The Cooler,fluid,industrial, cataloged under National Stock Number 4420-01-263-2961, 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 Lockheed Martin Corporation Dba Lockheed Martin Div Mission Systems and Training. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Cooler,fluid,industrial |
| FSC / FSG | 4420 — Heat Exchangers and Steam Condensers (FSG 44) |
| Manufacturers | Lockheed Martin Corporation Dba Lockheed Martin Div Mission Systems and Training (CAGE 24900); Fluid Handling Llc (CAGE 6LE50) |
| Parameter | Value |
|---|---|
| NSN | 4420-01-263-2961 |
| Primary Part Number | 5871399 PC4 |
| Item Name | Cooler,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Lockheed Martin Corporation Dba Lockheed Martin Div Mission Systems and Training |
| 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 |
|---|---|
| 5871399 PC4 PRIMARY | Lockheed Martin Corporation Dba Lockheed Martin Div Mission Systems and Training (USA) |
| 5-142-05-018-015 PRIMARY | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 5-142-05-018-015 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
NSN 4420-01-263-2961 is a Cooler,fluid,industrial, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Div Mission Systems and Training, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-263-2961 has 2 manufacturer part numbers on file: 5871399 PC4 (Lockheed Martin Corporation Dba Lockheed Martin Div Mission Systems and Training), 5-142-05-018-015 (Fluid Handling Llc).
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.