The Disk,valve, cataloged under National Stock Number 4820-01-336-8308, 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 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-336-8308 |
| Primary Part Number | 1881001 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| Status | ACTIVE |
| Shank Diameter | 0.313 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 0.781 INCHES NOMINAL IN |
| Outside Diameter | 0.5280 INCHES MINIMUM AND 0.5285 INCHES MAXIMUM IN |
| Style Designator | POPPET |
| Seat Angle | 20.0 DEGREES NOMINAL |
| Inside Diameter | 0.285 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 1881001 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| P91728 | Jlg Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| P91728 | 5/9 Secondary reference Lull Lift Corp Dba Omniquip Parts Worldwide |
| 1881001 | 3/9 Design control — primary reference Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division |
NSN 4820-01-336-8308 is a Disk,valve, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-336-8308 has 2 manufacturer part numbers on file: 1881001 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), P91728 (Jlg Industries, Inc.).
Key specifications for 1881001: Shank Diameter: 0.313 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.781 INCHES NOMINAL IN; Overall Height: 1.922 INCHES NOMINAL IN; Outside Diameter: 0.5280 INCHES MINIMUM AND 0.5285 INCHES MAXIMUM IN. 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.