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NSN 4820-00-923-2491

Valve Seat Insert

About this product

Between 0.344 inches and 0.346 inches body inside diameter, 0.218 inches seat radius, radial seating surface shape, material: copper alloy .

Manufacturer part number 6820556-1 for national stock number 4820009232491.

Datasheet

  • Product description

    Valve Seat NSN 4820-00-923-2491.

  • MPN or Model

    6820556-1

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    095190 - Hardware, NOI Sub 9
  • Unit Weight (Est.)
    0.1 lb
  • Overall Height
    Between 0.170 inches and 0.190 inches
  • Body Outside Diameter
    Between 0.659 inches and 0.660 inches
  • Body Inside Diameter
    Between 0.344 inches and 0.346 inches
  • Seat Radius
    0.218 inches
  • Seating Surface Shape
    Radial
  • Material
    Copper alloy
  • Material Specification
    Ams4640 assn standard single material response
  • Style Designator
    Plain
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Valve Seat

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

Mechanic Bill explains Valve Seat Insert

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NSN 4820009232491

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
6820556-1 Rolls-royce Corporation
6820556 Rolls-royce Corporation
6820556 Allison Transmission, Inc.
6820556-1 Allison Transmission, Inc.
Stock Check
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