4820-01-417-8495

Find complete technical information, availability, and procurement data for: 4820-01-417-8495
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 4820-01-417-8495 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

4820-01-417-8495

Item Name Code

20520

Assigment Date

08/16/1995 (30 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

flared (tube) all ends connection style, right-hand all ends thread direction, 3a all ends thread class, aircraft, hornet f/a 18 end item identification, automatic valve operation method

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
End Item Identification: aircraft, hornet f/a 18
Connection Style: flared (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal or vertical
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 37.0 degrees all ends
Material: aluminum alloy 2024 body
Surface Treatment: anodize
Surface Treatment Document And Classification: mil-a-8625, type ii, class 2 mil spec single treatment response
Style Designator: straight thru
Thread Series Designator: unjf 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
7M583-2	Restrictor Check Valve
CV99-68-2	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-417-8495?

The FSCG of the NSN 4820-01-417-8495 is 4820

Does the NSN 4820-01-417-8495 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-417-8495 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 4820-01-417-8495 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-417-8495 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 4820-01-417-8495 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Wed, Aug 16, 1995