The Ring,weep,heat Exchanger, cataloged under National Stock Number 4420-01-367-2442, 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 Young Touchstone Company Div Young Touchstone. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Ring,weep,heat Exchanger |
| FSC / FSG | 4420 — Heat Exchangers and Steam Condensers (FSG 44) |
| Manufacturers | Young Touchstone Company Div Young Touchstone (CAGE 67049) |
| Parameter | Value |
|---|---|
| NSN | 4420-01-367-2442 |
| Primary Part Number | 290670 |
| Item Name | Ring,weep,heat Exchanger |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Young Touchstone Company Div Young Touchstone |
| 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 |
|---|---|
| 290670 PRIMARY | Young Touchstone Company Div Young Touchstone (USA) |
| D-324509 ITEM 28 | Young Touchstone Company Div Young Touchstone (USA) |
| Reference | Meaning |
|---|---|
| D-324509 ITEM N | C/1 Advisory reference — outside the item-of-supply concept Young Touchstone Company Div Young Touchstone |
| D-324509 | D/9 Drawing number reference only Young Touchstone Company Div Young Touchstone |
NSN 4420-01-367-2442 is a Ring,weep,heat Exchanger, manufactured by Young Touchstone Company Div Young Touchstone, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-367-2442 has 2 manufacturer part numbers on file: 290670 (Young Touchstone Company Div Young Touchstone), D-324509 ITEM 28 (Young Touchstone Company Div Young Touchstone).
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.