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RF4148 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

RF4148: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM OVERALL, nominal_length: 3.000 INCHES ALL ENDS IN, special_features: TUBE CONNECTS TWO HOSES, end_item_identification: F-22 RAPTOR AIRCRAFT, nominal_outside_diameter: 3.000 INCHES ALL ENDS IN, part_name_assigned_by_controlling_agency: COUPLING,TUBE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-549-4460, 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
RF4148
NSN: 4730-01-549-4460
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 2Y283 — R.G.H. ASSOCIATES, INC. DBA RICHARDS SCREW MACHINE (USA)
SPECIFICATIONS
materialALUMINUM OVERALL
nominal_length3.000 INCHES ALL ENDS IN
special_featuresTUBE CONNECTS TWO HOSES
end_item_identificationF-22 RAPTOR AIRCRAFT
nominal_outside_diameter3.000 INCHES ALL ENDS IN
part_name_assigned_by_controlling_agencyCOUPLING,TUBE
NSN4730-01-549-4460
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: RF4148 · 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 LENGTH: 3.000 INCHES ALL ENDS IN
•
NOMINAL OUTSIDE DIAMETER: 3.000 INCHES ALL ENDS IN
•
MATERIAL: ALUMINUM OVERALL
TECHNICAL CHARACTERISTICS
NOMINAL LENGTH3.000 INCHES ALL ENDS IN
NOMINAL OUTSIDE DIAMETER3.000 INCHES ALL ENDS IN
SPECIAL FEATURESTUBE CONNECTS TWO HOSES
PART NAME ASSIGNED BY CONTROLLING AGENCYCOUPLING,TUBE
END ITEM IDENTIFICATIONF-22 RAPTOR AIRCRAFT
MATERIALALUMINUM OVERALL
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RF4148?
RF4148 is a COUPLING,TUBE.
What is the NSN for RF4148?
RF4148 is cataloged in the U.S. Government catalog under NSN 4730-01-549-4460. 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.