Valve Seat

Model / MPN: 8538 PIECE 20 | NSN: 4820-01-218-8028

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

4820-01-218-8028

Sold in multiples of

1 EA

DEMIL

DEMIL/MLI

Thread Class

2a single threaded portion

Thread Length

1.000 inches single threaded portion

Overall Height

1.250 inches

Taper Length

0.031 inches

Taper Minor Diameter

0.750 inches

Taper Major Diameter

1.000 inches

Body Inside Diameter

1.047 inches

Seat Angle In Deg

0.750

Thready Qty Per Inch (tpi)

18 single threaded portion

Thread Size

1.125 inches single threaded portion

Seating Surface Shape

Angular

Criticality Code Justification

Zzzy

Material

Copper alloy

Material Specification

Qq-n-281 federal specification single material response

Style Designator

B5 plain threaded

Thread Series Designator

Unef 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

8538 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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8538 PIECE 20 Cross Reference

A7410.001.127
8538PC20 SPCLN
A7410.002.127