The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-01-170-9851, 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 Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-170-9851 |
| Primary Part Number | D2446 |
| Item Name | Core Assembly,fluid Cooler |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp |
| Status | ACTIVE |
| Core Frontal Area | 75.2 SQUARE INCHES |
| Heat Transfer Method | INDIRECT |
| Style Designator | PLAIN "U" TUBE |
| Core Diameter | 16.000 INCHES NOMINAL IN |
| Tube Quantity | 80 |
| Tube Attachment Method | ANY ACCEPTABLE |
| Core Length | 75.250 INCHES NOMINAL IN |
| Tubing Outside Diameter | 0.625 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN |
| Material | COPPER ALLOY TUBES |
| Material | COPPER ALLOY TUBE SHEET |
| Material | STEEL CORROSION RESISTING PLATES |
| 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 |
|---|---|
| D2446 PRIMARY | Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp (USA) |
NSN 4420-01-170-9851 is a Core Assembly,fluid Cooler, manufactured by Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-170-9851 has 1 manufacturer part number on file: D2446 (Xchanger Manufacturing Corporation Dba Xchanger Manufacturing Corp).
Key specifications for D2446: Core Frontal Area: 75.2 SQUARE INCHES; Heat Transfer Method: INDIRECT; Style Designator: PLAIN "U" TUBE; Core Diameter: 16.000 INCHES NOMINAL IN. 11 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.