The Seat,valve, cataloged under National Stock Number 4820-00-393-4347, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ashcroft Inc Dba Heise. 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-393-4347 |
| Primary Part Number | 20612 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Material | STEEL OVERALL |
| Style Designator | THREADED FLANGED |
| Seat Angle in Deg | 45.000 NOMINAL |
| Thread Quantity Per Inch | 16 SINGLE THREADED PORTION |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Nominal Thread Size | 2.750 INCHES SINGLE THREADED PORTION IN |
| Flange Seat to Disk End Height | 0.750 INCHES NOMINAL IN |
| Flange Diameter | 3.250 INCHES NOMINAL IN |
| Body Inside Diameter | 2.000 INCHES NOMINAL IN |
| Seating Surface Shape | ANGULAR |
| Under Flange Height | 0.844 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20612 PRIMARY | Ashcroft Inc Dba Heise (USA) |
NSN 4820-00-393-4347 is a Seat,valve, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-393-4347 has 1 cross-referenced part number: 20612 (Ashcroft Inc Dba Heise).
There are 10 known substitutes for 4820-00-393-4347: 5133-00-227-9672, 5365-00-784-5826, 4720-00-888-6075 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20612: Thread Series Designator: UN SINGLE THREADED PORTION; Material: STEEL OVERALL; Style Designator: THREADED FLANGED; Seat Angle in Deg: 45.000 NOMINAL. 13 total characteristics are documented in the Federal Logistics Information System.