The Coupling,pipe, cataloged under National Stock Number 4730-01-631-9293, 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 United States Plastic Corp. The record lists 1 manufacturer part number 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 | 4730-01-631-9293 |
| Primary Part Number | 28520 |
| Item Name | Coupling,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | United States Plastic Corp |
| Status | ACTIVE |
| 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 |
|---|---|
| 28520 PRIMARY | United States Plastic Corp (USA) |
NSN 4730-01-631-9293 is a Coupling,pipe, manufactured by United States Plastic Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-631-9293 has 1 manufacturer part number on file: 28520 (United States Plastic Corp).
1 possible match (shared part number, not a government interchangeability claim): 4030-01-645-6951. Verify interchangeability with system specifications before substitution.
Key specifications for 28520: Special Features: DIMENSION: 38.1 MM MM; Part Name Assigned by Controlling Agency: COUPLING, UPVC, GREY 1-1/2 INCH IN. 0 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.