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R803-48D — NUT ASSEMBLY,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

R803-48D: NUT ASSEMBLY,TUBE COUPLING.

The NUT ASSEMBLY,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, overall_length: 1.229 INCHES NOMINAL IN, outside_diameter: 4.020 INCHES NOMINAL IN, style_designator: NUT ASSEMBLY, surface_treatment: ANODIZE, tube_outside_diameter_for_which_designed: 3.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-176-3008, 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
R803-48D
NSN: 4730-01-176-3008
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79326 — TRANSDIGM INC DIV ADELWIGGINS GROUP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
overall_length1.229 INCHES NOMINAL IN
outside_diameter4.020 INCHES NOMINAL IN
style_designatorNUT ASSEMBLY
surface_treatmentANODIZE
tube_outside_diameter_for_which_designed3.000 INCHES NOMINAL IN
NSN4730-01-176-3008
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: R803-48D · 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 3.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NUT ASSEMBLY
•
OUTSIDE DIAMETER: 4.020 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED3.000 INCHES NOMINAL IN
STYLE DESIGNATORNUT ASSEMBLY
OVERALL LENGTH1.229 INCHES NOMINAL IN
OUTSIDE DIAMETER4.020 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE
MATERIALALUMINUM ALLOY
SUBSTITUTES & CROSS-REFERENCES 1
R803Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 R803-48D?
R803-48D is a NUT ASSEMBLY,TUBE COUPLING.
What parts can replace R803-48D?
There is 1 known substitute for R803-48D: R803. Substitute compatibility should be verified for your specific system.
What is the NSN for R803-48D?
R803-48D is cataloged in the U.S. Government catalog under NSN 4730-01-176-3008. 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.