The Seat,valve, cataloged under National Stock Number 4820-01-004-2918, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-004-2918 |
| Primary Part Number | 843821 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Body Inside Diameter | 0.188 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Thread Series Designator | NPT SINGLE THREADED PORTION |
| Surface Treatment | OXIDE OVERALL |
| Style Designator | PLAIN THREADED |
| Nominal Thread Size | 0.250 INCHES SINGLE THREADED PORTION IN |
| Seating Surface Shape | ANGULAR |
| Seat Angle in Deg | 45.000 NOMINAL |
| Thread Length | 0.281 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-004-2918 is a Seat,valve, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-004-2918 has 2 cross-referenced part numbers: 843937PC2 (Eaton Aerospace, Llc Dba Jackson South), 843821 (Eaton Aerospace, Llc Dba Jackson South).
There are 2 known substitutes for 4820-01-004-2918: 5962-00-252-9750, 8145-01-606-6700. Verify interchangeability with system specifications before substitution.
Key specifications for 843821: Body Inside Diameter: 0.188 INCHES NOMINAL IN; Material: STEEL OVERALL; Thread Series Designator: NPT SINGLE THREADED PORTION; Surface Treatment: OXIDE OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.