W4420 3-8D

View detailed technical data, stock status, and sourcing information for: W4420 3-8D
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part W4420 3-8D to receive an up to date pricing and availability quote by email.

Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-540-3427

Item Name Code

05488

Assigment Date

01/01/1960 (66 years ago)

disk flow control device, spring disk loading method, right-hand 1st end thread direction, 0.375 inches 1st end nominal pipe size accommodated, 18 1st end thread quantity per inch

Product Characteristics

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

Nominal Pipe Size Accommodated: 0.375 inches 1st end
Thread Direction: right-hand 1st end
Flow Control Device: disk
Disk Loading Method: spring
Thread Quantity Per Inch: 18 1st end
Nominal Thread Size: 0.562 inches 1st end
Opening Pressure Setting: 50.0 pounds per square inch
Material: aluminum alloy seat
Material: aluminum alloy body
Material: aluminum alloy flow control device
Thread Series Designator: unf 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-595-3383	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
2533184-503	Safety Relief Valve
W4413 3-8E	Safety Relief Valve
W4420 3-8D	Safety Relief Valve
W44203-8D	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-540-3427?

The FSCG of the NSN 4820-00-540-3427 is 4820

Does the NSN 4820-00-540-3427 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-540-3427 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 4820-00-540-3427 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-540-3427 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 4820-00-540-3427 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960