The Seat,valve, cataloged under National Stock Number 4820-00-901-0843, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Woodward, Inc. Div Fuel Systems and Controls. Government technical data includes 7 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 | 4820-00-901-0843 |
| Primary Part Number | 406153 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Woodward, Inc. Div Fuel Systems and Controls |
| Status | ACTIVE |
| Body Outside Diameter | 0.747 INCHES NOMINAL IN |
| Hardness Rating | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.220 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 406153 PRIMARY | Woodward, Inc. Div Fuel Systems and Controls (USA) |
NSN 4820-00-901-0843 is a Seat,valve, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-901-0843 has 1 manufacturer part number on file: 406153 (Woodward, Inc. Div Fuel Systems and Controls).
Key specifications for 406153: Overall Height: 0.300 INCHES NOMINAL IN; Body Outside Diameter: 0.747 INCHES NOMINAL IN; Hardness Rating: 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL; Style Designator: PLAIN. 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.