4820-00-406-6921

Find complete technical information, availability, and procurement data for: 4820-00-406-6921
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-406-6921

Item Name Code

77777

Assigment Date

04/17/1970 (56 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.

steel excetp for rubber o-ring,0.875 in. id of seal,1.250 in. od of clapper ring,0.250 in. thk,1.688 in. o/a general characteristics item description

Product Characteristics

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

General Characteristics Item Description: steel excetp for rubber o-ring,0.875 in. id of seal,1.250 in. od of clapper ring,0.250 in. thk,1.688 in. o/a

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
NS3482-075B	Clapper Assembly

FAQs

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

What is the FSCG of the NSN 4820-00-406-6921?

The FSCG of the NSN 4820-00-406-6921 is 4820

Does the NSN 4820-00-406-6921 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-406-6921 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 4820-00-406-6921 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-406-6921 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 4820-00-406-6921 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Fri, Apr 17, 1970