The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-249-5442, 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 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-249-5442 |
| Primary Part Number | 31-5340 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Grundfos Pumps Corp |
| Status | ACTIVE |
| Overall Diameter | 3.740 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| 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 |
|---|---|
| 31-5340 PRIMARY | Grundfos Pumps Corp (USA) |
| Reference | Meaning |
|---|---|
| 31-5340-3.74IN | C/1 Advisory reference — outside the item-of-supply concept Grundfos Pumps Corp |
NSN 4320-01-249-5442 is a Impeller,pump,centrifugal, manufactured by Grundfos Pumps Corp, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-249-5442 has 1 manufacturer part number on file: 31-5340 (Grundfos Pumps Corp).
Key specifications for 31-5340: Overall Diameter: 3.740 INCHES NOMINAL IN; End Item Identification: GRUNDFOS PUMPS CORP MODEL TWR 821,822,823,824,825,831,832,833 PUMP; Material: STEEL CORROSION RESISTING; Rotation Direction for Which Designed: COUNTERCLOCKWISE. 3 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.