Valve Seat

Model / MPN: 1865 | NSN: 4820-00-074-7198

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

4820-00-074-7198

Sold in multiples of

1 EA

DEMIL

Thread Class

2a single threaded portion

Thread Length

0.375 inches single threaded portion

Flange Diameter

2.750 inches

Body Inside Diameter

Between 2.005 inches and 2.007 inches

Flange Seat To Disk End Height

0.438 inches

Under Flange Height

3.375 inches

Seat Angle In Deg

58.000

Thready Qty Per Inch (tpi)

14 single threaded portion

Thread Size

2.500 inches single threaded portion

Seating Surface Shape

Angular

Material

Steel

Style Designator

Threaded flanged

Thread Series Designator

Uns single threaded portion

1865 Series Parts

Pricing and Availability

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1865 Cross Reference

1360DPC21
369
1865