4820-00-281-3544

Find complete technical information, availability, and procurement data for: 4820-00-281-3544
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-281-3544

Item Name Code

05487

Assigment Date

08/26/1973 (52 years ago)

poppet flow control device, external seat for gasket seal (boss) all ends connection style, 3a all ends thread class, 275.0 fahrenheit single response maximum operating temp, right-hand all ends 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 all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Maximum Operating Temp: 275.0 fahrenheit single response
Connection Style: external seat for gasket seal (boss) all ends
Valve Operation Method: automatic
Connection Type: threaded external boss all ends
Mounting Position: horizontal
Thread Quantity Per Inch: 14 all ends
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 1.578 inches 1st end
Nominal Thread Size: 1.250 inches 2nd end
Special Features: the end connection identified above as the second end is the valve inlet
Material: steel comp 630 overall
Material Document And Classification: ams 5643 assn std single material response overall
Media For Which Designed: hydraulic fluid, mineral base single response
Surface Treatment: passivate
Surface Treatment Document And Classification: mil-s-5002 mil spec single treatment response
Style Designator: straight thru
Thread Series Designator: unjs 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
4C2616-3	Check Valve
ST7M262-16	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-281-3544?

The FSCG of the NSN 4820-00-281-3544 is 4820

Does the NSN 4820-00-281-3544 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-281-3544 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-00-281-3544 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-281-3544 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 4820-00-281-3544 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Sun, Aug 26, 1973