The Disk,valve, cataloged under National Stock Number 4820-00-412-1887, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-412-1887 |
| Primary Part Number | 2-255-43-1 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| Status | ACTIVE |
| Shank Diameter | 1.114 INCHES NOMINAL IN |
| Flange Diameter | 1.114 INCHES NOMINAL IN |
| Inside Depth | 0.812 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Seat Angle | 75.0 DEGREES NOMINAL |
| Inside Diameter | 1.000 INCHES NOMINAL IN |
| Under Flange Height | 0.472 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| 2-255-43-1 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| Reference | Meaning |
|---|---|
| 2-255-43-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-412-1887 is a Disk,valve, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-412-1887 has 1 manufacturer part number on file: 2-255-43-1 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division).
Key specifications for 2-255-43-1: Shank Diameter: 1.114 INCHES NOMINAL IN; Flange Diameter: 1.114 INCHES NOMINAL IN; Overall Height: 1.052 INCHES NOMINAL IN; Inside Depth: 0.812 INCHES NOMINAL IN. 8 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.