The Pump Subassembly,centrifugal, cataloged under National Stock Number 4320-01-446-7409, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Grundfos Pumps Corp. Government technical data includes 4 specifications, 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 | 4320-01-446-7409 |
| Primary Part Number | 425057 |
| Item Name | Pump Subassembly,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Grundfos Pumps Corp |
| Status | ACTIVE |
| Major Components | TOP INTERMEDIATE CHAMBER 1; INTERMEDIATE CHAMBER WITH BEARING 2; INTERMEDIATE CHAMBER 9; SHAFT 1; IMPELLER 12 |
| Overall Diameter | 145.0 MILLIMETERS NOMINAL MM |
| Supplementary Features | MANUFACTURER'S NOMENCLATURE IS STACK KIT |
| Mounting Configuration | VERTICAL STACK |
| 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 |
|---|---|
| 425057 PRIMARY | Grundfos Pumps Corp (USA) |
NSN 4320-01-446-7409 is a Pump Subassembly,centrifugal, manufactured by Grundfos Pumps Corp, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-446-7409 has 1 manufacturer part number on file: 425057 (Grundfos Pumps Corp).
Key specifications for 425057: Major Components: TOP INTERMEDIATE CHAMBER 1; INTERMEDIATE CHAMBER WITH BEARING 2; INTERMEDIATE CHAMBER 9; SHAFT 1; IMPELLER 12; Overall Diameter: 145.0 MILLIMETERS NOMINAL MM; Supplementary Features: MANUFACTURER'S NOMENCLATURE IS STACK KIT; Overall Length: 481.5 MILLIMETERS NOMINAL MM. 4 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.