4820-00-794-2776

Find complete technical information, availability, and procurement data for: 4820-00-794-2776
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-794-2776

Item Name Code

22113

Assigment Date

01/01/1960 (66 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.

5.562 inches nominal body outside diameter, 4.295 inches minimum and 4.297 inches maximum body inside diameter, 0.938 inches minimum and 0.940 inches maximum flange seat to disk end height, 1.500 inches nominal seat radius, 6.750 inches minimum and 6.751 inches maximum flange 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: 6.750 inches minimum and 6.751 inches maximum
Body Outside Diameter: 5.562 inches nominal
Body Inside Diameter: 4.295 inches minimum and 4.297 inches maximum
Seat Radius: 1.500 inches nominal
Flange Seat To Disk End Height: 0.938 inches minimum and 0.940 inches maximum
Under Flange Height: 2.000 inches nominal
Seating Surface Shape: radial
Material: steel overall
Material Document And Classification: qq-s-637 fed 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
356C690-4	Valve Seat
439B750PC4	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-794-2776?

The FSCG of the NSN 4820-00-794-2776 is 4820

Does the NSN 4820-00-794-2776 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-794-2776 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 4820-00-794-2776 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-794-2776 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 4820-00-794-2776 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960