The Seat,valve, cataloged under National Stock Number 4820-00-009-0393, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-009-0393 |
| Primary Part Number | 975203-1 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| Flange Diameter | 0.282 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.243 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Hardness Rating | 0.667 ROCKWELL C MINIMUM BODY |
| Hardness Rating | 0.783 ROCKWELL C MAXIMUM FACE |
| Body Inside Diameter | 0.145 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 975203-1 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 975203-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-009-0393 is a Seat,valve, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-009-0393 has 1 manufacturer part number on file: 975203-1 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
Key specifications for 975203-1: Flange Diameter: 0.282 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN; Overall Height: 0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN; Body Outside Diameter: 0.243 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Hardness Rating: 0.667 ROCKWELL C MINIMUM BODY. 6 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.