The Disk,valve, cataloged under National Stock Number 4820-00-586-4558, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Aircraft Appliances and Equipment Limited Div Aircraft Appliances and Equipment Ltd.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-586-4558 |
| Primary Part Number | 50281225200 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Aircraft Appliances and Equipment Limited Div Aircraft Appliances and Equipment Ltd. |
| Status | ACTIVE |
| Outside Diameter | 3.900 INCHES NOMINAL IN |
| Material Document and Classification | AISI 304 ASSN STD SINGLE MATERIAL RESPONSE |
| Material | STEEL COMP 304 |
| 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 |
|---|---|
| 50281225200 PRIMARY | Aircraft Appliances and Equipment Limited Div Aircraft Appliances and Equipment Ltd. (CAN) |
| 2812252 | Aircraft Appliances and Equipment Limited Div Aircraft Appliances and Equipment Ltd. (CAN) |
NSN 4820-00-586-4558 is a Disk,valve, manufactured by Aircraft Appliances and Equipment Limited Div Aircraft Appliances and Equipment Ltd., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-586-4558 has 2 manufacturer part numbers on file: 50281225200 (Aircraft Appliances and Equipment Limited Div Aircraft Appliances and Equipment Ltd.), 2812252 (Aircraft Appliances and Equipment Limited Div Aircraft Appliances and Equipment Ltd.).
Key specifications for 50281225200: Overall Height: 2.630 INCHES NOMINAL IN; Outside Diameter: 3.900 INCHES NOMINAL IN; Material Document and Classification: AISI 304 ASSN STD SINGLE MATERIAL RESPONSE; Material: STEEL COMP 304. 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.