4820-00-877-8802

Find complete technical information, availability, and procurement data for: 4820-00-877-8802
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 NSN 4820-00-877-8802 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

4820-00-877-8802

Item Name Code

20520

Assigment Date

08/25/1967 (58 years ago)

An open- or close-wound coil spring, consisting of one or more helical coils wound from different shapes and types of material and finished at the ends, designed to exert pressure in a rotating direction around the coil axis. Excludes:springs designed for thermal actuation (springs in which the torsion forces are counteracted by changes in temperature) and spring,reinforcing,hose.

poppet flow control device, 3a all ends thread class, spring disk loading method, right-hand all ends thread direction, 275.0 fahrenheit single response maximum operating temp

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
Disk Loading Method: spring
Maximum Operating Temp: 275.0 fahrenheit single response
Connection Style: flareless all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.437 inches all ends
Seat Angle: 12.0 degrees all ends
Material: aluminum alloy body
Material: rubber synthetic flow control device
Media For Which Designed: fuel/oil, hydrocarbon single response
Surface Treatment: enamel
Style Designator: straight thru
Thread Series Designator: unf 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
1R0448-2	Restrictor Check Valve
215-32320-2	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-877-8802?

The FSCG of the NSN 4820-00-877-8802 is 4820

Does the NSN 4820-00-877-8802 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-877-8802 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 4820-00-877-8802 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-877-8802 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 4820-00-877-8802 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Fri, Aug 25, 1967