668067-5

View detailed technical data, stock status, and sourcing information for: 668067-5
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-803-2548

Item Name Code

20520

Assigment Date

01/01/1962 (64 years ago)

spring disk loading method, right-hand 1st end thread direction, poppet flow control device, 3a 1st end thread class, 0.187 inches nominal aperture diameter

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
Aperture Diameter: 0.187 inches nominal
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: flareless 1st end
Connection Type: threaded external tube 1st end
Mounting Position: horizontal
Thread Quantity Per Inch: 20 1st end
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.437 inches 1st end
Seat Angle: 24.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Special Features: over-all dim.,2.781 in. lg,1.000 in. across flats
Material: aluminum alloy body
Material: rubber synthetic packing
Media For Which Designed: hydraulic fluid, phosphate-ester base single response
Surface Treatment: anodize
Style Designator: angle
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Below is a list of NSNs that have been officially superseded by this NSN: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
1650-00-610-8182	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
1R3444-15-25	Restrictor Check Valve
1R3449-15-25	Restrictor Check Valve
668067-5	Restrictor Check Valve
668374-1	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-803-2548?

The FSCG of the NSN 4820-00-803-2548 is 4820

Does the NSN 4820-00-803-2548 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-803-2548 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 4820-00-803-2548 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-803-2548 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 4820-00-803-2548 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962