40CS5

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Federal Supply Group

Pumps and Compressors

Federal Supply Classification

4310 Compressors and Vacuum Pumps

National Stock Number

4310-00-423-2999

Item Name Code

77777

Assigment Date

01/01/1961 (65 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,4.750 in. dia,4.375 in. dia recessed face,0.125 in. thd holes 2 places,six opening slots both sides,two mtg screws 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,4.750 in. dia,4.375 in. dia recessed face,0.125 in. thd holes 2 places,six opening slots both sides,two mtg screws

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
1R150-200S76	Inlet Valve Stop Plate
40CS5	Inlet Valve Stop Plate
W1540PP	Inlet Valve Stop Plate

FAQs

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

What is the FSCG of the NSN 4310-00-423-2999?

The FSCG of the NSN 4310-00-423-2999 is 4310

Does NSN 4310-00-423-2999 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 4310-00-423-2999 contain precious materials?

Precious metal content is unknown

Does NSN 4310-00-423-2999 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 4310-00-423-2999 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961