The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-375-8903, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Coffin Turbo Pump Inc. Government technical data includes 17 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 | 4320-00-375-8903 |
| Primary Part Number | 107-7786-1 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Coffin Turbo Pump Inc |
| Status | ACTIVE |
| Keyway Type | SQUARE |
| Keyway Depth | 0.125 INCHES NOMINAL IN |
| Hub Bore Diameter | 1.312 INCHES NOMINAL IN |
| Hub Length | 0.500 INCHES NOMINAL AND 2.938 INCHES MINIMUM IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 9.875 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Keyway Quantity | 3 |
| Hub Projection Length Beyond Wheel Side | 2.938 INCHES NOMINAL IN |
| Blade Quantity | 6 |
| Keyway Length | 3.375 INCHES NOMINAL IN |
| Hub Quantity | 2 |
| Hub Location | BACK SIDE AND FRONT SIDE |
| Keyway Width | 0.375 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 107-7786-1 PRIMARY | Coffin Turbo Pump Inc (USA) |
NSN 4320-00-375-8903 is a Impeller,pump,centrifugal, manufactured by Coffin Turbo Pump Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-375-8903 has 1 manufacturer part number on file: 107-7786-1 (Coffin Turbo Pump Inc).
Key specifications for 107-7786-1: Keyway Type: SQUARE; Keyway Depth: 0.125 INCHES NOMINAL IN; Hub Bore Diameter: 1.312 INCHES NOMINAL IN; Hub Length: 0.500 INCHES NOMINAL AND 2.938 INCHES MINIMUM IN. 17 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.