557-3A

View detailed technical data, stock status, and sourcing information for: 557-3A
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-486-1879

Item Name Code

05487

Assigment Date

01/01/1963 (63 years ago)

disk flow control device, aluminum alloy body material, spring disk loading method, unthreaded external hose 1st end connection type, horizontal mounting position

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Flow Control Device: disk
Disk Loading Method: spring
Connection Type: unthreaded external hose 1st end
Mounting Position: horizontal
Material: aluminum alloy body

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
1650-00-486-1878	No Name Available	01/01/1960

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
557-3A	Check Valve
557-3C	Check Valve
557-3D	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-486-1879?

The FSCG of the NSN 4820-00-486-1879 is 4820

Does the NSN 4820-00-486-1879 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-486-1879 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 4820-00-486-1879 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-486-1879 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 4820-00-486-1879 was assigned to the Federal Catalog?

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