The Disk,valve, cataloged under National Stock Number 4820-00-558-1243, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Schneider Electric Systems Usa Inc. Government technical data includes 3 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 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 | 4820-00-558-1243 |
| Primary Part Number | 20869 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Schneider Electric Systems Usa Inc |
| Status | ACTIVE |
| Outside Diameter | 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Inside Diameter | 0.124 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 20869 PRIMARY | Schneider Electric Systems Usa Inc (USA) |
NSN 4820-00-558-1243 is a Disk,valve, manufactured by Schneider Electric Systems Usa Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-558-1243 has 1 manufacturer part number on file: 20869 (Schneider Electric Systems Usa Inc).
1 possible match (shared part number, not a government interchangeability claim): 5950-00-645-1946. Verify interchangeability with system specifications before substitution.
Key specifications for 20869: Overall Height: 0.580 INCHES NOMINAL IN; Outside Diameter: 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN; Inside Diameter: 0.124 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN; Material: STEEL CORROSION RESISTING. 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.