The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-01-311-3236, 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 13 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4420-01-311-3236 |
| Primary Part Number | 4-140-04-024-005 |
| 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 |
| Effective Heat Transfer Surface Area | 12.0 SQUARE FEET |
| Style Designator | STRAIGHT PLAIN TUBE, CYLINDRICAL |
| Material Document and Classification | MIL-T-15005 MIL SPEC SINGLE MATERIAL RESPONSE TUBES |
| Material Document and Classification | ASTM B16 ASSN STD SINGLE MATERIAL RESPONSE PLATES |
| Material Document and Classification | ASTM B171 ASSN STD SINGLE MATERIAL RESPONSE TUBE SHEET |
| Tube Quantity | 90 |
| Tube Attachment Method | EXPANDED BOTH ENDS |
| Core Length | 23.875 INCHES NOMINAL IN |
| Tubing Outside Diameter | 0.250 INCHES NOMINAL BOTH INLET AND OUTLET TUBE ENDS IN |
| Material | COPPER ALLOY TUBES |
| Material | COPPER ALLOY TUBE SHEET |
| Material | BRASS 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 |
|---|---|
| 5-063-04-024-008 PIECE 2 | Fluid Handling Llc (USA) |
| 4-630-04-024-008 | Fluid Handling Llc (USA) |
| 4-140-04-024-005 PRIMARY | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 4-140-04-024-005 | 3/9 Design control — primary reference Itt Corporation Dba Itt Standard |
| 5-063-04-024-008 PIECE 2 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 4-630-04-024-008 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
NSN 4420-01-311-3236 is a Core Assembly,fluid Cooler, manufactured by Fluid Handling Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-311-3236 has 3 manufacturer part numbers on file: 5-063-04-024-008 PIECE 2 (Fluid Handling Llc), 4-630-04-024-008 (Fluid Handling Llc), 4-140-04-024-005 (Fluid Handling Llc).
Key specifications for 4-140-04-024-005: Heat Transfer Method: INDIRECT; Effective Heat Transfer Surface Area: 12.0 SQUARE FEET; Style Designator: STRAIGHT PLAIN TUBE, CYLINDRICAL; Material Document and Classification: MIL-T-15005 MIL SPEC SINGLE MATERIAL RESPONSE TUBES. 13 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.