The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-00-757-4158, 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 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-757-4158 |
| Primary Part Number | 22511422 |
| Item Name | Impeller,pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Keyway Type | RECTANGULAR |
| Keyway Depth | 0.188 INCHES NOMINAL IN |
| Hub Bore Diameter | 6.125 INCHES NOMINAL AND 1.750 INCHES NOMINAL IN |
| Hub Length | 0.875 INCHES NOMINAL AND 0.375 INCHES NOMINAL IN |
| Design Type | SINGLE WIDTH |
| Overall Diameter | 10.125 INCHES NOMINAL IN |
| Mounting Method | KEY |
| Keyway Quantity | 1 |
| Hub Projection Length Beyond Wheel Side | 2.000 INCHES NOMINAL AND 0.125 INCHES NOMINAL IN |
| Blade Quantity | 6 |
| Keyway Length | 1.517 INCHES NOMINAL IN |
| Hub Quantity | 2 |
| Hub Location | FRONT SIDE AND BACK SIDE |
| Keyway Width | 0.344 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| 22511422 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| 22511422 | 3/9 Design control — primary reference Pentair Pump Group, Inc. Dba Fairbanks Morse Pump |
| 22511422 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 2251149-2 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 2251144-3 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
NSN 4320-00-757-4158 is a Impeller,pump,centrifugal, manufactured by Fairbanks Morse, Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-757-4158 has 1 manufacturer part number on file: 22511422 (Fairbanks Morse, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-148-7528. Verify interchangeability with system specifications before substitution.
Key specifications for 22511422: Keyway Type: RECTANGULAR; Keyway Depth: 0.188 INCHES NOMINAL IN; Hub Bore Diameter: 6.125 INCHES NOMINAL AND 1.750 INCHES NOMINAL IN; Hub Length: 0.875 INCHES NOMINAL AND 0.375 INCHES NOMINAL 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.