0020-GO3-MC0020

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-456-6904

Item Name Code

05488

Assigment Date

06/23/1998 (28 years ago)

A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see axle(1), shouldered. For items not having any of the above conditions see pin, shoulder, headless. Excludes:shaft(1), straight; and axle(1), straight.

automatic valve operation method, poppet flow control device, chromium surface treatment, right-hand 2nd end thread direction, copper alloy body material

Product Characteristics

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

Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Valve Operation Method: automatic
Material: copper alloy body
Surface Treatment: chromium
Style Designator: angle

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
0020-G03-MG0020	Safety Relief Valve
0020-GO3-MC0020	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-456-6904?

The FSCG of the NSN 4820-01-456-6904 is 4820

Does the NSN 4820-01-456-6904 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-456-6904 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 4820-01-456-6904 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-456-6904 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 4820-01-456-6904 was assigned to the Federal Catalog?

It was assigned 28 years ago, on Tue, Jun 23, 1998