The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-01-172-0787, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-172-0787 |
| Primary Part Number | 4 140 08 042 003 |
| 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 | FINNED PLATE, CYLINDRICAL |
| Material Document and Classification | MIL-T-15005 MIL SPEC SINGLE MATERIAL RESPONSE TUBES |
| Tube Quantity | 394 |
| Tube Attachment Method | ANY ACCEPTABLE |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| Core Length | 41.875 INCHES NOMINAL IN |
| Tubing Outside Diameter | 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED 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 |
|---|---|
| 4 140 08 042 003 PRIMARY | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 4 140 08 042 003 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
NSN 4420-01-172-0787 is a Core Assembly,fluid Cooler, manufactured by Fluid Handling Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-172-0787 has 1 manufacturer part number on file: 4 140 08 042 003 (Fluid Handling Llc).
Key specifications for 4 140 08 042 003: Heat Transfer Method: INDIRECT; Style Designator: FINNED PLATE, CYLINDRICAL; Material Document and Classification: MIL-T-15005 MIL SPEC SINGLE MATERIAL RESPONSE TUBES; Tube Quantity: 394. 10 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.