4820-01-012-6847

Find complete technical information, availability, and procurement data for: 4820-01-012-6847
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-012-6847

Item Name Code

20520

Assigment Date

11/16/1975 (50 years ago)

right-hand all ends thread direction, 3a all ends thread class, poppet flow control device, spring disk loading method, 0.139 inches nominal aperture diameter

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 all ends
Thread Direction: right-hand all ends
Aperture Diameter: 0.139 inches nominal
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: gasket seal (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 20 all ends
Nominal Thread Size: 0.718 inches all ends
Criticality Code Justification: feat
Special Features: weapon system essential
Material: steel corrosion resisting overall
Surface Treatment: passivate
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response
Style Designator: straight thru
Thread Series Designator: uns all ends

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
5590-139	Restrictor Check Valve
68B690101-139	Restrictor Check Valve
7M845-3	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-012-6847?

The FSCG of the NSN 4820-01-012-6847 is 4820

Does the NSN 4820-01-012-6847 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-012-6847 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 4820-01-012-6847 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-012-6847 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 4820-01-012-6847 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Sun, Nov 16, 1975