The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-797-3665, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-797-3665 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Keyway Type | RECTANGULAR |
| Hub Bore Diameter | 1.312 INCHES MINIMUM AND 4.125 INCHES MAXIMUM IN |
| Hub Length | 1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 12.000 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Keyway Quantity | 1 |
| Hub Projection Length Beyond Wheel Side | 1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN |
| Blade Quantity | 5 |
| Keyway Length | 1.938 INCHES NOMINAL IN |
| Hub Quantity | 2 |
| Hub Location | BACK SIDE AND FRONT SIDE |
| Keyway Width | 0.500 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Rotation Direction for Which Designed | CLOCKWISE |
| Blade Type | FORWARD CURVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| C3B1H | 3/9 Design control — primary reference J C H Automatic Machine Works |
| C3B1H | 5/9 Secondary reference U.S. Government activity |
NSN 4320-00-797-3665 is a Impeller,pump,centrifugal, classified under FSC 4320, Power and Hand Pumps. Status: active.
Key specifications for 4320-00-797-3665: Keyway Type: RECTANGULAR; Hub Bore Diameter: 1.312 INCHES MINIMUM AND 4.125 INCHES MAXIMUM IN; Hub Length: 1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN; Design Type: SINGLE WIDTH. 16 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.