The Duct Cooler, cataloged under National Stock Number 4420-01-589-2353, 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 Kato Engineering Inc.. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Duct Cooler |
| FSC / FSG | 4420 — Heat Exchangers and Steam Condensers (FSG 44) |
| Manufacturers | Kato Engineering Inc. (CAGE 32770) |
| Parameter | Value |
|---|---|
| NSN | 4420-01-589-2353 |
| Primary Part Number | 153-00012-97 |
| Item Name | Duct Cooler |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Kato Engineering 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 |
|---|---|
| 153-00012-97 PRIMARY | Kato Engineering Inc. (USA) |
| Reference | Meaning |
|---|---|
| 301-8328931 ITEM 2 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 4828-1 | 5/9 Secondary reference Thermofina S a R L |
NSN 4420-01-589-2353 is a Duct Cooler, manufactured by Kato Engineering Inc., classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-589-2353 has 1 manufacturer part number on file: 153-00012-97 (Kato Engineering Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-719-8417. 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.