PartsTable TECHNICAL DATA SHEET
NSN 4730-01-044-3943Government record, cited

Coupling Assembly, Tube, Flexible4730-01-044-3943

NSN 4730-01-044-3943 · NIIN 010443943 · Part number 63221-6
Transdigm Inc Div Adelwiggins Group · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 79326
Government record, cited
NSN 4730-01-044-3943 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-044-3943. Manufacturer of record part number: 63221-6.
Also searched as  4730-01-044-3943 · 4730010443943 · NIIN 010443943 · 01-044-3943 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 79326 · 63221-6 · GC550GR6
Nearby stock numbers  ·
Features
  • Coupling Assembly,tube,flexible — FSC 4730
  • Tube Outside Diameter for Which Designed: 0.375 INCHES NOMINAL IN
  • Style Designator: FLEXIBLE COUPLING ASSEMBLY
  • Outside Diameter: 1.031 INCHES MAXIMUM IN
  • Material: ALUMINUM ALLOY 2024
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Transdigm Inc Div Adelwiggins Group
Identification
  • NSN: 4730-01-044-3943
  • NIIN: 010443943
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: 63221-6
  • Manufacturer: Transdigm Inc Div Adelwiggins Group
General Description

The Coupling Assembly,tube,flexible, cataloged under National Stock Number 4730-01-044-3943, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Transdigm Inc Div Adelwiggins Group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-044-3943
Primary Part Number63221-6
Item NameCoupling Assembly,tube,flexible
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerTransdigm Inc Div Adelwiggins Group
StatusACTIVE
Tube Outside Diameter for Which Designed0.375 INCHES NOMINAL IN
Style DesignatorFLEXIBLE COUPLING ASSEMBLY
Outside Diameter1.031 INCHES MAXIMUM IN
MaterialALUMINUM ALLOY 2024
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
GC550GR6 Northrop Grumman Systems Corporation (USA)
63221-6 PRIMARY Transdigm Inc Div Adelwiggins Group (USA)
No interchangeability data on file.
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
4730-00-000-1895 · Item name not on file
4730-00-000-4289
4730-00-000-4289 · Item name not on file
4730-00-000-4445
4730-00-000-4445 · Item name not on file
4730-00-000-8373
4730-00-000-8373 · Item name not on file
4730-00-000-8897
4730-00-000-8897 · Item name not on file
4730-00-001-0007
4730-00-001-0007 · Item name not on file
4730-00-001-0008
COUPLING,TUBE
4730-00-001-0008
COUPLING,TUBE

Frequently Asked Questions

What is NSN 4730-01-044-3943?

NSN 4730-01-044-3943 is a Coupling Assembly,tube,flexible, manufactured by Transdigm Inc Div Adelwiggins Group, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-044-3943?

NSN 4730-01-044-3943 has 2 manufacturer part numbers on file: GC550GR6 (Northrop Grumman Systems Corporation), 63221-6 (Transdigm Inc Div Adelwiggins Group).

What are the specifications of 63221-6?

Key specifications for 63221-6: Tube Outside Diameter for Which Designed: 0.375 INCHES NOMINAL IN; Style Designator: FLEXIBLE COUPLING ASSEMBLY; Overall Length: 2.963 INCHES MAXIMUM IN; Outside Diameter: 1.031 INCHES MAXIMUM IN. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-044-3943 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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