6854255

View detailed technical data, stock status, and sourcing information for: 6854255
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-131-6400

Item Name Code

05487

Assigment Date

12/11/1968 (57 years ago)

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

3a 2nd end thread class, right-hand 1st end thread direction, 3a 1st end thread class, ball flow control device, right-hand 2nd end thread direction

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: ball
Connection Style: external seat for gasket seal (boss) 2nd end
Connection Style: flared (tube) 1st end
Connection Type: threaded external boss 2nd end
Connection Type: threaded external tube 1st end
Thread Quantity Per Inch: 20 1st end
Thread Quantity Per Inch: 24 2nd end
Maximum Operating Pressure: 8.0 pounds per square inch single response
Nominal Thread Size: 0.375 inches 2nd 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
Media For Which Designed: fuel/oil, hydrocarbon single response
Style Designator: straight thru
Thread Series Designator: unf 1st end
Thread Series Designator: unf 2nd 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
6854255	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-131-6400?

The FSCG of the NSN 4820-00-131-6400 is 4820

Does the NSN 4820-00-131-6400 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301010

Does NSN 4820-00-131-6400 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-00-131-6400 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-131-6400 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 4820-00-131-6400 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Wed, Dec 11, 1968