The Core Assembly,fluid Heater,indus, cataloged under National Stock Number 4420-01-348-5906, 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 Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4420-01-348-5906 |
| Primary Part Number | 534-08921-000 |
| Item Name | Core Assembly,fluid Heater,indus |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Tube Attachment Method | BRAZED BOTH ENDS |
| Tubing Outside Diameter | 0.625 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN |
| Material | COPPER ALLOY SHELL |
| Material | COPPER ALLOY TUBE SHEET |
| 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 |
|---|---|
| 534-08921-000 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 633-8428 ITEM 4 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 534-8921 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 534-08921-000 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
NSN 4420-01-348-5906 is a Core Assembly,fluid Heater,indus, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-348-5906 has 1 manufacturer part number on file: 534-08921-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
Key specifications for 534-08921-000: Tube Attachment Method: BRAZED BOTH ENDS; Tubing Outside Diameter: 0.625 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN; End Item Identification: DISTILLATION UNIT,100000 GPD; Material: COPPER ALLOY SHELL. 4 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.