4820-00-529-3990

Find complete technical information, availability, and procurement data for: 4820-00-529-3990
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-529-3990

Item Name Code

05487

Assigment Date

01/01/1963 (63 years ago)

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

spring disk loading method, right-hand 1st end thread direction, pressed-in renewable seat ring type, 3a 1st end thread class, poppet flow control device

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 Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Renewable Seat Ring Type: pressed-in
Connection Style: flared (tube) 1st end
Connection Type: threaded external tube 1st end
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 20 1st end
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches 1st end
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Media For Which Designed: air single response
Style Designator: straight thru
Thread Series Designator: unf 1st 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
658053-1	Check Valve
8R7642	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-529-3990?

The FSCG of the NSN 4820-00-529-3990 is 4820

Does the NSN 4820-00-529-3990 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-00-529-3990 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 4820-00-529-3990 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-529-3990 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 4820-00-529-3990 was assigned to the Federal Catalog?

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