The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-01-389-9046, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Cummins Inc.. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Core Assembly,fluid Cooler |
| FSC / FSG | 4420 — Heat Exchangers and Steam Condensers (FSG 44) |
| Manufacturers | Cummins South Pacific Pty Ltd Head Office (CAGE ZC672); Cummins Inc. (CAGE 15434) |
| Parameter | Value |
|---|---|
| NSN | 4420-01-389-9046 |
| Primary Part Number | 4933306 |
| Item Name | Core Assembly,fluid Cooler |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| 4019971 | Cummins South Pacific Pty Ltd Head Office (AUS) |
| 4933306 PRIMARY | Cummins Inc. (USA) |
| 4933306 | Cummins South Pacific Pty Ltd Head Office (AUS) |
| Reference | Meaning |
|---|---|
| 3919857 | 5/9 Secondary reference Cummins Inc. |
| 40199-7100 | C/1 Advisory reference — outside the item-of-supply concept Cummins Inc. |
| 3897203 | 5/9 Secondary reference Cummins Inc. |
| 4019971 | 5/9 Secondary reference Cummins Inc |
NSN 4420-01-389-9046 is a Core Assembly,fluid Cooler, manufactured by Cummins Inc., classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-389-9046 has 3 manufacturer part numbers on file: 4019971 (Cummins South Pacific Pty Ltd Head Office), 4933306 (Cummins Inc.), 4933306 (Cummins South Pacific Pty Ltd Head Office).
1 possible match (shared part number, not a government interchangeability claim): 9905-01-612-1633. 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.