4820-00-554-9039

Find complete technical information, availability, and procurement data for: 4820-00-554-9039
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-554-9039

Item Name Code

20520

Assigment Date

01/01/1963 (63 years ago)

poppet flow control device, 0.041 inches nominal aperture diameter, 3b 1st end thread class, spring disk loading method, right-hand 1st 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: 3b 1st end
Thread Direction: right-hand 1st end
Aperture Diameter: 0.041 inches nominal
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: plain, optional end (pipe) 1st end
Connection Type: threaded internal tube 1st end
Mounting Position: horizontal
Thread Quantity Per Inch: 18 1st end
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.562 inches 1st end
Nominal Outside Diameter Tube Accommodated: 0.375 inches 1st end
Special Features: over-all dim.,3.000 in. lg,0.812 in. across flats
Material: aluminum alloy body
Material: rubber synthetic packing
Material: steel flow control device
Media For Which Designed: hydraulic fluid, phosphate-ester base single response
Style Designator: straight thru
Thread Series Designator: unf 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
1650-00-529-4831	No Name Available	01/01/1960

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
1116-548195	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-554-9039?

The FSCG of the NSN 4820-00-554-9039 is 4820

Does the NSN 4820-00-554-9039 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-554-9039 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 4820-00-554-9039 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-554-9039 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 4820-00-554-9039 was assigned to the Federal Catalog?

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