The Seat,valve, cataloged under National Stock Number 4820-00-469-0367, 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 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-469-0367 |
| Primary Part Number | 564-S4824-937933 PIECE 18 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Style Designator | PLAIN THREADED |
| Body Inside Diameter | 1.375 INCHES MINIMUM AND 1.377 INCHES MAXIMUM IN |
| Nominal Thread Size | 1.812 INCHES SINGLE THREADED PORTION IN |
| Thread Class | 4A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 16 SINGLE THREADED PORTION |
| Material | NICKEL ALLOY OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| 564-S4824-937933 PIECE 18 PRIMARY | Naval Sea Systems Command (USA) |
| 4824-935036PC14 | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| K1-4824-1001289PC22 | 3/2 Design control — primary reference U.S. Government activity |
| 3000-115PC22 | 5/9 Secondary reference U.S. Government activity |
| 4824-935036PC14 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-469-0367 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-469-0367 has 2 manufacturer part numbers on file: 564-S4824-937933 PIECE 18 (Naval Sea Systems Command), 4824-935036PC14 (Derbyshire Machine & Tool Co).
Key specifications for 564-S4824-937933 PIECE 18: Overall Height: 0.375 INCHES NOMINAL IN; Style Designator: PLAIN THREADED; Body Inside Diameter: 1.375 INCHES MINIMUM AND 1.377 INCHES MAXIMUM IN; Nominal Thread Size: 1.812 INCHES SINGLE THREADED PORTION IN. 9 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.