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NSN 4820-01-178-8686

Valve Seat Insert

About this product

0.750 inches body inside diameter, 45.000 seat angle in deg, 18 single threaded portion thready qty per inch (tpi), seating surface shape: angular.

Manufacturer part number A7440.002.128SPCLN for national stock number 4820011788686.

Datasheet

  • Product description

    Valve Seat NSN 4820-01-178-8686.

  • MPN or Model

    A7440.002.128SPCLN

  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    050859 - Cocks R Valves Etc Chrome/nickel
  • Unit Weight (Est.)
    1.2 lb
  • Thread Class
    3a single threaded portion
  • Thread Length
    1.000 inches single threaded portion
  • Overall Height
    1.250 inches
  • Body Inside Diameter
    0.750 inches
  • Seat Angle In Deg
    45.000
  • Thready Qty Per Inch (tpi)
    18 single threaded portion
  • Thread Size
    1.125 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
    B5 plain threaded
  • Thread Series Designator
    Unef 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 4820011788686

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
A7440.002.128SPCLN Anderson Greenwood Lp
8731 PIECE 4 Anderson Greenwood Lp
20212FIND5 Anderson Greenwood Lp
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