The Heat E,changer, cataloged under National Stock Number 4470-00-780-5303, is classified within Federal Supply Class 4470 (Nuclear Reactors) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Westinghouse Electric Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Heat E,changer |
| FSC / FSG | 4470 — Nuclear Reactors (FSG 44) |
| Manufacturers | Westinghouse Electric Corp (CAGE 79500) |
| Parameter | Value |
|---|---|
| NSN | 4470-00-780-5303 |
| Primary Part Number | 671J278AND671J279 |
| Item Name | Heat E,changer |
| FSC / FSG | 4470 / 44 — Nuclear Reactors |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 671J278AND671J279 | Westinghouse Electric Corp (USA) |
| 671J278 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 671J278AND671J279 | 3/2 Design control — primary reference U.S. Government activity |
| 671J278AND671J279 | 5/9 Secondary reference U.S. Government activity |
NSN 4470-00-780-5303 is a Heat E,changer, manufactured by Westinghouse Electric Corp, classified under FSC 4470, Nuclear Reactors. Status: active.
NSN 4470-00-780-5303 has 2 manufacturer part numbers on file: 671J278AND671J279 (Westinghouse Electric Corp), 671J278 (Westinghouse Electric Corp).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4470-00-780-5303 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.