The Core Assembly,fluid Cooler, cataloged under National Stock Number 4420-01-433-8179, 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 Enerquip, Llc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4420-01-433-8179 |
| Primary Part Number | 1-313599 |
| Item Name | Core Assembly,fluid Cooler |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Enerquip, Llc |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Style Designator | PLAIN "U" TUBE |
| Core Diameter | 9.530 INCHES NOMINAL IN |
| 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 |
|---|---|
| 4-313600 ITEM 8 | Enerquip, Llc (USA) |
| 1-313599 PRIMARY | Enerquip, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4-313600 | D/9 Drawing number reference only Enerquip, Llc |
NSN 4420-01-433-8179 is a Core Assembly,fluid Cooler, manufactured by Enerquip, Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-433-8179 has 2 manufacturer part numbers on file: 4-313600 ITEM 8 (Enerquip, Llc), 1-313599 (Enerquip, Llc).
Key specifications for 1-313599: Heat Transfer Method: INDIRECT; Style Designator: PLAIN "U" TUBE; Core Diameter: 9.530 INCHES NOMINAL IN; End Item Identification: W/S CODE, WASP CLASS LHD. 3 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.