The Seat,valve, cataloged under National Stock Number 4820-00-367-1460, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-367-1460 |
| Primary Part Number | N09821 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.406 INCHES NOMINAL IN |
| Flange Diameter | 1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN |
| Thread Length | 0.406 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Body Inside Diameter | 0.776 INCHES MINIMUM AND 0.786 INCHES MAXIMUM IN |
| Nominal Thread Size | 1.265 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.406 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 16 SINGLE THREADED PORTION |
| Material | STEEL CORROSION RESISTING OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| 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 |
|---|---|
| N09821 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 193F1-2 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
| 9821 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
| 09821 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-00-367-1460 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-367-1460 has 1 manufacturer part number on file: N09821 (Leslie Controls, Inc. Dba Leslie Controls Inc).
6 possible matches (shared part number, not a government interchangeability claim): 5930-00-565-9367, 5998-00-719-7232, 6530-01-264-0356. Verify interchangeability with system specifications before substitution.
Key specifications for N09821: Flange Seat to Disk End Height: 0.406 INCHES NOMINAL IN; Flange Diameter: 1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN; Thread Length: 0.406 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: THREADED FLANGED. 13 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.