Valve Seat

Model / MPN: 2643-1002-63 FN A5 | NSN: 4820-01-442-0424

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

4820-01-442-0424

Sold in multiples of

1 EA

DEMIL

Thread Class

3a single threaded portion

Thread Length

0.650 inches single threaded portion

Flange Diameter

5.750 inches

Body Outside Diameter

5.360 inches

Body Inside Diameter

4.625 inches

End Application

Seawolf class ssn

Flange Seat To Disk End Height

0.600 inches

Under Flange Height

0.775 inches

Thready Qty Per Inch (tpi)

12 single threaded portion

Hardness Rating

115.0 rockwell r seat

Thread Size

5.500 inches single threaded portion

Seating Surface Shape

Flat

Material

Plastic polytetrafluoroethylene seat

Style Designator

Plain flanged

Thread Series Designator

Un single threaded portion

2643 Series Parts

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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2643-1002-63 FN A5 Cross Reference

218020208
801-6556655 FIND A5
801-6556655-A5
2643-1002-63
6556655
218020208
801-6556655 FIND A5
801-6556655-A5
6556655
2643-1002-63