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DF330769 ASSY-NN — UNION,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

DF330769 ASSY-NN: UNION,TUBE.

The UNION,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, connection_type: THREADED INTERNAL TUBE SECOND END, part_name_assigned_by_controlling_agency: TAILPIECE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-620-8343, 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
DF330769 ASSY-NN
NSN: 4730-01-620-8343
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
connection_typeTHREADED INTERNAL TUBE SECOND END
part_name_assigned_by_controlling_agencyTAILPIECE
NSN4730-01-620-8343
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: DF330769 ASSY-NN · 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 TYPE: UNTHREADED INTERNAL PIPE FIRST END
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION TYPEUNTHREADED INTERNAL PIPE FIRST END
CONNECTION TYPETHREADED INTERNAL TUBE SECOND END
PART NAME ASSIGNED BY CONTROLLING AGENCYTAILPIECE
MATERIALSTEEL CORROSION RESISTING OVERALL
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 3
211034953Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
H521-1905-F202Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
594-7284978-F202Same 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 DF330769 ASSY-NN?
DF330769 ASSY-NN is a UNION,TUBE.
What parts can replace DF330769 ASSY-NN?
There are 3 known substitutes for DF330769 ASSY-NN: 211034953, H521-1905-F202, 594-7284978-F202. Substitute compatibility should be verified for your specific system.
What is the NSN for DF330769 ASSY-NN?
DF330769 ASSY-NN is cataloged in the U.S. Government catalog under NSN 4730-01-620-8343. 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.