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NSN 4820-01-259-0505

Valve Seat Insert

About this product

Between 0.932 inches and 0.942 inches flange diameter, between 0.511 inches and 0.521 inches body inside diameter, 0.117 mils and 0.127 centimeters flange seat to disk end height, under flange height: between 0.311 inches and 0.321 inches .

Manufacturer part number 845-2445100 PC. 12 for national stock number 4820012590505.

Datasheet

  • Product description

    Valve Seat NSN 4820-01-259-0505.

  • MPN or Model

    845-2445100 PC. 12

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    051080 - Faucets, Bibcocks, Gates Valves
  • Unit Weight (Est.)
    0.3 lb
  • Thread Class
    3a single threaded portion
  • Thread Length
    0.344 inches single threaded portion
  • Flange Diameter
    Between 0.932 inches and 0.942 inches
  • Body Inside Diameter
    Between 0.511 inches and 0.521 inches
  • Flange Seat To Disk End Height
    0.117 mils and 0.127 centimeters
  • Under Flange Height
    Between 0.311 inches and 0.321 inches
  • Seat Angle In Deg
    45.000
  • Seal Accommodation Type
    Grooved
  • Thready Qty Per Inch (tpi)
    24 single threaded portion
  • Thread Size
    0.766 inches single threaded portion
  • Seating Surface Shape
    Angular
  • Criticality Code Justification
    Zzzy
  • Material
    Nickel alloy
  • Material Specification
    Qq-n-281 federal specification single material response
  • Style Designator
    Threaded flanged
  • Thread Series Designator
    Uns single threaded portion
  • Reference Number Differentiating Characteristics
    Material will be in accordance with ships parts control center activity hx quality control, manufacturing and testing specifications
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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 4820012590505

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
845-2445100 PC. 12 Naval Ship Systems Command
2620-902X6PC4,0.500IN Electric Boat Corporation
2632-903X1PC12,0.500IN Electric Boat Corporation
845-2445100PC12,0.500IN Naval Ship Systems Command
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