The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-078-0686, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker Hannifin Corp Automotive and Refrigeration Group Sinclair Collins Div. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-078-0686 |
| Primary Part Number | C333-050 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker Hannifin Corp Automotive and Refrigeration Group Sinclair Collins Div |
| Status | ACTIVE |
| Outside Diameter | 9.000 INCHES NOMINAL IN |
| Style Designator | FLAT |
| Material Thickness | 0.098 INCHES NOMINAL IN |
| Bolt Hole Quantity | 10 |
| Bolt Circle Diameter | 8.250 INCHES NOMINAL IN |
| Material | RUBBER |
| Hole Diameter | 0.270 INCHES NOMINAL 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 |
|---|---|
| C333-050 PRIMARY | Parker Hannifin Corp Automotive and Refrigeration Group Sinclair Collins Div (USA) |
| Reference | Meaning |
|---|---|
| C333-050 | 5/9 Secondary reference U.S. Government activity |
| C064-5005 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-078-0686 is a Diaphragm,valve,flat, manufactured by Parker Hannifin Corp Automotive and Refrigeration Group Sinclair Collins Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-078-0686 has 1 manufacturer part number on file: C333-050 (Parker Hannifin Corp Automotive and Refrigeration Group Sinclair Collins Div).
Key specifications for C333-050: Outside Diameter: 9.000 INCHES NOMINAL IN; Style Designator: FLAT; Material Thickness: 0.098 INCHES NOMINAL IN; Bolt Hole Quantity: 10. 7 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.