The Seat,valve, cataloged under National Stock Number 4820-01-146-5903, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tate Andale, Llc. Government technical data includes 5 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 | 4820-01-146-5903 |
| Primary Part Number | 16777-1 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Tate Andale, Llc |
| Status | ACTIVE |
| Style Designator | PLAIN |
| Seating Surface Shape | ANGULAR |
| Seat Angle in Deg | 45.000 NOMINAL |
| Body Inside Diameter | 4.000 INCHES NOMINAL IN |
| Body Outside Diameter | 4.875 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-146-5903 is a Seat,valve, manufactured by Tate Andale, Llc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-146-5903 has 2 cross-referenced part numbers: A-16777-1 (Tate Andale, Llc), 16777-1 (Tate Andale, Llc).
There are 2 known substitutes for 4820-01-146-5903: 5935-00-356-3922, 5998-01-289-8554. Verify interchangeability with system specifications before substitution.
Key specifications for 16777-1: Style Designator: PLAIN; Seating Surface Shape: ANGULAR; Seat Angle in Deg: 45.000 NOMINAL; Body Inside Diameter: 4.000 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.