PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2640-801X1 ITEM12Seat,valve

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 4820-01-724-2883 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-724-2883 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-724-2883. Primary manufacturer part number: 2640-801X1 ITEM12.
Features
  • Seat,valve — FSC 4820
  • 8 verified cross-references
  • Primary manufacturer: Electric Boat Corporation Div General Dynamics Electric Boat
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-724-2883, 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. This item has 8 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersElectric Boat Corporation Div General Dynamics Electric Boat (CAGE 96169); Naval Inventory Control Point Mechanicsburg (CAGE 03950); Naval Sea Systems Command (CAGE 53711)
Technical Specifications
ParameterValue
NSN4820-01-724-2883
Primary Part Number2640-801X1 ITEM12
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-00-824-5687 INTERCHANGEABLE
Seat,valve
Cross-Reference Index
Part NumberManufacturer
2640-801X1 ITEM12 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
845-8616970-ITEM NO-11Q3 Naval Inventory Control Point Mechanicsburg (USA)
845-7285297 ITEM 12Q3 Naval Inventory Control Point Mechanicsburg (USA)
2644-857-01-ITEM NO-11 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
845-8616970-ITEM NO-11 Naval Sea Systems Command (USA)
2640-801X1 ITEM12Q3 Naval Inventory Control Point Mechanicsburg (USA)
845-7285297 ITEM 12 Naval Sea Systems Command (USA)
2644-857-01-ITEM NO-11Q3 Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
4820-00-824-5687INTERCHANGEABLE
SEAT,VALVE

Frequently Asked Questions

What is NSN 4820-01-724-2883?

NSN 4820-01-724-2883 is a Seat,valve, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-724-2883?

NSN 4820-01-724-2883 has 8 cross-referenced part numbers: 2640-801X1 ITEM12 (Electric Boat Corporation Div General Dynamics Electric Boat), 845-8616970-ITEM NO-11Q3 (Naval Inventory Control Point Mechanicsburg), 845-7285297 ITEM 12Q3 (Naval Inventory Control Point Mechanicsburg), 2644-857-01-ITEM NO-11 (Electric Boat Corporation Div General Dynamics Electric Boat), 845-8616970-ITEM NO-11 (Naval Sea Systems Command) and 3 more.

What NSN replaces 4820-01-724-2883?

There is 1 known substitute for 4820-01-724-2883: 4820-00-824-5687. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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