4820-00-626-2590

Find complete technical information, availability, and procurement data for: 4820-00-626-2590
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-626-2590

Item Name Code

20520

Assigment Date

01/01/1963 (63 years ago)

right-hand 1st end thread direction, 3a 1st end thread class, 0.068 inches nominal aperture diameter, right-hand 2nd end thread direction, 3a 2nd end thread class

Product Characteristics

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

Thread Class: 3a 1st end
Thread Class: 3a 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Aperture Diameter: 0.068 inches nominal
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 200.0 fahrenheit single response
Connection Style: flared (tube) 2nd end
Connection Style: flareless 1st end
Valve Operation Method: automatic
Connection Type: threaded external tube 2nd end
Connection Type: threaded external tube 1st end
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 18 2nd end
Thread Quantity Per Inch: 20 1st end
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.437 inches 1st end
Nominal Thread Size: 0.562 inches 2nd end
Seat Angle: 12.0 degrees 1st end
Seat Angle: 37.0 degrees 2nd end
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Nominal Outside Diameter Tube Accommodated: 0.375 inches 2nd end
Material: rubber synthetic packing
Material: steel corrosion resisting and steel comp 303 and steel comp 304 flow control device
Material Document And Classification: fed-std-66, aisi 302/sae 30302 fed std 1st material response and fed-std-66, aisi 303/sae 30303 fed std 2nd material response and fed-std-66, aisi 304/sae 30304 fed std 3rd material response flow control device
Media For Which Designed: hydraulic fluid, phosphate-ester base single response
Style Designator: straight thru
Thread Series Designator: unf 1st end
Thread Series Designator: unf 2nd end

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
1R0447	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-626-2590?

The FSCG of the NSN 4820-00-626-2590 is 4820

Does NSN 4820-00-626-2590 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 4820-00-626-2590 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-626-2590 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 4820-00-626-2590 was assigned to the Federal Catalog?

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