The Core Assembly,fluid Heater,indus, cataloged under National Stock Number 4420-01-180-3103, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4420-01-180-3103 |
| Primary Part Number | 4-115-21-138-001 PIECE 1 |
| Item Name | Core Assembly,fluid Heater,indus |
| 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 | 790 |
| Tube Attachment Method | EXPANDED BOTH ENDS |
| Core Length | 137.875 INCHES NOMINAL IN |
| Tubing Outside Diameter | 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Material | COPPER OVERALL |
| 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 |
|---|---|
| 4-115-21-138-001 PIECE 1 PRIMARY | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 4-115-21-138-001 PIECE 1 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
NSN 4420-01-180-3103 is a Core Assembly,fluid Heater,indus, manufactured by Fluid Handling Llc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-180-3103 has 1 manufacturer part number on file: 4-115-21-138-001 PIECE 1 (Fluid Handling Llc).
Key specifications for 4-115-21-138-001 PIECE 1: Heat Transfer Method: INDIRECT; Style Designator: STRAIGHT PLAIN TUBE, CYLINDRICAL; Tube Quantity: 790; Tube Attachment Method: EXPANDED BOTH ENDS. 7 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.