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C20040AD — COUPLING ASSEMBLY,TUBE,FLEXIBLE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

C20040AD: COUPLING ASSEMBLY,TUBE,FLEXIBLE.

COUPLING ASSEMBLY,TUBE,FLEXIBLE. Key specifications include material: ALUMINUM ALLOY 2024, overall_length: 2.828 INCHES NOMINAL IN, outside_diameter: 4.850 INCHES NOMINAL IN, style_designator: FLEXIBLE COUPLING ASSEMBLY, surface_treatment: ANODIZE AND GOLD, end_item_identification: F-14 AIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-080-9085, 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
C20040AD
NSN: 4730-00-080-9085
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 08118 — EATON AVIATION CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
overall_length2.828 INCHES NOMINAL IN
outside_diameter4.850 INCHES NOMINAL IN
style_designatorFLEXIBLE COUPLING ASSEMBLY
surface_treatmentANODIZE AND GOLD
end_item_identificationF-14 AIRCRAFT
tube_outside_diameter_for_which_designed4.000 INCHES NOMINAL IN
NSN4730-00-080-9085
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: C20040AD · 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: 4.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLEXIBLE COUPLING ASSEMBLY
•
OUTSIDE DIAMETER: 4.850 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE AND GOLD
•
MATERIAL: ALUMINUM ALLOY 2024
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED4.000 INCHES NOMINAL IN
STYLE DESIGNATORFLEXIBLE COUPLING ASSEMBLY
OVERALL LENGTH2.828 INCHES NOMINAL IN
OUTSIDE DIAMETER4.850 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE AND GOLD
END ITEM IDENTIFICATIONF-14 AIRCRAFT
MATERIALALUMINUM ALLOY 2024
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 2
GS530AB400Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
T14-400ZReference 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 C20040AD?
C20040AD is a COUPLING ASSEMBLY,TUBE,FLEXIBLE.
What parts can replace C20040AD?
There are 2 known substitutes for C20040AD: GS530AB400, T14-400Z. Substitute compatibility should be verified for your specific system.
What is the NSN for C20040AD?
C20040AD is cataloged in the U.S. Government catalog under NSN 4730-00-080-9085. 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.