The Disk,valve, cataloged under National Stock Number 4820-00-623-7109, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-623-7109 |
| Primary Part Number | 8528187 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Outside Diameter | 0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.188 INCHES IN |
| Thread Class | 3A A |
| Material | STEEL CORROSION RESISTING |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 8528187 | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| D60126-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-623-7109 is a Disk,valve, manufactured by Us Army Aviation and Missile Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-623-7109 has 1 manufacturer part number on file: 8528187 (Us Army Aviation and Missile Command).
Key specifications for 8528187: Overall Height: 1.146 INCHES MINIMUM AND 1.166 INCHES MAXIMUM IN; Outside Diameter: 0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN; Nominal Thread Size: 0.188 INCHES IN; Thread Class: 3A A. 5 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.