The Pump,rotary, cataloged under National Stock Number 4320-01-537-2231, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-537-2231 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Operating Speed at Rated Capacity | 4000.0 REVOLUTIONS PER MINUTE |
| Drive Shaft Type | WOODRUFF KEYWAY |
| Maximum Discharge Flow Rate | 2.3 GALLONS PER MINUTE |
| Rotary Pump Design | GEAR |
| Material | ALUMINUM PUMP BASIC |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Pump Rotation Direction | COUNTERCLOCKWISE |
| Operation Method | POWERED |
| 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 |
|---|---|
| 4879-1 | 5/9 Secondary reference Eaton Aviation Corporation |
| D07BA1L | 3/9 Design control — primary reference Parker Hannifin Corporation Dba Hydraulic Pump/motor Duv Div Hydraulic Pump Division |
NSN 4320-01-537-2231 is a Pump,rotary, classified under FSC 4320, Power and Hand Pumps. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5365-01-545-1422. Verify interchangeability with system specifications before substitution.
Key specifications for 4320-01-537-2231: Operating Speed at Rated Capacity: 4000.0 REVOLUTIONS PER MINUTE; Drive Shaft Type: WOODRUFF KEYWAY; Special Features: FLOW GPM BASED ON 100 SSU VISCOSITY FLUIDS AT 120 DEG F DEGF; Maximum Discharge Flow Rate: 2.3 GALLONS PER MINUTE. 8 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.