The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-104-6426, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-104-6426 |
| Primary Part Number | 9N139 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 4.240 INCHES NOMINAL IN |
| Blade Quantity | 6 |
| Material | IRON CAST |
| Rotation Direction for Which Designed | CLOCKWISE |
| Blade Type | BACKWARD CURVE |
| 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 |
|---|---|
| 9N139 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 6CA944 | C/1 Advisory reference — outside the item-of-supply concept Oshkosh Defense Llc |
| IPD9N0139 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
| 6CA944 | 5/9 Secondary reference Oshkosh Corp |
NSN 4320-01-104-6426 is a Impeller,pump,centrifugal, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-104-6426 has 1 manufacturer part number on file: 9N139 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 9N139: Design Type: SINGLE WIDTH; Overall Diameter: 4.240 INCHES NOMINAL IN; Overall Width: 1.136 INCHES NOMINAL IN; Blade Quantity: 6. 6 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.