Valve Seat

Model / MPN: 975203-4 | NSN: 4820-00-008-8913

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.

Product Details

NATO Stock Number

4820-00-008-8913

Sold in multiples of

1 EA

DEMIL

Thread Class

2a single threaded portion

Thread Length

0.800 inches first threaded portion and 0.820 inches first threaded portion

Flange Diameter

Between 0.282 inches and 0.286 inches

Overall Height

Between 0.780 inches and 0.800 inches

Body Outside Diameter

Between 0.243 inches and 0.250 inches

Body Inside Diameter

Between 0.145 inches and 0.155 inches

Seat Angle In Deg

Between 55.000 and 65.000

Hardness Rating

40.0 rockwell c body and 47.0 rockwell c body

Thread Size

0.250 inches single threaded portion

Seating Surface Shape

Angular

Material

Steel

Thread Series Designator

Unf single threaded portion

975203 Series Parts

Pricing and Availability

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975203-4 Cross Reference

975203-4