The Seat,valve, cataloged under National Stock Number 4810-00-397-5927, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4810-00-397-5927 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.122 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN |
| Flange Diameter | 0.680 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN |
| Thread Length | 0.478 INCHES MINIMUM AND 0.488 INCHES MAXIMUM SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Body Inside Diameter | 0.260 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.500 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.478 INCHES MINIMUM AND 0.488 INCHES MAXIMUM IN |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Material | ALUMINUM ALLOY 356.0 OVERALL |
| Seat Angle in Deg | 30.000 NOMINAL |
| Thread Series Designator | UNF 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 |
|---|---|
| 211252 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4810-00-397-5927 is a Seat,valve, classified under FSC 4810, Valves, Powered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2520-01-558-8200. Verify interchangeability with system specifications before substitution.
Key specifications for 4810-00-397-5927: Flange Seat to Disk End Height: 0.122 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN; Flange Diameter: 0.680 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN; Thread Length: 0.478 INCHES MINIMUM AND 0.488 INCHES MAXIMUM SINGLE THREADED PORTION IN; Style Designator: THREADED FLANGED. 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.