The Seat,valve, cataloged under National Stock Number 4820-00-248-0567, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is David Brown Hydraulics Inc Dba Hydreco. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-248-0567 |
| Primary Part Number | 840975 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | David Brown Hydraulics Inc Dba Hydreco |
| Status | ACTIVE |
| Style Designator | PLAIN THREADED |
| Body Inside Diameter | 0.078 INCHES NOMINAL IN |
| Nominal Thread Size | 0.125 INCHES SINGLE THREADED PORTION IN |
| Material | STEEL OVERALL |
| Thread Series Designator | NPT SINGLE THREADED PORTION |
| 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 |
|---|---|
| 840975 PRIMARY | David Brown Hydraulics Inc Dba Hydreco (USA) |
| Reference | Meaning |
|---|---|
| 840975 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-00-248-0567 is a Seat,valve, manufactured by David Brown Hydraulics Inc Dba Hydreco, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-248-0567 has 1 manufacturer part number on file: 840975 (David Brown Hydraulics Inc Dba Hydreco).
Key specifications for 840975: Overall Height: 0.234 INCHES NOMINAL IN; Style Designator: PLAIN THREADED; Body Inside Diameter: 0.078 INCHES NOMINAL IN; Nominal Thread Size: 0.125 INCHES SINGLE THREADED PORTION IN. 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.