The Pump,rotary, cataloged under National Stock Number 4320-01-291-2991, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Fenner Fluid Power Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Pump,rotary |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Fenner Fluid Power Inc (CAGE 53899) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-291-2991 |
| Primary Part Number | KP50 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Fenner Fluid Power Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| KP50 PRIMARY | Fenner Fluid Power Inc (USA) |
| Reference | Meaning |
|---|---|
| PM-5.0 | 5/9 Secondary reference Fenner Fluid Power Inc |
NSN 4320-01-291-2991 is a Pump,rotary, manufactured by Fenner Fluid Power Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-291-2991 has 1 manufacturer part number on file: KP50 (Fenner Fluid Power Inc).
2 possible matches (shared part number, not a government interchangeability claim): 6625-01-475-7203, 6685-01-514-5360. Verify interchangeability with system specifications before substitution.
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.