4820-00-388-1421

Find complete technical information, availability, and procurement data for: 4820-00-388-1421
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-388-1421

Item Name Code

22113

Assigment Date

01/01/1963 (63 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.

0.500 inches nominal flange seat to disk end height, 0.877 inches minimum and 0.878 inches maximum body outside diameter, 1.595 inches minimum and 1.605 inches maximum flange diameter, 0.370 inches minimum and 0.380 inches maximum seat radius, 0.313 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.

Flange Diameter: 1.595 inches minimum and 1.605 inches maximum
Body Outside Diameter: 0.877 inches minimum and 0.878 inches maximum
Body Inside Diameter: 0.313 inches nominal
Seat Radius: 0.370 inches minimum and 0.380 inches maximum
Flange Seat To Disk End Height: 0.500 inches nominal
Under Flange Height: 0.625 inches nominal
Seating Surface Shape: radial
Material: chromium alloy body
Material: cobalt alloy face
Material Document And Classification: mil-r-17131,type mil-rcocr-a mil spec single material response face

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
1504432	Valve Seat
95J563PC176	Valve Seat
95J571PC34	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-388-1421?

The FSCG of the NSN 4820-00-388-1421 is 4820

Does the NSN 4820-00-388-1421 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-388-1421 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 4820-00-388-1421 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-388-1421 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 4820-00-388-1421 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963