The Seat,valve Unit, cataloged under National Stock Number 4820-01-686-8388, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-686-8388 |
| Primary Part Number | DF330658*FN-13 |
| Item Name | Seat,valve Unit |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | PMS 409 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| DF330658*FN-13 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 211043627Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| DF330658*FN-13Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 801-6405317-FIND NO-13Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 211043627 | 5/2 Secondary reference U.S. Government activity |
| 801-6405317-FIND NO-13 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 4820-01-686-8388 is a Seat,valve Unit, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-686-8388 has 4 manufacturer part numbers on file: DF330658*FN-13 (Huntington Ingalls Inc Div Newport News Shipbuilding), 211043627Q3 (Naval Inventory Control Point Mechanicsburg), DF330658*FN-13Q3 (Naval Inventory Control Point Mechanicsburg), 801-6405317-FIND NO-13Q3 (Naval Inventory Control Point Mechanicsburg).
Key specifications for DF330658*FN-13: Reference Number Differentiating Characteristics: PMS 409. 1 specification is 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 4820-01-686-8388 has DEMIL Code Q. 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.