PartsTable
Technical Data Sheet
6303378-002 ✓ 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 REDUCER,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, reducer_type: CONCENTRIC, connection_type: THREADED INTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, nominal_thread_size: 0.500 INCHES FIRST END IN, nominal_overall_length: 1.680 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-372-9700, 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
6303378-002
NSN: 4730-01-372-9700
FSC: 4730
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
reducer_typeCONCENTRIC
connection_typeTHREADED INTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
nominal_thread_size0.500 INCHES FIRST END IN
nominal_overall_length1.680 INCHES IN
thread_series_designatorNPTF ALL ENDS
NSN4730-01-372-9700
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6303378-002 · 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
CONNECTION STYLE: PLAIN (PIPE) SECOND END
NOMINAL OVERALL LENGTH: 1.680 INCHES IN
NOMINAL THREAD SIZE: 0.500 INCHES FIRST END IN
MATERIAL: STEEL CORROSION RESISTING OVERALL
CONNECTION TYPE: THREADED EXTERNAL PIPE SECOND END
REDUCER TYPE: CONCENTRIC
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEPLAIN (PIPE) SECOND END
NOMINAL OVERALL LENGTH1.680 INCHES IN
NOMINAL THREAD SIZE0.500 INCHES FIRST END IN
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
REDUCER TYPECONCENTRIC
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
THREAD SERIES DESIGNATORNPTF ALL ENDS
CONNECTION STYLEPLAIN (PIPE) FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
875291-00Interchangeable
interchangeable cross-reference
interchangeable
SS-6-RA-4Interchangeable
interchangeable cross-reference
interchangeable
123471-1Interchangeable
interchangeable cross-reference
interchangeable
8-6-140139SAInterchangeable
Same NIIN cross-reference
interchangeable
6303378Interchangeable
Same NIIN cross-reference
interchangeable
1/2 X 3/8FG-SSInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6303378-002?
6303378-002 is a REDUCER,PIPE.
What parts can replace 6303378-002?
There are 7 known substitutes for 6303378-002: 875291-00, SS-6-RA-4, 123471-1 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6303378-002?
6303378-002 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-372-9700. This indicates validated use in U.S. government and defense supply chains.
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