The Disk,valve, cataloged under National Stock Number 4820-00-369-9883, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ametek Inc Schutte and Koerting Div. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-369-9883 |
| Primary Part Number | 58A20REVAPC21 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ametek Inc Schutte and Koerting Div |
| Status | ACTIVE |
| Outside Diameter | 3.750 INCHES NOMINAL IN |
| Nominal Thread Size | 2.500 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL |
| Thread Series Designator | UN |
| 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 |
|---|---|
| 58A20REVAPC21 PRIMARY | Ametek Inc Schutte and Koerting Div (USA) |
| Reference | Meaning |
|---|---|
| 58A20-21 | C/1 Advisory reference — outside the item-of-supply concept Ametek Inc Schutte and Koerting Div |
NSN 4820-00-369-9883 is a Disk,valve, manufactured by Ametek Inc Schutte and Koerting Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-369-9883 has 1 manufacturer part number on file: 58A20REVAPC21 (Ametek Inc Schutte and Koerting Div).
Key specifications for 58A20REVAPC21: Overall Height: 12.312 INCHES NOMINAL IN; Outside Diameter: 3.750 INCHES NOMINAL IN; Nominal Thread Size: 2.500 INCHES IN; Thread Class: 2B. 6 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.