The Disk,valve, cataloged under National Stock Number 4820-01-289-8411, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-289-8411 |
| Primary Part Number | 5016130290 ITEM 2 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside Diameter | 3.000 INCHES NOMINAL IN |
| Style Designator | PLUG |
| Seat Angle | 20.0 DEGREES NOMINAL |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 87643-6503A ITEM 2 | Derbyshire Machine & Tool Co (USA) |
| 5016130290 ITEM 2 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 501-6130290 | D/9 Drawing number reference only Naval Sea Systems Command |
| 87643-6503A ITEM 2 | 5/2 Secondary reference U.S. Government activity |
| 87643-6503A | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-289-8411 is a Disk,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-289-8411 has 2 manufacturer part numbers on file: 87643-6503A ITEM 2 (Derbyshire Machine & Tool Co), 5016130290 ITEM 2 (Naval Sea Systems Command).
Key specifications for 5016130290 ITEM 2: Overall Height: 26.250 INCHES NOMINAL IN; Outside Diameter: 3.000 INCHES NOMINAL IN; Style Designator: PLUG; Seat Angle: 20.0 DEGREES NOMINAL. 4 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.