The Seat,valve, cataloged under National Stock Number 4820-01-349-6900, 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 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-349-6900 |
| Primary Part Number | 211056524 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Body Outside Diameter | 4.484 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 3.060 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 |
|---|---|
| DF330635 FIND 9 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 211056524 PRIMARY | Naval Sea Systems Command (USA) |
| 801-6408778 FIND 9 | Naval Sea Systems Command (USA) |
NSN 4820-01-349-6900 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-349-6900 has 3 manufacturer part numbers on file: DF330635 FIND 9 (Huntington Ingalls Inc Div Newport News Shipbuilding), 211056524 (Naval Sea Systems Command), 801-6408778 FIND 9 (Naval Sea Systems Command).
Key specifications for 211056524: Overall Height: 0.563 INCHES NOMINAL IN; Body Outside Diameter: 4.484 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 3.060 INCHES NOMINAL IN. 3 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.