The Seat,valve, cataloged under National Stock Number 4820-01-375-8078, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allied Defense Industries, Llc Dba Ams Distribution. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-375-8078 |
| Primary Part Number | 2574W106 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Allied Defense Industries, Llc Dba Ams Distribution |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.063 INCHES NOMINAL IN |
| Flange Diameter | 0.482 INCHES NOMINAL IN |
| Thread Length | 0.120 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Body Inside Diameter | 0.188 INCHES NOMINAL IN |
| Nominal Thread Size | 0.312 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.270 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 36 SINGLE THREADED PORTION |
| Material | STEEL OVERALL |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| Seating Surface Shape | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-375-8078 is a Seat,valve, manufactured by Allied Defense Industries, Llc Dba Ams Distribution, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-375-8078 has 2 manufacturer part numbers on file: 2574W106 (Honeywell Aerospace Yeovil Div Aerospace -Yeovil), 2574W106 (Allied Defense Industries, Llc Dba Ams Distribution).
Key specifications for 2574W106: Flange Seat to Disk End Height: 0.063 INCHES NOMINAL IN; Flange Diameter: 0.482 INCHES NOMINAL IN; Thread Length: 0.120 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: THREADED FLANGED. 12 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.
NSN 4820-01-375-8078 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.