The Seat,valve, cataloged under National Stock Number 4820-00-935-1506, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-935-1506 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Thread Length | 0.156 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Nominal Thread Size | 0.562 INCHES SINGLE THREADED PORTION IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Material | NICKEL ALLOY BODY |
| Material | STEEL CORROSION RESISTING FACE |
| Thread Series Designator | UNEF SINGLE THREADED PORTION |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| PSI99C | 5/9 Secondary reference Federal Equipment and Manufacturing Co., Inc. Div Federal Equipment & Manufacturing Co., Inc. |
| P30399-91 | C/1 Advisory reference — outside the item-of-supply concept Steris Corporation Dba Steris Applied Sterilization Technololgies |
| FX98C | 5/9 Secondary reference Federal Equipment and Manufacturing Co., Inc. Div Federal Equipment & Manufacturing Co., Inc. |
| P30399-91 | 3/9 Design control — primary reference American Sterilizer Company Dba Amsco Sterility Assurance Products |
NSN 4820-00-935-1506 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-935-1506: Thread Length: 0.156 INCHES NOMINAL SINGLE THREADED PORTION IN; Nominal Thread Size: 0.562 INCHES SINGLE THREADED PORTION IN; Thread Class: 2A SINGLE THREADED PORTION A; Material: NICKEL ALLOY BODY. 7 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.