The Seat,valve, cataloged under National Stock Number 4820-00-036-3389, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 50 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-036-3389 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Thread Length | 0.375 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | PLAIN THREADED |
| Material Document and Classification | MIL-S-853 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.188 INCHES NOMINAL IN |
| Nominal Thread Size | 0.562 INCHES SINGLE THREADED PORTION IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Material | STEEL OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| Thread Series Designator | UNF 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 |
| Reference | Meaning |
|---|---|
| D15-743BPC289 | 5/9 Secondary reference U.S. Government activity |
| D15-494JPC659 | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-631PPC659 | 5/9 Secondary reference U.S. Government activity |
| D15-509NPC694 | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-523NPC411 | 5/9 Secondary reference U.S. Government activity |
| D15-704QPC694 | 5/9 Secondary reference U.S. Government activity |
| D15-597JPC581 | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-704BPC259 | 5/2 Secondary reference U.S. Government activity |
| D15-694XPC581 | 5/9 Secondary reference U.S. Government activity |
| D15-494PPC659 | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-772NPC411 | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-699WPC694 | 5/9 Secondary reference U.S. Government activity |
| D15-633APC654 | 5/9 Secondary reference U.S. Government activity |
| D15-739YPC466 | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-530IPC411 | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-496JPC654 | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-746LPC654 | 5/9 Secondary reference U.S. Government activity |
| D15-633NPC654 | 5/2 Secondary reference U.S. Government activity |
| D15-746APC654 | 5/9 Secondary reference Westinghouse Electric Corp |
| D15-597BPC581 | 5/9 Secondary reference Westinghouse Electric Corp |
NSN 4820-00-036-3389 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
12 possible matches (shared part number, not a government interchangeability claim): 5935-00-249-1679, 3040-00-317-3197, 5950-00-509-1210. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-036-3389: Overall Height: 0.375 INCHES NOMINAL IN; Thread Length: 0.375 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: PLAIN THREADED; Material Document and Classification: MIL-S-853 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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.