668158

View detailed technical data, stock status, and sourcing information for: 668158
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-191-9061

Item Name Code

77777

Assigment Date

03/04/1970 (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.

stainless steel ams5613; temper at 525 deg f to produce hardness of rockwell c35-4o or equiv; 0.851 in. min 0.857 in. max inside dia 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: stainless steel ams5613; temper at 525 deg f to produce hardness of rockwell c35-4o or equiv; 0.851 in. min 0.857 in. max inside dia

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
668158	Check Valve Liner

FAQs

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

What is the FSCG of the NSN 4820-00-191-9061?

The FSCG of the NSN 4820-00-191-9061 is 4820

Does NSN 4820-00-191-9061 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 4820-00-191-9061 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-191-9061 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 4820-00-191-9061 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Wed, Mar 4, 1970