The Seat,valve, cataloged under National Stock Number 4820-00-059-4926, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-059-4926 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Body Outside Diameter | 0.904 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.709 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN |
| Material | PLASTIC OVERALL |
| Seat Angle in Deg | 79.000 MINIMUM AND 81.000 MAXIMUM |
| 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 |
|---|---|
| 177972 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-059-4926 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6210-00-144-4640. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-059-4926: Overall Height: 0.083 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN; Body Outside Diameter: 0.904 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN; Style Designator: PLAIN; Body Inside Diameter: 0.709 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN. 6 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.