4820-00-715-4576

Find complete technical information, availability, and procurement data for: 4820-00-715-4576
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-715-4576

Item Name Code

20520

Assigment Date

01/01/1961 (65 years ago)

3a 1st end thread class, right-hand 1st end thread direction, 0.025 inches minimum and 0.052 inches maximum aperture diameter, 3a 2nd end thread class, right-hand 2nd end thread direction

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: 0.025 inches minimum and 0.052 inches maximum
Flow Control Device: poppet
Disk Loading Method: spring
Renewable Seat Ring Type: threaded
Connection Style: flared (tube) 1st end
Connection Style: flared (tube) 2nd end
Connection Type: threaded external tube 2nd end
Connection Type: threaded external tube 1st end
Mounting Facility: bracket
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 16 1st end
Thread Quantity Per Inch: 18 2nd end
Maximum Operating Pressure: 35.0 pounds per square inch single response
Nominal Thread Size: 0.562 inches 2nd end
Nominal Thread Size: 0.750 inches 1st end
Seat Angle: 37.0 degrees 1st end
Seat Angle: 37.0 degrees 2nd end
Face To Face Distance: 1.960 inches
Nominal Outside Diameter Tube Accommodated: 0.375 inches 2nd end
Nominal Outside Diameter Tube Accommodated: 0.500 inches 1st end
Special Features: valve operation method: hydraulic
Material: aluminum alloy 2024 body
Material: steel comp 303 flow control device
Material Document And Classification: 66 fed std single material response flow control device
Material Document And Classification: qq-a-225/6 fed spec single material response body
Media For Which Designed: oil, hydraulic single response
Style Designator: straight thru
Thread Series Designator: unf 1st end
Thread Series Designator: unf 2nd end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2995-00-820-7791	No Name Available	01/01/1963
2995-00-898-3060	No Name Available	01/01/1961

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
1112-599355	Restrictor Check Valve
K-1221-8-2	Restrictor Check Valve
LH10420	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-715-4576?

The FSCG of the NSN 4820-00-715-4576 is 4820

Does the NSN 4820-00-715-4576 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-715-4576 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 4820-00-715-4576 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-715-4576 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 4820-00-715-4576 was assigned to the Federal Catalog?

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