASKET, overall_length: 1.125 INCHES NOMINAL IN, end_connection_type: BRAZED, union_outside_diameter: 1.625 INCHES NOMINAL IN, nominal_pipe_size_designation: 0.500 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-216-4589, 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
803-1385943
NSN: 4730-01-216-4589
NIINs: 012164589, 012170323, 013794971
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY
seat_typeGASKET
overall_length1.125 INCHES NOMINAL IN
end_connection_typeBRAZED
union_outside_diameter1.625 INCHES NOMINAL IN
nominal_pipe_size_designation0.500 INCHES IN
working_pressure_and_service_type3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AIR LBS
NSN4730-01-216-4589
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 803-1385943 · 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
•
UNION OUTSIDE DIAMETER: 0.906 INCHES NOMINAL IN
•
NOMINAL PIPE SIZE DESIGNATION: 0.125 INCHES IN
•
END CONNECTION TYPE: BRAZED
•
SEAT TYPE: GASKET
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
UNION OUTSIDE DIAMETER0.906 INCHES NOMINAL IN
NOMINAL PIPE SIZE DESIGNATION0.125 INCHES IN
END CONNECTION TYPEBRAZED
OVERALL LENGTH0.938 INCHES NOMINAL IN
SEAT TYPEGASKET
MATERIALCOPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 1
810-1385943 PIECE 3-1/8INReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 803-1385943?
803-1385943 is a TAILPIECE,UNION.
What parts can replace 803-1385943?
There is 1 known substitute for 803-1385943: 810-1385943 PIECE 3-1/8IN. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-1385943?
803-1385943 is cataloged in the U.S. Government catalog under NSN 4730-01-216-4589. 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.