The Seat,valve, cataloged under National Stock Number 4820-01-504-7557, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-504-7557 |
| Primary Part Number | 264080101-0016 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Electric Boat Corporation Div General Dynamics Electric Boat |
| Status | ACTIVE |
| Seat Radius | 0.281 INCHES NOMINAL IN |
| Body Inside Diameter | 0.562 INCHES NOMINAL IN |
| Body Outside Diameter | 1.0620 INCHES NOMINAL IN |
| Seating Surface Shape | RADIAL |
| Style Designator | PLAIN |
| Material Document and Classification | MD-71GG MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Material | PLASTIC POLYURETHANE OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 563-7286781 | Naval Sea Systems Command (USA) |
| 2640-801X01 ITEM 16 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 264080101-0016 PRIMARY | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| H684-1505-92 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 2640-801X1 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 563-7286781-92 | Naval Sea Systems Command (USA) |
| MD-71GG | Ronci Machine Co (USA) |
NSN 4820-01-504-7557 is a Seat,valve, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-504-7557 has 7 cross-referenced part numbers: 563-7286781 (Naval Sea Systems Command), 2640-801X01 ITEM 16 (Electric Boat Corporation Div General Dynamics Electric Boat), 264080101-0016 (Electric Boat Corporation Div General Dynamics Electric Boat), H684-1505-92 (Electric Boat Corporation Div General Dynamics Electric Boat), 2640-801X1 (Electric Boat Corporation Div General Dynamics Electric Boat) and 2 more.
There are 8 known substitutes for 4820-01-504-7557: 4820-00-824-5687, 4820-01-061-7138, 9330-01-336-7096 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 264080101-0016: Seat Radius: 0.281 INCHES NOMINAL IN; Body Inside Diameter: 0.562 INCHES NOMINAL IN; Body Outside Diameter: 1.0620 INCHES NOMINAL IN; Seating Surface Shape: RADIAL. 10 total characteristics are documented in the Federal Logistics Information System.