The Pump Unit,reciprocating, cataloged under National Stock Number 4320-01-258-2238, 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8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-258-2238 |
| Item Name | Pump Unit,reciprocating |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Pumping Element Type | PISTON |
| Pumping Element Operating Position | HORIZONTAL |
| Reciprocating Stroke Type | FIXED |
| Prime Mover Quantity | 1 |
| Pump Quantity | 1 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | AIR |
| Operation Relationship Design | SIMULTANEOUS |
| 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 |
|---|---|
| 7055881 FIND 38 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 27187 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4320-01-258-2238 is a Pump Unit,reciprocating, classified under FSC 4320, Power and Hand Pumps. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3510-01-421-5901, 6220-01-562-9135, 6145-01-680-3504. Verify interchangeability with system specifications before substitution.
Key specifications for 4320-01-258-2238: Pumping Element Type: PISTON; Pumping Element Operating Position: HORIZONTAL; Reciprocating Stroke Type: FIXED; Prime Mover Quantity: 1. 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.