4820-00-057-6429

Find complete technical information, availability, and procurement data for: 4820-00-057-6429
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-057-6429

Item Name Code

22113

Assigment Date

06/06/1967 (59 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.

0.250 inches nominal overall height, 0.025 inches nominal seat radius, 0.498 inches minimum and 0.500 inches maximum body outside diameter, 0.510 inches minimum and 0.515 inches maximum flange diameter, 0.374 inches minimum and 0.376 inches maximum 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: 0.510 inches minimum and 0.515 inches maximum
Overall Height: 0.250 inches nominal
Body Outside Diameter: 0.498 inches minimum and 0.500 inches maximum
Body Inside Diameter: 0.374 inches minimum and 0.376 inches maximum
Seat Radius: 0.025 inches nominal
Flange Seat To Disk End Height: 0.060 inches nominal
Under Flange Height: 0.195 inches nominal
Seating Surface Shape: radial
Material: plastic overall
Material Document And Classification: mil-m-20693,comp a,type 1 mil spec single material response overall
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
180714-0081	Valve Seat
180714-81	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-057-6429?

The FSCG of the NSN 4820-00-057-6429 is 4820

Does the NSN 4820-00-057-6429 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-057-6429 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 4820-00-057-6429 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-057-6429 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 4820-00-057-6429 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Tue, Jun 6, 1967