The Core Assembly,fluid Heater,indus, cataloged under National Stock Number 4420-01-377-3966, 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5 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-377-3966 |
| Item Name | Core Assembly,fluid Heater,indus |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Tube Quantity | 126 |
| Core Length | 36.000 INCHES NOMINAL IN |
| Tubing Outside Diameter | 0.500 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 4-162-10-036-001 | C/1 Advisory reference — outside the item-of-supply concept Fluid Handling Llc |
| 5-050-10-036-002 ITEM 2 | C/1 Advisory reference — outside the item-of-supply concept Fluid Handling Llc |
| 4-162-10-036-001 | 3/9 Design control — primary reference Itt Corporation Dba Itt Standard |
| 5-050-10-036-002 ITEM 2 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
NSN 4420-01-377-3966 is a Core Assembly,fluid Heater,indus, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
Key specifications for 4420-01-377-3966: Heat Transfer Method: INDIRECT; Tube Quantity: 126; Core Length: 36.000 INCHES NOMINAL IN; Tubing Outside Diameter: 0.500 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS 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.