The Seat,valve, cataloged under National Stock Number 4820-00-059-7617, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-059-7617 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.611 INCHES MINIMUM AND 0.612 INCHES MAXIMUM IN |
| Thread Length | 0.400 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.415 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN |
| Under Flange Height | 0.800 INCHES NOMINAL IN |
| Thread Class | 3A SECOND THREADED PORTION A |
| Thread Class | 3B FIRST THREADED PORTION |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 215-72406 | D/9 Drawing number reference only U.S. Government activity |
| 215-72406-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-059-7617 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-059-7617: Flange Seat to Disk End Height: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Body Outside Diameter: 0.611 INCHES MINIMUM AND 0.612 INCHES MAXIMUM IN; Thread Length: 0.400 INCHES NOMINAL SINGLE THREADED PORTION IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL. 10 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.