Valve Seat

Model / MPN: 20129 PIECE 4 | NSN: 4820-01-199-9208

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

4820-01-199-9208

Sold in multiples of

1 EA

DEMIL

DEMIL/MLI

Thread Class

2a single threaded portion

Thread Length

2.250 inches single threaded portion

Overall Height

2.625 inches

Body Inside Diameter

Between 2.999 inches and 3.001 inches

Seat Angle In Deg

45.000

Thready Qty Per Inch (tpi)

14 single threaded portion

Thread Size

3.688 inches single threaded portion

Seating Surface Shape

Angular

Criticality Code Justification

Zzzy

Material

Nickel alloy

Material Specification

Qq-n-288 federal specification single material response

Style Designator

B5 plain threaded

Thread Series Designator

Uns 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

20129 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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ISO 9001:2015 + AS9120B
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20129 PIECE 4 Cross Reference

A7466.001.128