The Seat,valve, cataloged under National Stock Number 4820-01-142-3086, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-142-3086 |
| Primary Part Number | 20252 FIND 5 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Thread Length | 0.140 INCHES NOMINAL FIRST THREADED PORTION IN |
| Thread Length | 0.375 INCHES NOMINAL SECOND THREADED PORTION IN |
| Style Designator | DOUBLE FLANGED |
| Body Inside Diameter | 0.272 INCHES NOMINAL IN |
| Nominal Thread Size | 0.500 INCHES FIRST THREADED PORTION IN |
| Nominal Thread Size | 0.875 INCHES SECOND THREADED PORTION IN |
| Thread Class | 2A SECOND THREADED PORTION A |
| Thread Class | 2A FIRST THREADED PORTION A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Seat Angle in Deg | 60.000 NOMINAL |
| Thread Series Designator | UNEF SECOND THREADED PORTION |
| Thread Series Designator | UNF FIRST 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 |
|---|---|
| 20252 FIND 5 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| B12483.001.127 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| B12483.001.127 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 20252 FIND 5 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-142-3086 is a Seat,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-142-3086 has 2 manufacturer part numbers on file: 20252 FIND 5 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), B12483.001.127 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for 20252 FIND 5: Overall Height: 0.959 INCHES NOMINAL IN; Thread Length: 0.140 INCHES NOMINAL FIRST THREADED PORTION IN; Thread Length: 0.375 INCHES NOMINAL SECOND THREADED PORTION IN; Style Designator: DOUBLE FLANGED. 13 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.