4820-00-203-3263

Find complete technical information, availability, and procurement data for: 4820-00-203-3263
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-203-3263

Item Name Code

20520

Assigment Date

01/01/1963 (63 years ago)

3b all ends thread class, spring disk loading method, poppet flow control device, right-hand all ends thread direction, 0.020 inches nominal aperture diameter

Product Characteristics

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

Thread Class: 3b all ends
Thread Direction: right-hand all ends
Aperture Diameter: 0.020 inches nominal
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: gasket seal (boss) all ends
Valve Operation Method: automatic
Connection Type: threaded internal boss all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.437 inches all ends
Material: steel corrosion resisting overall
Style Designator: straight thru
Thread Series Designator: unf all ends

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
1116558481	Restrictor Check Valve
2-8980300-12	Restrictor Check Valve
240-8980300-12	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-203-3263?

The FSCG of the NSN 4820-00-203-3263 is 4820

Does the NSN 4820-00-203-3263 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-203-3263 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 4820-00-203-3263 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-203-3263 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 4820-00-203-3263 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963