The Core Assembly,fluid Heater,indus, cataloged under National Stock Number 4420-01-202-5749, 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 Indeeco Llc Dba Indeeco. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-202-5749 |
| Primary Part Number | 72-19750-31 |
| Item Name | Core Assembly,fluid Heater,indus |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Indeeco Llc Dba Indeeco |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Style Designator | PLAIN "U" TUBE |
| Core Diameter | 2.000 INCHES NOMINAL IN |
| Core Length | 46.500 INCHES NOMINAL IN |
| Material | NICKEL ALLOY TUBES |
| 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 |
|---|---|
| 72-19750-31 PRIMARY | Indeeco Llc Dba Indeeco (USA) |
| 729XA0563 | Indeeco Llc Dba Indeeco (USA) |
| Reference | Meaning |
|---|---|
| 6388-47 | 5/9 Secondary reference Air Dry Co of America, Llc |
| 4130PL0842421 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 6388-47 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4420-01-202-5749 is a Core Assembly,fluid Heater,indus, manufactured by Indeeco Llc Dba Indeeco, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-202-5749 has 2 manufacturer part numbers on file: 72-19750-31 (Indeeco Llc Dba Indeeco), 729XA0563 (Indeeco Llc Dba Indeeco).
Key specifications for 72-19750-31: Heat Transfer Method: INDIRECT; Style Designator: PLAIN "U" TUBE; Core Diameter: 2.000 INCHES NOMINAL IN; Core Length: 46.500 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.