The Seat,valve, cataloged under National Stock Number 4820-00-116-9781, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-116-9781 |
| Primary Part Number | 21241 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Seating Surface Shape | FLAT |
| Under Flange Height | 0.813 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Thread Length | 0.750 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Thread Quantity Per Inch | 14 SINGLE THREADED PORTION |
| Nominal Thread Size | 6.500 INCHES SINGLE THREADED PORTION IN |
| Body Inside Diameter | 4.000 INCHES NOMINAL IN |
| Flange Diameter | 6.875 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| Flange Seat to Disk End Height | 0.094 INCHES NOMINAL IN |
| Style Designator | THREADED FLANGED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 21241 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
NSN 4820-00-116-9781 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-116-9781 has 1 cross-referenced part number: 21241 (Leslie Controls, Inc. Dba Leslie Controls Inc).
There are 8 known substitutes for 4820-00-116-9781: 5998-00-172-2275, 5110-00-268-1258, 5315-00-486-4077 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21241: Seating Surface Shape: FLAT; Under Flange Height: 0.813 INCHES NOMINAL IN; Thread Class: 2A SINGLE THREADED PORTION A; Thread Length: 0.750 INCHES NOMINAL SINGLE THREADED PORTION IN. 13 total characteristics are documented in the Federal Logistics Information System.