The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-549-0535, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Carver Pump Company. Government technical data includes 9 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.
| Parameter | Value |
|---|---|
| NSN | 4320-01-549-0535 |
| Primary Part Number | 003-1005A01-250 4.375" DIA |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Keyway Type | SQUARE |
| Keyway Depth | 0.094 INCHES NOMINAL IN |
| Overall Diameter | 4.375 INCHES NOMINAL IN |
| Mounting Method | KEY AND SETSCREW |
| Criticality Code Justification | FEAT |
| Keyway Quantity | 1 |
| Hub Quantity | 1 |
| Keyway Width | 0.187 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 003-1005A01-250 4.375" DIA PRIMARY | Carver Pump Company (USA) |
| 999-1205-A-01 IT 2 | Carver Pump Company (USA) |
NSN 4320-01-549-0535 is a Impeller,pump,centrifugal, manufactured by Carver Pump Company, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-549-0535 has 2 manufacturer part numbers on file: 003-1005A01-250 4.375" DIA (Carver Pump Company), 999-1205-A-01 IT 2 (Carver Pump Company).
Key specifications for 003-1005A01-250 4.375" DIA: Keyway Type: SQUARE; Keyway Depth: 0.094 INCHES NOMINAL IN; Overall Diameter: 4.375 INCHES NOMINAL IN; Mounting Method: KEY AND SETSCREW. 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.