The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-367-0183, 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 Aqua-Chem, Inc. Dba Aqua-Chem 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4420-01-367-0183 |
| Primary Part Number | 863-07821-000 |
| Item Name | Cooler,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem 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 |
|---|---|
| 863-07821-000 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 863-7821 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 863-07821-000 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
NSN 4420-01-367-0183 is a Cooler,fluid,industrial, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-367-0183 has 1 manufacturer part number on file: 863-07821-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
1 possible match (shared part number, not a government interchangeability claim): 1670-01-688-8795. Verify interchangeability with system specifications before substitution.
Key specifications for 863-07821-000: Special Features: ITEM IS USED ON LUBE OIL COOLER; End Item Identification: ELECTRIC DIST.AQUA-CHEM INC.PART NO.863-7821. 0 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.