The Tube Sheet,inner, cataloged under National Stock Number 4420-01-139-2789, 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 DC Fabricators Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-139-2789 |
| Primary Part Number | CW-3050SA |
| Item Name | Tube Sheet,inner |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | DC Fabricators Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| CW-3050SA PRIMARY | DC Fabricators Inc (USA) |
| CW-2300AL PIECE 352 | DC Fabricators Inc (USA) |
| Reference | Meaning |
|---|---|
| CW-3050SA | 5/9 Secondary reference Siemens Energy, Inc. |
| CW-2300AL PIECE 352 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 4420-01-139-2789 is a Tube Sheet,inner, manufactured by DC Fabricators Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-139-2789 has 2 manufacturer part numbers on file: CW-3050SA (DC Fabricators Inc), CW-2300AL PIECE 352 (DC Fabricators Inc).
Key specifications for CW-3050SA: End Item Identification: MAIN CONDENSER L.H. PORT. 0 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.