The Stem,fluid Valve, cataloged under National Stock Number 4820-01-196-5409, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-196-5409 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Stem Actuating End Type | SQUARE |
| Valve Model Number for Which Designed | 2640-001 |
| Material | COPPER ALLOY 630 |
| 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 |
|---|---|
| 2640-001 | D/9 Drawing number reference only U.S. Government activity |
| 8451889750 | D/9 Drawing number reference only U.S. Government activity |
| 2640-001 PIECE 5 | 3/2 Design control — primary reference U.S. Government activity |
| 8451889750 PIECE 5 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-196-5409 is a Stem,fluid Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6610-01-575-8795. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-196-5409: Stem Actuating End Type: SQUARE; Valve Model Number for Which Designed: 2640-001; Overall Length: 5.969 INCHES NOMINAL IN; Special Features: ONE END DIA. 1.621 TO 1.623 IN; OTHER END 1.000 BY 1.000 IN. IN. 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.