803-4384536-45A-85

View detailed technical data, stock status, and sourcing information for: 803-4384536-45A-85
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-268-3278

Item Name Code

22113

Assigment Date

11/27/1987 (38 years ago)

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.

0.110 inches nominal under flange height, 20 single threaded portion thread quantity per inch, 3a single threaded portion thread class, 0.234 inches nominal flange seat to disk end height, 0.844 inches nominal body inside diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3a single threaded portion
Body Inside Diameter: 0.844 inches nominal
Flange Seat To Disk End Height: 0.234 inches nominal
Under Flange Height: 0.110 inches nominal
Thread Quantity Per Inch: 20 single threaded portion
Nominal Thread Size: 1.188 inches single threaded portion
Seating Surface Shape: flat
Material: nickel alloy overall
Material Document And Classification: qq-n-288 mil spec single material response overall
Thread Series Designator: un single threaded portion

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
803-4384536-45A-13	Valve Seat
803-4384536-45A-85	Valve Seat
803438453611B13	Valve Seat

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-01-268-3278?

The FSCG of the NSN 4820-01-268-3278 is 4820

Does the NSN 4820-01-268-3278 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-268-3278 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4820-01-268-3278 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-268-3278 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4820-01-268-3278 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Fri, Nov 27, 1987