The Core Assembly,fluid Heater,indus, cataloged under National Stock Number 4420-01-226-2253, 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 Babcock & Wilcox Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Core Assembly,fluid Heater,indus |
| FSC / FSG | 4420 — Heat Exchangers and Steam Condensers (FSG 44) |
| Manufacturers | Babcock & Wilcox Co (CAGE 05073) |
| Parameter | Value |
|---|---|
| NSN | 4420-01-226-2253 |
| Primary Part Number | 128478E PIECE 150L |
| Item Name | Core Assembly,fluid Heater,indus |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Babcock & Wilcox Co |
| 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 |
|---|---|
| 128478E PIECE 150L PRIMARY | Babcock & Wilcox Co (USA) |
| Reference | Meaning |
|---|---|
| 128478E PIECE 150L | 3/9 Design control — primary reference The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| 128478 | D/9 Drawing number reference only The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| 128478E PIECE 1 | C/1 Advisory reference — outside the item-of-supply concept Babcock & Wilcox Co |
NSN 4420-01-226-2253 is a Core Assembly,fluid Heater,indus, manufactured by Babcock & Wilcox Co, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-226-2253 has 1 manufacturer part number on file: 128478E PIECE 150L (Babcock & Wilcox Co).
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.