The Seat,valve, cataloged under National Stock Number 4820-00-399-2880, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Spirax Sarco Inc Dba Spirax Sarco. Government technical data includes 13 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-399-2880 |
| Primary Part Number | 42983 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Spirax Sarco Inc Dba Spirax Sarco |
| Status | ACTIVE |
| Nominal Thread Size | 1.000 INCHES SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Thread Series Designator | UNJEF SINGLE THREADED PORTION |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Flange Seat to Disk End Height | 0.115 INCHES NOMINAL IN |
| Body Inside Diameter | 0.500 INCHES NOMINAL IN |
| Flange Diameter | 1.250 INCHES NOMINAL IN |
| Seat Angle in Deg | 30.000 NOMINAL |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Under Flange Height | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Seating Surface Shape | ANGULAR |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 42983 PRIMARY | Spirax Sarco Inc Dba Spirax Sarco (USA) |
NSN 4820-00-399-2880 is a Seat,valve, manufactured by Spirax Sarco Inc Dba Spirax Sarco, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-399-2880 has 1 cross-referenced part number: 42983 (Spirax Sarco Inc Dba Spirax Sarco).
There are 4 known substitutes for 4820-00-399-2880: 5950-01-031-7529, 5962-01-088-9861, 5950-01-096-8102 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 42983: Nominal Thread Size: 1.000 INCHES SINGLE THREADED PORTION IN; Style Designator: THREADED FLANGED; Thread Series Designator: UNJEF SINGLE THREADED PORTION; Surface Treatment: PASSIVATE OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.