4820-00-923-6852

Find complete technical information, availability, and procurement data for: 4820-00-923-6852
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-923-6852

Item Name Code

22113

Assigment Date

01/20/1966 (60 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.

3.000 inches nominal body outside diameter, 1.708 inches minimum and 1.718 inches maximum body inside diameter, 4.125 inches minimum and 4.126 inches maximum flange diameter, 1.708 inches minimum and 1.718 inches maximum taper minor diameter, 0.620 inches minimum and 0.630 inches maximum seat radius

Product Characteristics

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

Flange Diameter: 4.125 inches minimum and 4.126 inches maximum
Taper Minor Diameter: 1.708 inches minimum and 1.718 inches maximum
Body Outside Diameter: 3.000 inches nominal
Body Inside Diameter: 1.708 inches minimum and 1.718 inches maximum
Seat Radius: 0.620 inches minimum and 0.630 inches maximum
Flange Seat To Disk End Height: 1.625 inches minimum and 1.627 inches maximum
Under Flange Height: 1.873 inches minimum and 1.875 inches maximum
Seating Surface Shape: radial
Material: cobalt alloy face
Material Document And Classification: mil-r-17131,type mil-rcocr-a mil spec single material response face
Style Designator: plain flanged

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
894B432PC2	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-923-6852?

The FSCG of the NSN 4820-00-923-6852 is 4820

Does the NSN 4820-00-923-6852 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-923-6852 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 4820-00-923-6852 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-923-6852 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 4820-00-923-6852 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Thu, Jan 20, 1966