4820-00-373-7992

Find complete technical information, availability, and procurement data for: 4820-00-373-7992
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-373-7992

Item Name Code

20520

Assigment Date

01/01/1963 (63 years ago)

An open- or close-wound coil spring, consisting of one or more helical coils wound from different shapes and types of material and finished at the ends, designed to exert pressure in a rotating direction around the coil axis. Excludes:springs designed for thermal actuation (springs in which the torsion forces are counteracted by changes in temperature) and spring,reinforcing,hose.

right-hand 1st end thread direction, 3a 1st end thread class, poppet flow control device, 0.076 inches nominal aperture diameter, spring disk loading method

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
Aperture Diameter: 0.076 inches nominal
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: flared (tube) 1st end
Connection Type: threaded external tube 1st end
Mounting Position: horizontal
Thread Quantity Per Inch: 16 1st end
Nominal Thread Size: 0.750 inches 1st end
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.500 inches 1st end
Material: aluminum alloy body
Material: rubber synthetic packing
Surface Treatment: anodize
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
1116-526692	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-373-7992?

The FSCG of the NSN 4820-00-373-7992 is 4820

Does the NSN 4820-00-373-7992 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-373-7992 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 4820-00-373-7992 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-373-7992 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 4820-00-373-7992 was assigned to the Federal Catalog?

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