PartsTable
Technical Data Sheet
FN03-04NB ✓ 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 ADAPTER,STRAIGHT,PIPE TO HOSE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: THREADED INTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, nominal_thread_size: 0.250 INCHES FIRST END IN, nominal_overall_length: 1.218 INCHES IN, thread_series_designator: NPTF FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-203-2984, 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
FN03-04NB
NSN: 4730-00-203-2984
FSC: 4730
CAGE: 30327 — IMPERIAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeTHREADED INTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
nominal_thread_size0.250 INCHES FIRST END IN
nominal_overall_length1.218 INCHES IN
thread_series_designatorNPTF FIRST END
furnished_items_and_quantity1 SHORT COUPLING NUT WITH SLEEVE
nominal_inside_diameter_hose_accommodated0.187 INCHES SECOND END IN
NSN4730-00-203-2984
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: FN03-04NB · 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
NOMINAL OVERALL LENGTH: 1.218 INCHES IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.187 INCHES SECOND END IN
NOMINAL THREAD SIZE: 0.250 INCHES FIRST END IN
MATERIAL: COPPER ALLOY OVERALL
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
FURNISHED ITEMS AND QUANTITY: 1 SHORT COUPLING NUT WITH SLEEVE
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OVERALL LENGTH1.218 INCHES IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.187 INCHES SECOND END IN
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
MATERIALCOPPER ALLOY OVERALL
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
NOMINAL OVERALL LENGTH1.218 INCHES IN
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
FURNISHED ITEMS AND QUANTITY1 SHORT COUPLING NUT WITH SLEEVE
THREAD SERIES DESIGNATORNPTF FIRST END
FURNISHED ITEMS AND QUANTITY1 SHORT COUPLING NUT WITH SLEEVE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
045043EAInterchangeable
interchangeable cross-reference
interchangeable
4504-0,EUInterchangeable
interchangeable cross-reference
interchangeable
045040EAInterchangeable
interchangeable cross-reference
interchangeable
A4363 ITEM NO. 3Interchangeable
interchangeable cross-reference
interchangeable
A4504Interchangeable
interchangeable cross-reference
interchangeable
242-0062Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FN03-04NB?
FN03-04NB is a ADAPTER,STRAIGHT,PIPE TO HOSE.
What parts can replace FN03-04NB?
There are 8 known substitutes for FN03-04NB: 045043EA, 4504-0,EU, 045040EA and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FN03-04NB?
FN03-04NB is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-203-2984. This indicates validated use in U.S. government and defense supply chains.
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