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R3903CC — ADAPTER,STRAIGHT,TUBE TO HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

R3903CC: ADAPTER,STRAIGHT,TUBE TO HOSE.

The ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thread_class: 3B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST END, connection_style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END, nominal_thread_size: 0.375 INCHES FIRST END IN, nominal_overall_length: 1.231 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-384-6406, 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
R3903CC
NSN: 4730-01-384-6406
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 50599 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV STRATOFLEX PRODUCT DIVISION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thread_class3B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_styleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
nominal_thread_size0.375 INCHES FIRST END IN
nominal_overall_length1.231 INCHES IN
thread_series_designatorUNF FIRST END
NSN4730-01-384-6406
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: R3903CC · 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: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
•
NOMINAL OVERALL LENGTH: 1.231 INCHES IN
•
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST END
•
NOMINAL THREAD SIZE: 0.375 INCHES FIRST END IN
•
THREAD CLASS: 3B FIRST END
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
THREAD SERIES DESIGNATOR: UNF FIRST END
TECHNICAL CHARACTERISTICS
CONNECTION STYLESWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
NOMINAL OVERALL LENGTH1.231 INCHES IN
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
NOMINAL THREAD SIZE0.375 INCHES FIRST END IN
THREAD CLASS3B FIRST END
MATERIALSTEEL CORROSION RESISTING OVERALL
THREAD SERIES DESIGNATORUNF FIRST END
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
R3903C-3Reference 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 R3903CC?
R3903CC is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace R3903CC?
There is 1 known substitute for R3903CC: R3903C-3. Substitute compatibility should be verified for your specific system.
What is the NSN for R3903CC?
R3903CC is cataloged in the U.S. Government catalog under NSN 4730-01-384-6406. 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.