The Seat,valve, cataloged under National Stock Number 4820-01-057-7282, 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8 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-057-7282 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.036 INCHES NOMINAL IN |
| Body Outside Diameter | 1.044 INCHES MINIMUM AND 1.046 INCHES MAXIMUM IN |
| Body Stepped Inside Diameter | 0.520 INCHES MINIMUM AND 0.522 INCHES MAXIMUM FIRST STEP IN |
| Style Designator | THREADED FLANGED |
| Under Flange Height | 0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN |
| Material | FLUOROCARBON RUBBER OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| 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 |
|---|---|
| 280090-35PC15 | 5/2 Secondary reference U.S. Government activity |
| 166752-0091 | 3/2 Design control — primary reference U.S. Government activity |
| 280090 PIECE 15 | 5/2 Secondary reference U.S. Government activity |
| 166752-91 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-057-7282 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-057-7282: Flange Seat to Disk End Height: 0.036 INCHES NOMINAL IN; Overall Height: 0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN; Body Outside Diameter: 1.044 INCHES MINIMUM AND 1.046 INCHES MAXIMUM IN; Body Stepped Inside Diameter: 0.520 INCHES MINIMUM AND 0.522 INCHES MAXIMUM FIRST 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.