The Pump,centrifugal, cataloged under National Stock Number 4320-01-421-0269, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is The Gorman-Rupp Company Div Gorman-Rupp. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-421-0269 |
| Primary Part Number | RS3A31-B |
| Item Name | Pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | The Gorman-Rupp Company Div Gorman-Rupp |
| Status | ACTIVE |
| Volume Control Type | ROTARY |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| 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 |
|---|---|
| RS3A31-B PRIMARY | The Gorman-Rupp Company Div Gorman-Rupp (USA) |
| BOF22084 | Marshall of Cambridge Aerospace Limited (GBR) |
| Reference | Meaning |
|---|---|
| RS3A-3B | 5/9 Secondary reference Chiltern Products Ltd |
| RS3A-3B | 5/9 Secondary reference Chiltern Products |
NSN 4320-01-421-0269 is a Pump,centrifugal, manufactured by The Gorman-Rupp Company Div Gorman-Rupp, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-421-0269 has 2 manufacturer part numbers on file: RS3A31-B (The Gorman-Rupp Company Div Gorman-Rupp), BOF22084 (Marshall of Cambridge Aerospace Limited).
Key specifications for RS3A31-B: Volume Control Type: ROTARY; Special Features: 4 BY 3 IN. FLANGED PUMP IN; Media for Which Designed: HYDROCARBON FUELS AND OILS. 2 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.