The Disk,valve, cataloged under National Stock Number 4820-01-260-8709, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Silicone Rubber Right Products Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-260-8709 |
| Primary Part Number | 5-1-1057 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Silicone Rubber Right Products Llc |
| Status | ACTIVE |
| Shank Diameter | 0.093 INCHES NOMINAL IN |
| Flange Diameter | 1.200 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Seat Angle | 40.0 DEGREES NOMINAL |
| Media for Which Designed | GAS |
| Material | RUBBER SYNTHETIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-260-8709 is a Disk,valve, manufactured by Silicone Rubber Right Products Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-260-8709 has 2 manufacturer part numbers on file: 5-1-1057 (Silicone Rubber Right Products Llc), 5-1-1057 (Champion Rubber Products Company, Inc.).
Key specifications for 5-1-1057: Shank Diameter: 0.093 INCHES NOMINAL IN; Flange Diameter: 1.200 INCHES NOMINAL IN; Overall Height: 0.932 INCHES NOMINAL IN; Style Designator: POPPET. 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.
NSN 4820-01-260-8709 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.