PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2640-163 2,4 3/4INCHParts Kit,ball Valve

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 4820-01-208-2089 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-208-2089 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-208-2089. Primary manufacturer part number: 2640-163 2,4 3/4INCH.
Features
  • Parts Kit,ball Valve — FSC 4820
  • Component Quantity: 3
  • Supply Items and Quantities: 3/4 IN. BALL 1; 3/4 IN. SEAT 2 IN
  • 5 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 Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-208-2089, 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 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-208-2089
Primary Part Number2640-163 2,4 3/4INCH
Item NameParts Kit,ball Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Component Quantity3
Supply Items and Quantities3/4 IN. BALL 1; 3/4 IN. SEAT 2 IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4820-01-161-64952640-163 PIECE 1 AND 3 INTERCHANGEABLE
Parts Kit,ball Valve
Electric Boat Corporation Div General Dynamics Electric Boat
5340-01-701-2717264016-3 INTERCHANGEABLE
Standoff,threaded,spacing
Lockheed Martin Corp
Cross-Reference Index
Part NumberManufacturer
845-2007662 PC 2, PC 4,3/4 IN. Naval Ship Systems Command (USA)
2640-163 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
845-2007662 Naval Ship Systems Command (USA)
2640-163 2,4 3/4INCH PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2640-163 PIECE Electric Boat Corporation Div General Dynamics Electric Boat (USA)
Related Parts
4820-01-161-6495INTERCHANGEABLE
PARTS KIT,BALL VALVE
2640-163 PIECE 1 AND 3
5340-01-701-2717INTERCHANGEABLE
STANDOFF,THREADED,SPACING
264016-3

Frequently Asked Questions

What is NSN 4820-01-208-2089?

NSN 4820-01-208-2089 is a Parts Kit,ball 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 4820-01-208-2089?

NSN 4820-01-208-2089 has 5 cross-referenced part numbers: 845-2007662 PC 2, PC 4,3/4 IN. (Naval Ship Systems Command), 2640-163 (Electric Boat Corporation Div General Dynamics Electric Boat), 845-2007662 (Naval Ship Systems Command), 2640-163 2,4 3/4INCH (Electric Boat Corporation Div General Dynamics Electric Boat), 2640-163 PIECE (Electric Boat Corporation Div General Dynamics Electric Boat).

What NSN replaces 4820-01-208-2089?

There are 2 known substitutes for 4820-01-208-2089: 4820-01-161-6495, 5340-01-701-2717. Verify interchangeability with system specifications before substitution.

What are the specifications of 2640-163 2,4 3/4INCH?

Key specifications for 2640-163 2,4 3/4INCH: Component Quantity: 3; Supply Items and Quantities: 3/4 IN. BALL 1; 3/4 IN. SEAT 2 IN. 2 total characteristics are documented in the Federal Logistics Information System.

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