The Ferrule,swage,tube Coupling, cataloged under National Stock Number 4730-01-329-5122, 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 Northrop Grumman Systems Corporation. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-329-5122 |
| Primary Part Number | GC550NA |
| Item Name | Ferrule,swage,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Slot Quantity | 4 |
| Style Designator | SINGLE FLANGE |
| Flange Inside Diameter | 2.011 INCHES NOMINAL IN |
| Sleeve Outside Diameter | 2.145 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Flange Width | 0.060 INCHES NOMINAL IN |
| Material | STEEL COMP 630 |
| Flange Outside Diameter | 2.313 INCHES NOMINAL IN |
| Hose/tube Outside Diameter for Which Designed | 2.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| GC550NA PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 63162-32 PRIMARY | Transdigm Inc Div Adelwiggins Group (USA) |
| GC550NA32FC | Northrop Grumman Systems Corporation (USA) |
NSN 4730-01-329-5122 is a Ferrule,swage,tube Coupling, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-329-5122 has 3 manufacturer part numbers on file: GC550NA (Northrop Grumman Systems Corporation), 63162-32 (Transdigm Inc Div Adelwiggins Group), GC550NA32FC (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-339-5301. Verify interchangeability with system specifications before substitution.
Key specifications for GC550NA: Slot Quantity: 4; Style Designator: SINGLE FLANGE; Flange Inside Diameter: 2.011 INCHES NOMINAL IN; Overall Length: 1.390 INCHES NOMINAL IN. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.