The Coupling,pipe, cataloged under National Stock Number 4730-01-477-9972, 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 Better Engineering Manufacturing Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-477-9972 |
| Primary Part Number | 4421 |
| Item Name | Coupling,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Better Engineering Manufacturing Inc |
| Status | ACTIVE |
| Criticality Code Justification | AGAV |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 4421 PRIMARY | Better Engineering Manufacturing Inc (USA) |
NSN 4730-01-477-9972 is a Coupling,pipe, manufactured by Better Engineering Manufacturing Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-477-9972 has 1 manufacturer part number on file: 4421 (Better Engineering Manufacturing Inc).
Key specifications for 4421: Criticality Code Justification: AGAV; Part Name Assigned by Controlling Agency: PIPE,FITTING,AIRCRAFT; End Item Identification: NIIN: 014351595 DEGREASER (FACILITY TYPE EQUIPMENT). 1 specification is 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.