Valve Seat

Model / MPN: 311904-2 | NSN: 4820-00-009-0392

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

4820-00-009-0392

Sold in multiples of

1 EA

DEMIL

Flange Diameter

Between 0.374 inches and 0.375 inches

Body Outside Diameter

Between 0.264 inches and 0.269 inches

Body Inside Diameter

Between 0.058 inches and 0.060 inches

Flange Seat To Disk End Height

0.035 mils and 0.040 centimeters

Under Flange Height

Between 0.105 inches and 0.110 inches

Seat Angle In Deg

Between 59.000 and 61.000

Seating Surface Shape

Angular

Material

Steel

Style Designator

Plain flanged

311904 Series Parts

Pricing and Availability

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311904-2 Cross Reference

311904-2
311904-2