595-6404638-18

View detailed technical data, stock status, and sourcing information for: 595-6404638-18
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-390-3629

Item Name Code

35917

Assigment Date

05/17/1994 (32 years ago)

A specifically designed and tested item normally divided into two or more pieces with matched ends for precision installation. It forms a tight seal around a steam turbine shaft. Includes items such as seal rings, turbine rings, springs, pins, and the like. Excludes:packing assembly; seal ring, metal.

4 holes 0.188 in. dia, 1.000 in. hole circle special features, nickel alloy material, 1.872 inches nominal outside diameter

Product Characteristics

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

Outside Diameter: 1.872 inches nominal
Special Features: 4 holes 0.188 in. dia, 1.000 in. hole circle
Material: nickel alloy

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
595-6404638 FIN	Valve Disk Retainer
595-6404638-18	Valve Disk Retainer

FAQs

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

What is the FSCG of the NSN 4820-01-390-3629?

The FSCG of the NSN 4820-01-390-3629 is 4820

Does the NSN 4820-01-390-3629 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-390-3629 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 4820-01-390-3629 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-390-3629 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 4820-01-390-3629 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Tue, May 17, 1994