The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-052-1882, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Sea Systems Command. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-052-1882 |
| Primary Part Number | 518-5952078 ITEM 1 |
| Item Name | Pump Unit,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 518-5952078 ITEM 1 PRIMARY | Naval Sea Systems Command (USA) |
| RY-166401 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| RW-166264 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| TIN-021 | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| RY-166401 | 5/9 Secondary reference U.S. Government activity |
| RW-166264 | 5/9 Secondary reference U.S. Government activity |
NSN 4320-01-052-1882 is a Pump Unit,centrifugal, manufactured by Naval Sea Systems Command, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-052-1882 has 3 manufacturer part numbers on file: 518-5952078 ITEM 1 (Naval Sea Systems Command), RY-166401 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), RW-166264 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-721-5467. Verify interchangeability with system specifications before substitution.
Key specifications for 518-5952078 ITEM 1: Special Features: SELECTED,TESTED AND CERTIFIED FOR TRIDENT SUBMARINE APPLICATION. 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.
NSN 4320-01-052-1882 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.