668276-11

View detailed technical data, stock status, and sourcing information for: 668276-11
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-858-0502

Item Name Code

05488

Assigment Date

01/01/1962 (64 years ago)

3a 2nd end thread class, right-hand 1st end thread direction, right-hand 2nd end thread direction, poppet flow control device, 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 Class: 3a 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 65.0 fahrenheit single response
Connection Style: flareless (tube) 2nd end
Connection Type: threaded external tube 2nd end
Connection Type: threaded external tube 1st end
Thread Quantity Per Inch: 12 3rd end
Maximum Operating Pressure: 16.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches 2nd end
Nominal Thread Size: 0.750 inches 1st end
Seat Angle: 24.0 degrees 1st end
Seat Angle: 24.0 degrees 2nd end
Opening Pressure Setting: 12.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.500 inches 1st end
Nominal Outside Diameter Tube Accommodated: 0.500 inches 2nd end
Special Features: filter guard in stainless steel
Style Designator: cross
Thread Series Designator: un 3rd 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
219815	Safety Relief Valve
668276-11	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-858-0502?

The FSCG of the NSN 4820-00-858-0502 is 4820

Does the NSN 4820-00-858-0502 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-858-0502 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 4820-00-858-0502 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-858-0502 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 4820-00-858-0502 was assigned to the Federal Catalog?

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