The Heat Exchanger,fluid to Air, cataloged under National Stock Number 4420-01-696-2393, 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 Drs Environmental Systems 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Heat Exchanger,fluid to Air |
| FSC / FSG | 4420 — Heat Exchangers and Steam Condensers (FSG 44) |
| Manufacturers | Drs Environmental Systems Inc (CAGE 5RQL2) |
| Parameter | Value |
|---|---|
| NSN | 4420-01-696-2393 |
| Primary Part Number | 22-1-1-502-101 |
| Item Name | Heat Exchanger,fluid to Air |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Drs Environmental Systems 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 |
|---|---|
| 22-1-1-502-101 | Drs Environmental Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 22-1-1-502 | D/9 Drawing number reference only Drs Environmental Systems Inc |
| 22-1-1-502-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4420-01-696-2393 is a Heat Exchanger,fluid to Air, manufactured by Drs Environmental Systems Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-696-2393 has 1 manufacturer part number on file: 22-1-1-502-101 (Drs Environmental Systems Inc).
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.