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74B830089-101 — COUPLING ASSEMBLY,TUBE,FLEXIBLE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

74B830089-101: COUPLING ASSEMBLY,TUBE,FLEXIBLE.

COUPLING ASSEMBLY,TUBE,FLEXIBLE. Key specifications include material: STEEL COMP 321, overall_length: 2.730 INCHES MINIMUM AND 2.766 INCHES MAXIMUM IN, outside_diameter: 3.297 INCHES NOMINAL IN, style_designator: FLEXIBLE COUPLING ASSEMBLY, end_item_identification: 43N AIRCRAFT. HORNET F/A-18, tube_outside_diameter_for_which_designed: 2.000 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 4730-01-181-6797, 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
74B830089-101
NSN: 4730-01-181-6797
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 321
overall_length2.730 INCHES MINIMUM AND 2.766 INCHES MAXIMUM IN
outside_diameter3.297 INCHES NOMINAL IN
style_designatorFLEXIBLE COUPLING ASSEMBLY
end_item_identification43N AIRCRAFT. HORNET F/A-18
working_temp_and_service_type200.0 DEG FAHRENHEIT NOMINAL AIR AND 200.0 DEG FAHRENHEIT NOMINAL OIL AND 200.0 DEG FAHRENHEIT NOMINAL GAS AND 200.0 DEG FAHRENHEIT NOMINAL JET FUEL
tube_outside_diameter_for_which_designed2.000 INCHES NOMINAL IN
NSN4730-01-181-6797
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 74B830089-101 · 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
•
WORKING TEMP AND SERVICE TYPE: 200.0 DEG FAHRENHEIT NOMINAL AIR AND 200.0 DEG FAHRENHEIT NOMINAL OIL AND 200.0 DEG FAHRENHEIT NOMINAL GAS AND 200.0 DEG FAHRENHEIT NOMINAL JET FUEL
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 2.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLEXIBLE COUPLING ASSEMBLY
•
OUTSIDE DIAMETER: 3.297 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 321
•
WORKING PRESSURE AND SERVICE TYPE: 331.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AIR AND 331.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL AND 331.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 331.0 POUNDS PER SQUARE INCH (PSI) NOMINAL JET FUEL LBS
TECHNICAL CHARACTERISTICS
WORKING TEMP AND SERVICE TYPE200.0 DEG FAHRENHEIT NOMINAL AIR AND 200.0 DEG FAHRENHEIT NOMINAL OIL AND 200.0 DEG FAHRENHEIT NOMINAL GAS AND 200.0 DEG FAHRENHEIT NOMINAL JET FUEL
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.000 INCHES NOMINAL IN
STYLE DESIGNATORFLEXIBLE COUPLING ASSEMBLY
OVERALL LENGTH2.730 INCHES MINIMUM AND 2.766 INCHES MAXIMUM IN
OUTSIDE DIAMETER3.297 INCHES NOMINAL IN
END ITEM IDENTIFICATION43N AIRCRAFT. HORNET F/A-18
MATERIALSTEEL COMP 321
WORKING PRESSURE AND SERVICE TYPE331.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AIR AND 331.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL AND 331.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 331.0 POUNDS PER SQUARE INCH (PSI) NOMINAL JET FUEL LBS
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
74B830089Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
10A410-200Reference 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 74B830089-101?
74B830089-101 is a COUPLING ASSEMBLY,TUBE,FLEXIBLE.
What parts can replace 74B830089-101?
There are 2 known substitutes for 74B830089-101: 74B830089, 10A410-200. Substitute compatibility should be verified for your specific system.
What is the NSN for 74B830089-101?
74B830089-101 is cataloged in the U.S. Government catalog under NSN 4730-01-181-6797. 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.