4820-00-405-4895

Find complete technical information, availability, and procurement data for: 4820-00-405-4895
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-405-4895

Item Name Code

05487

Assigment Date

04/14/1971 (55 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.

3a 2nd end thread class, poppet flow control device, right-hand 2nd end thread direction, right-hand 1st end thread direction, 3b 1st end thread class

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 2nd end
Thread Class: 3b 1st end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: gasket seal (boss) 1st end
Valve Operation Method: automatic
Connection Type: threaded external boss 2nd end
Connection Type: threaded internal boss 1st end
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 12 1st end
Thread Quantity Per Inch: 12 2nd end
Nominal Thread Size: 1.625 inches 1st end
Nominal Thread Size: 1.625 inches 2nd end
Surface Treatment: passivate
Style Designator: straight thru
Thread Series Designator: unj 1st end
Thread Series Designator: unj 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
12-2667-3	Check Valve
2601759-3	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-405-4895?

The FSCG of the NSN 4820-00-405-4895 is 4820

Does NSN 4820-00-405-4895 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 4820-00-405-4895 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-405-4895 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 4820-00-405-4895 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Wed, Apr 14, 1971