The Seat,valve, cataloged under National Stock Number 4820-01-067-1893, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-067-1893 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Nominal Thread Size | 4.438 INCHES SINGLE THREADED PORTION IN |
| Thread Quantity Per Inch | 12 SINGLE THREADED PORTION |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| 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 |
|---|---|
| 040053004 | 3/9 Design control — primary reference Crane Co Crane Valve and Parts Div |
| C101031-1-5-4IN | C/1 Advisory reference — outside the item-of-supply concept Crane Co Crane Valve and Parts Div |
NSN 4820-01-067-1893 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-067-1893: Nominal Thread Size: 4.438 INCHES SINGLE THREADED PORTION IN; Thread Quantity Per Inch: 12 SINGLE THREADED PORTION; Material: NICKEL ALLOY OVERALL; Thread Series Designator: UNS SINGLE THREADED PORTION. 4 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.