The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-161-5481, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4320-01-161-5481 |
| Primary Part Number | 16-702-551 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Keyway Type | STRAIGHT |
| Keyway Depth | 0.187 INCHES NOMINAL IN |
| Hub Bore Diameter | 1.250 INCHES NOMINAL IN |
| Hub Length | 4.375 INCHES NOMINAL IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 8.000 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Keyway Quantity | 1 |
| Hub Projection Length Beyond Wheel Side | 2.750 INCHES NOMINAL IN |
| Blade Quantity | 6 |
| Keyway Length | 4.375 INCHES NOMINAL IN |
| Hub Quantity | 1 |
| Hub Location | BACK SIDE |
| Keyway Width | 0.375 INCHES NOMINAL IN |
| Cubic Measure | 1.000 CUBIC FEET |
| Material | COPPER ALLOY |
| Rotation Direction for Which Designed | CLOCKWISE OR COUNTERCLOCKWISE |
| Blade Type | STRAIGHT |
| 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 |
|---|---|
| 16-702-551 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| 16-702-551 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4320-01-161-5481 is a Impeller,pump,centrifugal, manufactured by Fairbanks Morse, Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-161-5481 has 1 manufacturer part number on file: 16-702-551 (Fairbanks Morse, Llc).
Key specifications for 16-702-551: Keyway Type: STRAIGHT; Keyway Depth: 0.187 INCHES NOMINAL IN; Hub Bore Diameter: 1.250 INCHES NOMINAL IN; Hub Length: 4.375 INCHES NOMINAL IN. 18 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.