The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-290-5041, 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 Boyd Corporation (woburn) Inc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Cooler,fluid,industrial |
| FSC / FSG | 4420 — Heat Exchangers and Steam Condensers (FSG 44) |
| Manufacturers | Boyd Corporation (woburn) Inc (CAGE 11245); Eci Defense Group, Inc. Dba Eci Defense Group Inc (CAGE 3SDB5) |
| Parameter | Value |
|---|---|
| NSN | 4420-01-290-5041 |
| Primary Part Number | 6515G2 |
| Item Name | Cooler,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Boyd Corporation (woburn) 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 |
|---|---|
| 6515G2 PRIMARY | Boyd Corporation (woburn) Inc (USA) |
| 6515G2 | Eci Defense Group, Inc. Dba Eci Defense Group Inc (USA) |
| Reference | Meaning |
|---|---|
| 265-5750665 | D/9 Drawing number reference only Boyd Corporation (woburn) Inc |
| 5750665-015 | 5/9 Secondary reference Boyd Corporation (woburn) Inc |
NSN 4420-01-290-5041 is a Cooler,fluid,industrial, manufactured by Boyd Corporation (woburn) Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-290-5041 has 2 manufacturer part numbers on file: 6515G2 (Boyd Corporation (woburn) Inc), 6515G2 (Eci Defense Group, Inc. Dba Eci Defense Group Inc).
1 possible match (shared part number, not a government interchangeability claim): 4420-01-290-5042. 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.