4820-00-203-9389

Find complete technical information, availability, and procurement data for: 4820-00-203-9389
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-203-9389

Item Name Code

16989

Assigment Date

01/01/1963 (63 years ago)

"an item designed to drain fluids from fuel systems, tanks, filters, or similar items. It has a mounting end, a free flowing end, and a quick-acting nonmetallic sealed closure, usually spring loaded, that holds it in an "off" position. It requires no lubrication other than from the fluid being drained."

manual valve operation method, flared (tube) 1st end connection style, poppet flow control device, right-hand 1st end thread direction, 3a 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 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Connection Style: flared (tube) 1st end
Valve Operation Method: manual
Connection Type: threaded external tube 1st end
Thread Quantity Per Inch: 20 1st end
Nominal Thread Size: 0.437 inches 1st end
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Material: aluminum alloy body
Surface Treatment: anodize
Style Designator: straight thru
Thread Series Designator: unf 1st 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
633971-5	Poppet Drain Cock
740B5	Poppet Drain Cock

FAQs

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

What is the FSCG of the NSN 4820-00-203-9389?

The FSCG of the NSN 4820-00-203-9389 is 4820

Does the NSN 4820-00-203-9389 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-203-9389 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 4820-00-203-9389 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-203-9389 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 4820-00-203-9389 was assigned to the Federal Catalog?

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