The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-01-339-8006, 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 Fluid Handling Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-339-8006 |
| Primary Part Number | 503605072001 PC 2 |
| Item Name | Core Assembly,fluid Cooler |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Fluid Handling Llc |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Style Designator | STRAIGHT PLAIN TUBE, CYLINDRICAL |
| Tube Quantity | 64 |
| Tube Attachment Method | EXPANDED BOTH ENDS |
| Core Length | 71.875 INCHES NOMINAL IN |
| Tubing Outside Diameter | 0.375 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN |
| Material | COPPER ALLOY TUBES |
| 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 |
|---|---|
| 503605072001 PC 2 | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 4-141-05-072-00 | C/1 Advisory reference — outside the item-of-supply concept Itt Corporation Dba Itt Standard |
| 503605072001 PC 2 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 4-141-05-072-00 | C/1 Advisory reference — outside the item-of-supply concept Fluid Handling Llc |
| 414105072001 | 3/9 Design control — primary reference Itt Corporation Dba Itt Standard |
| 414105072001 | C/1 Advisory reference — outside the item-of-supply concept Fluid Handling Llc |
NSN 4420-01-339-8006 is a Core Assembly,fluid Cooler, manufactured by Fluid Handling Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-339-8006 has 1 manufacturer part number on file: 503605072001 PC 2 (Fluid Handling Llc).
Key specifications for 503605072001 PC 2: Heat Transfer Method: INDIRECT; Style Designator: STRAIGHT PLAIN TUBE, CYLINDRICAL; Tube Quantity: 64; Tube Attachment Method: EXPANDED BOTH ENDS. 8 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.