The Stem,fluid Valve, cataloged under National Stock Number 4820-01-412-0308, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-412-0308 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 DISK |
| Valve Type for Which Designed | GLOBE |
| Largest Outside Diameter | 0.688 INCHES NOMINAL IN |
| Stem Actuating End Type | SQUARE AND THREADED EXTERNALLY |
| Valve Model Number for Which Designed | PSSSN21C-505 |
| Valve Size for Which Designed | 0.250 INCHES IN |
| Material | NICKEL ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 603901DC | 5/9 Secondary reference U.S. Government activity |
| 003901DC | 3/2 Design control — primary reference U.S. Government activity |
| PLC-11401 PIECE 4 | 5/2 Secondary reference U.S. Government activity |
| PLC-11401-4 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-412-0308 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-540-2322, 4820-01-549-6675. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-412-0308: Furnished Items and Quantity: 1 DISK; Valve Type for Which Designed: GLOBE; Largest Outside Diameter: 0.688 INCHES NOMINAL IN; Stem Actuating End Type: SQUARE AND THREADED EXTERNALLY. 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.