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NSN 4820-01-187-1255

Seat Retainer

About this product

5.687 inches inside diameter, 6.062 inches outside diameter, nickel alloy material, material specification: qq-n-288 federal specification single material response.

Manufacturer part number 2640-398X2 PIECE 9 for national stock number 4820011871255.

Datasheet

  • Product description

    Valve Seat Retainer NSN 4820-01-187-1255.

  • MPN or Model

    2640-398X2 PIECE 9

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    050855 - Cocks R Valves Etc Bbc Sub1
  • Unit Weight (Est.)
    2 lb
  • Inside Diameter
    5.687 inches
  • Outside Diameter
    6.062 inches
  • Material
    Nickel alloy
  • Material Specification
    Qq-n-288 federal specification single material response
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Valve Seat Retainer

An item of various shapes and cross-sections, that may be flanged and that is designed to fit over a valve seat, allowing proper positioning of the seat with a flow control device.

Mechanic Bill explains Seat Retainer

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NSN 4820011871255

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
2640-398X2 PIECE 9 Electric Boat Corporation
845-2109837 PIECE 9 Naval Ship Systems Command
2640-398X2 Electric Boat Corporation
845-2109837 Naval Ship Systems Command
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