The Impeller,pump,centrifugal, cataloged under National Stock Number 2930-01-101-2690, is classified within Federal Supply Class 2930 (Engine Cooling System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 15 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 | 2930-01-101-2690 |
| Primary Part Number | 4N1751 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 2930 / 29 — Engine Cooling System Components, Nonaircraft |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Hub Bore Diameter | 0.595 INCHES NOMINAL IN |
| Hub Length | 1.125 INCHES NOMINAL IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 6.000 INCHES NOMINAL IN |
| Mounting Method | THREAD |
| Thread Diameter | 0.312 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Hub Projection Length Beyond Wheel Side | 0.500 INCHES NOMINAL IN |
| Hub Quantity | 1 |
| Hub Location | FRONT SIDE |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Material | STEEL |
| Thread Quantity | 18 PER INCH |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| 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 |
|---|---|
| 4N1751 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2930-01-101-2690 is a Impeller,pump,centrifugal, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2930, Engine Cooling System Components, Nonaircraft. Status: active.
NSN 2930-01-101-2690 has 1 manufacturer part number on file: 4N1751 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4N1751: Hub Bore Diameter: 0.595 INCHES NOMINAL IN; Hub Length: 1.125 INCHES NOMINAL IN; Design Type: SINGLE WIDTH; Overall Diameter: 6.000 INCHES NOMINAL IN. 15 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.