The Seat,valve Unit, cataloged under National Stock Number 4820-01-686-8280, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-686-8280 |
| Primary Part Number | 211038353Q3 |
| Item Name | Seat,valve Unit |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | AGAV |
| Reference Number Differentiating Characteristics | PMS 409 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 211038353Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| DF330621-FIND NO-9Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 801-6404593-FIND NO-9Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| DF330621-FIND NO-9 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 211038353 | 5/2 Secondary reference U.S. Government activity |
| 801-6404593-FIND NO-9 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 4820-01-686-8280 is a Seat,valve Unit, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-686-8280 has 4 manufacturer part numbers on file: 211038353Q3 (Naval Inventory Control Point Mechanicsburg), DF330621-FIND NO-9Q3 (Naval Inventory Control Point Mechanicsburg), 801-6404593-FIND NO-9Q3 (Naval Inventory Control Point Mechanicsburg), DF330621-FIND NO-9 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 211038353Q3: Criticality Code Justification: AGAV; End Item Identification: PMS 409; Reference Number Differentiating Characteristics: PMS 409. 2 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.