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Technical Data Sheet
PartsTable / COMPONENT / 504 3/4
504 3/4 ✓ 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

The 504 3/4 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-282-5070, 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
504 3/4
NSN: 4730-01-282-5070
FSC: 4730
CAGE: 12168 — NIBCO INC (USA)
SPECIFICATIONS
Part Number504 3/4
NSN4730-01-282-5070
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 504 3/4 · 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 SERIES DESIGNATOR: NPT SECOND END
•
CONNECTION TYPE: THREADED EXTERNAL PIPE SECOND END
•
MATERIAL: COPPER ALLOY OVERALL
•
NOMINAL OVERALL LENGTH: 2.688 INCHES IN
•
CONNECTION STYLE: PLAIN (PIPE) SECOND END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.750 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.750 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
MATERIALCOPPER ALLOY OVERALL
NOMINAL OVERALL LENGTH2.688 INCHES IN
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES FIRST END IN
NOMINAL THREAD SIZE0.750 INCHES SECOND END IN
FURNISHED ITEMS AND QUANTITY1 TUBE COUPLING NUT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
50434Interchangeable
interchangeable cross-reference
interchangeable
5330Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751 TYBCL1Interchangeable
interchangeable cross-reference
interchangeable
50441Interchangeable
interchangeable cross-reference
interchangeable
97-6Interchangeable
interchangeable cross-reference
interchangeable
25057Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 504 3/4?
504 3/4 is a 504 3/4.
What parts can replace 504 3/4?
There are 20 known substitutes for 504 3/4: 50434, 5330, GGG-D-751 TYBCL1 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 504 3/4?
504 3/4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-282-5070. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026