The Seat,valve, cataloged under National Stock Number 4820-00-301-4983, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-301-4983 |
| Primary Part Number | DJV62X1 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Flange Diameter | 2.585 INCHES MINIMUM AND 2.595 INCHES MAXIMUM IN |
| Thread Length | 0.812 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Hardness Rating | 387.0 BRINELL STANDARD NOMINAL BODY |
| Style Designator | THREADED FLANGED |
| Material Document and Classification | MIL-S-853 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Nominal Thread Size | 2.000 INCHES SINGLE THREADED PORTION IN |
| Seat Radius | 0.125 INCHES NOMINAL IN |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 8 SINGLE THREADED PORTION |
| Material | STEEL BODY |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Seating Surface Shape | RADIAL |
| 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 |
|---|---|
| H1129PC165 | Siemens Energy, Inc. (USA) |
| DJV62X1 PRIMARY | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| H3230200PC165 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-00-301-4983 is a Seat,valve, manufactured by Siemens Energy, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-301-4983 has 2 manufacturer part numbers on file: H1129PC165 (Siemens Energy, Inc.), DJV62X1 (Siemens Energy, Inc.).
Key specifications for DJV62X1: Flange Diameter: 2.585 INCHES MINIMUM AND 2.595 INCHES MAXIMUM IN; Thread Length: 0.812 INCHES NOMINAL SINGLE THREADED PORTION IN; Hardness Rating: 387.0 BRINELL STANDARD NOMINAL BODY; Style Designator: THREADED FLANGED. 12 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.