The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-01-428-3200, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-428-3200 |
| Item Name | Core Assembly,fluid Cooler |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Status | ACTIVE |
| Heat Transfer Method | DIRECT |
| Style Designator | STRAIGHT PLAIN TUBE, CYLINDRICAL |
| Core Diameter | 6.750 INCHES NOMINAL IN |
| Core Length | 24.500 INCHES NOMINAL IN |
| Material | COPPER TUBES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AB-1003 90/10 CNT | 5/9 Secondary reference Maritime Tanksystems International, Inc Dba Flume Stabilization Systems |
| AB-1003 90/10 CNT | 3/9 Design control — primary reference American Industrial Heat Transfer, Inc. |
NSN 4420-01-428-3200 is a Core Assembly,fluid Cooler, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
Key specifications for 4420-01-428-3200: Heat Transfer Method: DIRECT; Style Designator: STRAIGHT PLAIN TUBE, CYLINDRICAL; Core Diameter: 6.750 INCHES NOMINAL IN; Core Length: 24.500 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
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.