73423 4IN ITEM 3

View detailed technical data, stock status, and sourcing information for: 73423 4IN ITEM 3
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-284-2246

Item Name Code

22113

Assigment Date

08/19/1988 (37 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.

4.563 inches nominal flange diameter, angular seating surface shape, 3.500 inches minimum and 3.505 inches maximum body inside diameter, 0.932 inches minimum and 0.937 inches maximum overall height, 4.313 inches nominal body outside diameter

Product Characteristics

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

Flange Diameter: 4.563 inches nominal
Overall Height: 0.932 inches minimum and 0.937 inches maximum
Body Outside Diameter: 4.313 inches nominal
Body Inside Diameter: 3.500 inches minimum and 3.505 inches maximum
Seating Surface Shape: angular
Special Features: with stellite no. 6
Material: steel corrosion resisting seat

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
73423 4IN ITEM 3	Valve Seat
73423-20	Valve Seat
7543-001-002	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-284-2246?

The FSCG of the NSN 4820-01-284-2246 is 4820

Does the NSN 4820-01-284-2246 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-284-2246 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 4820-01-284-2246 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-284-2246 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 4820-01-284-2246 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Fri, Aug 19, 1988