The Housing Section,liquid Pump, cataloged under National Stock Number 4320-01-458-7668, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Cosmodyne, Llc Dba Cosmodyne Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-458-7668 |
| Primary Part Number | 2603509-3 |
| Item Name | Housing Section,liquid Pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Cosmodyne, Llc Dba Cosmodyne Llc |
| Status | ACTIVE |
| General Characteristics Item Description | HOUSING DISCHARGE FOR PUMP ASSEMBLY,LIQUID OXYGEN;W/S CODE JA |
| 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 |
|---|---|
| 2603509-3 PRIMARY | Cosmodyne, Llc Dba Cosmodyne Llc (USA) |
| 2603509-3CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 2603509 | D/9 Drawing number reference only Cosmodyne, Llc Dba Cosmodyne Llc |
NSN 4320-01-458-7668 is a Housing Section,liquid Pump, manufactured by Cosmodyne, Llc Dba Cosmodyne Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-458-7668 has 2 manufacturer part numbers on file: 2603509-3 (Cosmodyne, Llc Dba Cosmodyne Llc), 2603509-3CP (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-475-1366. Verify interchangeability with system specifications before substitution.
Key specifications for 2603509-3: General Characteristics Item Description: HOUSING DISCHARGE FOR PUMP ASSEMBLY,LIQUID OXYGEN;W/S CODE JA; Special Features: SPECIAL CLEANING AND PACKAGING REQUIREMENTS APPLY. 1 specification is 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.