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18740-20800 — NUT,TUBE COUPLING,REDUCING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

18740-20800: NUT,TUBE COUPLING,REDUCING.

The NUT,TUBE COUPLING,REDUCING is a the manufacturer industrial component. Key specifications include end_item_identification: ITEM SUPPORTS GAS CHROMATOGRAPH MODEL 5890, 5890A, NSN 01-227-4274, AND MODELS 6890, AND 6890A A. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-468-2901, 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
18740-20800
NSN: 4730-01-468-2901
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0YSC6 — AGILENT TECHNOLOGIES INC DBA AGILENT TECHNOLOGIES INC DIV CUSTOMER SERVICE AND SALES (USA)
SPECIFICATIONS
end_item_identificationITEM SUPPORTS GAS CHROMATOGRAPH MODEL 5890, 5890A, NSN 01-227-4274, AND MODELS 6890, AND 6890A A
NSN4730-01-468-2901
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 18740-20800 · 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONITEM SUPPORTS GAS CHROMATOGRAPH MODEL 5890, 5890A, NSN 01-227-4274, AND MODELS 6890, AND 6890A A
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
98-1412Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 18740-20800?
18740-20800 is a NUT,TUBE COUPLING,REDUCING.
What parts can replace 18740-20800?
There is 1 known substitute for 18740-20800: 98-1412. Substitute compatibility should be verified for your specific system.
What is the NSN for 18740-20800?
18740-20800 is cataloged in the U.S. Government catalog under NSN 4730-01-468-2901. 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.