The Seat,valve, cataloged under National Stock Number 4820-00-062-8198, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-062-8198 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Body Stepped Inside Diameter | 0.124 INCHES MINIMUM AND 0.126 INCHES MAXIMUM FIRST STEP IN |
| Body Stepped Inside Diameter | 0.436 INCHES MINIMUM AND 0.440 INCHES MAXIMUM THIRD STEP IN |
| Body Stepped Inside Diameter | 0.448 INCHES MINIMUM AND 0.449 INCHES MAXIMUM SECOND STEP IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.494 INCHES MINIMUM AND 0.496 INCHES MAXIMUM IN |
| Seat Radius | 0.003 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Seating Surface Shape | RADIAL |
| 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 |
|---|---|
| 180736-81 | 5/9 Secondary reference U.S. Government activity |
| 180736-0081 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-062-8198 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-062-8198: Overall Height: 0.176 INCHES NOMINAL IN; Body Stepped Inside Diameter: 0.124 INCHES MINIMUM AND 0.126 INCHES MAXIMUM FIRST STEP IN; Body Stepped Inside Diameter: 0.436 INCHES MINIMUM AND 0.440 INCHES MAXIMUM THIRD STEP IN; Body Stepped Inside Diameter: 0.448 INCHES MINIMUM AND 0.449 INCHES MAXIMUM SECOND STEP IN. 8 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.