The Seat,valve, cataloged under National Stock Number 4820-00-436-7604, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-436-7604 |
| Primary Part Number | 285601 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.296 INCHES NOMINAL IN |
| Flange Diameter | 0.538 INCHES NOMINAL IN |
| Body Outside Diameter | 0.500 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM BODY |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM FACE |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.375 INCHES NOMINAL IN |
| Under Flange Height | 0.204 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seat Angle in Deg | 60.000 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 |
| Part Number | Manufacturer |
|---|---|
| 285601 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
NSN 4820-00-436-7604 is a Seat,valve, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-436-7604 has 1 manufacturer part number on file: 285601 (Eaton Aerospace, Llc Dba Jackson South).
Key specifications for 285601: Flange Seat to Disk End Height: 0.296 INCHES NOMINAL IN; Flange Diameter: 0.538 INCHES NOMINAL IN; Body Outside Diameter: 0.500 INCHES NOMINAL IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM BODY. 11 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.