The Seat,valve, cataloged under National Stock Number 4820-00-304-3773, 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 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-304-3773 |
| Primary Part Number | 255584PC19 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Body Outside Diameter | 2.469 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 1.562 INCHES NOMINAL IN |
| Material | PLASTIC ACETAL OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| Seating Surface Shape | ANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 255584PC19 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 4820-00-304-3773 is a Seat,valve, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-304-3773 has 1 manufacturer part number on file: 255584PC19 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 255584PC19: Overall Height: 2.270 INCHES MINIMUM AND 2.280 INCHES MAXIMUM IN; Body Outside Diameter: 2.469 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 1.562 INCHES NOMINAL IN. 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 4820-00-304-3773 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.