The Seat,valve, cataloged under National Stock Number 4820-00-334-3829, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Discovery Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-334-3829 |
| Primary Part Number | 1849283 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Discovery Corporation |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.203 INCHES NOMINAL IN |
| Thread Length | 0.360 INCHES MINIMUM AND 0.391 INCHES MAXIMUM SINGLE THREADED PORTION IN |
| Body Inside Diameter | 0.750 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.938 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.360 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 16 SINGLE THREADED PORTION |
| Material | NICKEL ALLOY R-405 OVERALL |
| Seat Angle in Deg | 5.000 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 |
|---|---|
| 1849283 PRIMARY | Discovery Corporation (USA) |
| Reference | Meaning |
|---|---|
| C6078E | 5/2 Secondary reference U.S. Government activity |
| C6078 | 5/9 Secondary reference U.S. Government activity |
| 4820PL1244947 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4820-00-334-3829 is a Seat,valve, manufactured by Discovery Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-334-3829 has 1 manufacturer part number on file: 1849283 (Discovery Corporation).
1 possible match (shared part number, not a government interchangeability claim): 6150-01-702-8170. Verify interchangeability with system specifications before substitution.
Key specifications for 1849283: Flange Seat to Disk End Height: 0.203 INCHES NOMINAL IN; Thread Length: 0.360 INCHES MINIMUM AND 0.391 INCHES MAXIMUM SINGLE THREADED PORTION IN; Body Inside Diameter: 0.750 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN; Nominal Thread Size: 0.938 INCHES SINGLE THREADED PORTION IN. 11 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.