4820-00-337-1046

Find complete technical information, availability, and procurement data for: 4820-00-337-1046
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-337-1046

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.

0.623 inches minimum and 0.625 inches maximum flange seat to disk end height, 0.620 inches minimum and 0.630 inches maximum seat radius, 1.706 inches minimum and 1.708 inches maximum body inside diameter, 3.625 inches nominal body outside diameter, 4.250 inches minimum and 4.251 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: 4.250 inches minimum and 4.251 inches maximum
Body Outside Diameter: 3.625 inches nominal
Body Inside Diameter: 1.706 inches minimum and 1.708 inches maximum
Seat Radius: 0.620 inches minimum and 0.630 inches maximum
Flange Seat To Disk End Height: 0.623 inches minimum and 0.625 inches maximum
Under Flange Height: 2.313 inches nominal
Seating Surface Shape: radial
Material: cobalt alloy seat
Material Document And Classification: mil-r-17131,type mil-rcocr-a mil spec single material response seat
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
137B367-1	Valve Seat
7089B19PC45	Valve Seat
B3169686PC1	Valve Seat
J3169677PC45	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-337-1046?

The FSCG of the NSN 4820-00-337-1046 is 4820

Does the NSN 4820-00-337-1046 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-337-1046 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 4820-00-337-1046 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-337-1046 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 4820-00-337-1046 was assigned to the Federal Catalog?

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