The Seat,valve, cataloged under National Stock Number 4820-01-263-3108, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references 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 | 4820-01-263-3108 |
| Primary Part Number | 255584 PIECE 27 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Body Outside Diameter | 2.125 INCHES NOMINAL IN |
| Seating Surface Shape | RADIAL |
| Style Designator | PLAIN |
| Material | PLASTIC OVERALL |
| Seat Radius | 0.469 INCHES NOMINAL IN |
| Body Inside Diameter | 1.250 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 255584 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 255584 PIECE 27 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 258760 ITEM 34 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 4820-01-263-3108 is a Seat,valve, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-263-3108 has 3 cross-referenced part numbers: 255584 (Huntington Ingalls Inc Div Newport News Shipbuilding), 255584 PIECE 27 (Huntington Ingalls Inc Div Newport News Shipbuilding), 258760 ITEM 34 (Huntington Ingalls Inc Div Newport News Shipbuilding).
There are 4 known substitutes for 4820-01-263-3108: 4820-00-319-5668, 4820-00-319-5669, 5895-01-007-9580 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 255584 PIECE 27: Body Outside Diameter: 2.125 INCHES NOMINAL IN; Overall Height: 0.375 INCHES NOMINAL IN; Seating Surface Shape: RADIAL; Style Designator: PLAIN. 7 total characteristics are documented in the Federal Logistics Information System.