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803-6983468-PC155 — TAILPIECE,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

803-6983468-PC155: TAILPIECE,UNION.

The TAILPIECE,UNION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 715, seat_type: STRAIGHT FACE, overall_length: 0.959 INCHES NOMINAL IN, end_connection_type: WELDED, union_outside_diameter: 1.135 INCHES NOMINAL IN, end_item_identification: FIRE FIGHTING EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-421-5291, 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
803-6983468-PC155
NSN: 4730-01-421-5291
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY 715
seat_typeSTRAIGHT FACE
overall_length0.959 INCHES NOMINAL IN
end_connection_typeWELDED
union_outside_diameter1.135 INCHES NOMINAL IN
end_item_identificationFIRE FIGHTING EQUIPMENT
nominal_pipe_size_designation0.375 INCHES IN
working_pressure_and_service_type250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER LBS
NSN4730-01-421-5291
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 803-6983468-PC155 · 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: 1.135 INCHES NOMINAL IN
•
NOMINAL PIPE SIZE DESIGNATION: 0.375 INCHES IN
•
END CONNECTION TYPE: WELDED
•
SEAT TYPE: STRAIGHT FACE
•
MATERIAL: COPPER ALLOY 715
•
WORKING PRESSURE AND SERVICE TYPE: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER LBS
TECHNICAL CHARACTERISTICS
UNION OUTSIDE DIAMETER1.135 INCHES NOMINAL IN
NOMINAL PIPE SIZE DESIGNATION0.375 INCHES IN
END CONNECTION TYPEWELDED
OVERALL LENGTH0.959 INCHES NOMINAL IN
SEAT TYPESTRAIGHT FACE
END ITEM IDENTIFICATIONFIRE FIGHTING EQUIPMENT
MATERIALCOPPER ALLOY 715
WORKING PRESSURE AND SERVICE TYPE250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER LBS
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 1
6983468Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 803-6983468-PC155?
803-6983468-PC155 is a TAILPIECE,UNION.
What parts can replace 803-6983468-PC155?
There is 1 known substitute for 803-6983468-PC155: 6983468. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-6983468-PC155?
803-6983468-PC155 is cataloged in the U.S. Government catalog under NSN 4730-01-421-5291. 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.