The Core Assembly,fluid Heater,indus, cataloged under National Stock Number 4420-01-375-4580, 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 Thermal Engineering International (usa) Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4420-01-375-4580 |
| Primary Part Number | 700-D-720 |
| Item Name | Core Assembly,fluid Heater,indus |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Thermal Engineering International (usa) Inc. |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Effective Heat Transfer Surface Area | 3520.0 SQUARE FEET |
| Tube Quantity | 70 |
| 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 |
|---|---|
| 700-D-720 PRIMARY | Thermal Engineering International (usa) Inc. (USA) |
| 700-D-721 ITEM 4 | Thermal Engineering International (usa) Inc. (USA) |
| Reference | Meaning |
|---|---|
| 700-D-720 | 5/9 Secondary reference Thermal Engineering International Usa Inc |
| 700-D-721 ITEM 4 | 5/9 Secondary reference Thermal Engineering International Usa Inc |
NSN 4420-01-375-4580 is a Core Assembly,fluid Heater,indus, manufactured by Thermal Engineering International (usa) Inc., classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-375-4580 has 2 manufacturer part numbers on file: 700-D-720 (Thermal Engineering International (usa) Inc.), 700-D-721 ITEM 4 (Thermal Engineering International (usa) Inc.).
Key specifications for 700-D-720: Heat Transfer Method: INDIRECT; Effective Heat Transfer Surface Area: 3520.0 SQUARE FEET; Tube Quantity: 70; End Item Identification: COOLER,FLUID LH. 3 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.