4820-00-999-8331

Find complete technical information, availability, and procurement data for: 4820-00-999-8331
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-999-8331

Item Name Code

05488

Assigment Date

03/25/1966 (60 years ago)

A resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self-supporting. The item must have inherent characteristics of inducing self-inductance. Opposition to current flow is an inherent property of the resistance wire and is manifested by the heat dissipation in the resistor. Exclut s suppressor, ignition interference. See also resistor (1), fixed, wire wound, noninductive.

poppet flow control device, right-hand 2nd end thread direction, 3b 2nd end thread class, 3a 1st end thread class, 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: 3a 1st end
Thread Class: 3b 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Bonnet Type: packing retaining
Disk Loading Method: spring
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: gasket seal(boss) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external tube 1st end
Connection Type: threaded internal boss 2nd end
Features Provided: pressure tight outlet side
Maximum Operating Pressure: 200.0 pounds per square inch single response
Nominal Thread Size: 0.562 inches 1st end
Nominal Thread Size: 0.562 inches 2nd end
Seat Angle: 37.0 degrees 1st end
Opening Pressure Setting: 80.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.375 inches 1st end
Nominal Outside Diameter Tube Accommodated: 0.562 inches 2nd end
Material: aluminum alloy seat
Material: aluminum alloy body
Media For Which Designed: acetylene single response
Style Designator: straight thru
Thread Series Designator: unf 1st end
Thread Series Designator: unjf 2nd 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
559A6TB80	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-999-8331?

The FSCG of the NSN 4820-00-999-8331 is 4820

Does the NSN 4820-00-999-8331 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-999-8331 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 4820-00-999-8331 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-999-8331 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 4820-00-999-8331 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, Mar 25, 1966