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DF2680-1556 FN 80 — CONNECTION,FLEXIBLE,PIPELINE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

DF2680-1556 FN 80: CONNECTION,FLEXIBLE,PIPELINE.

The CONNECTION,FLEXIBLE,PIPELINE is a the manufacturer industrial component. Key specifications include special_features: FLANGED ROUND SYNTHETIC RUBBER; 7.380ODX4.000IDX5.000D; EXTRUDED SYNTHETIC RUBBER 5.000X1.690X0.187 THICK, connection_design: STRAIGHT, end_item_identification: MISC PARTS VENTILATION SYSTEMS SSN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-516-7339, 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
DF2680-1556 FN 80
NSN: 4730-01-516-7339
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
special_featuresFLANGED ROUND SYNTHETIC RUBBER; 7.380ODX4.000IDX5.000D; EXTRUDED SYNTHETIC RUBBER 5.000X1.690X0.187 THICK
connection_designSTRAIGHT
end_item_identificationMISC PARTS VENTILATION SYSTEMS SSN
NSN4730-01-516-7339
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: DF2680-1556 FN 80 · 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
•
CONNECTION DESIGN: STRAIGHT
TECHNICAL CHARACTERISTICS
CONNECTION DESIGNSTRAIGHT
SPECIAL FEATURESFLANGED ROUND SYNTHETIC RUBBER; 7.380ODX4.000IDX5.000D; EXTRUDED SYNTHETIC RUBBER 5.000X1.690X0.187 THICK
END ITEM IDENTIFICATIONMISC PARTS VENTILATION SYSTEMS SSN
SUBSTITUTES & CROSS-REFERENCES 4
512-6406851Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
512-6903604-F61Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B643-3040-F61Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
512-6406851 FN 80Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 DF2680-1556 FN 80?
DF2680-1556 FN 80 is a CONNECTION,FLEXIBLE,PIPELINE.
What parts can replace DF2680-1556 FN 80?
There are 4 known substitutes for DF2680-1556 FN 80: 512-6406851, 512-6903604-F61, B643-3040-F61 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DF2680-1556 FN 80?
DF2680-1556 FN 80 is cataloged in the U.S. Government catalog under NSN 4730-01-516-7339. 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.