4820-00-856-7677

Find complete technical information, availability, and procurement data for: 4820-00-856-7677
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-856-7677

Item Name Code

27565

Assigment Date

01/01/1962 (64 years ago)

threaded internal tube first end connection type, automatic relief valve furnished items, straight thru body style, unable to decode stem material, air media for which designed

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: straight thru
Stem Material: unable to decode
Furnished Items: automatic relief valve
Media For Which Designed: air
First End Connection Type: threaded internal tube
First End Style Designator: plain
First End Outside Diameter Tube Accommodated: 0.375 inches nominal
First End Thread Size And Series/Type Designator: unable to decode
First End Thread Class: 3b
First End Thread Direction: right-hand
Second End Relationship With First End: identical
Flow Control Device: disk, circular
Flow Control Device Material: unable to decode
End Connection Quantity: 2
First End Thread Pitch Diameters: +0.5264 to 0.5308 inches
Regulation Type: automatic single stage
Valve Stem Design: single seat
Valve Loading Method: spring
Remote Actuation Method: diaphragm
Maximum Inlet Pressure Rating: 120.0 pounds per square inch
Outlet Pressure Setting: 10.0 pounds per square inch
Filter: not included
Temp Rating: -65.0 fahrenheit minimum and 180.0 fahrenheit maximum
Material: unable to decode

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
1650-00-859-3983	No Name Available	06/04/1969

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
1361-596038M3	Fluid Pressure Regulating Valve
2-43916-1	Fluid Pressure Regulating Valve

FAQs

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

What is the FSCG of the NSN 4820-00-856-7677?

The FSCG of the NSN 4820-00-856-7677 is 4820

Does the NSN 4820-00-856-7677 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809015

Does NSN 4820-00-856-7677 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 4820-00-856-7677 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-856-7677 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 4820-00-856-7677 was assigned to the Federal Catalog?

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