4820-00-957-7775

Find complete technical information, availability, and procurement data for: 4820-00-957-7775
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-957-7775

Item Name Code

05487

Assigment Date

01/01/1962 (64 years ago)

A resilient metal item, circular or nearly circular, which is designed to be inserted into an internal or external groove and retained by its own spring action, or it may have external prongs or projections designed to be inserted into a hole and retained by spring action of the prongs which grip by imbedding into the material. For items having internal prongs which perform the same function, see push on nut. It is used to keep and/or lock a part(s) in position, as a ball bearing on a shaft or in a housing. See also clip, retaining and pin, lock. Excludes:ring, connecting, round.

right-hand all ends thread direction, spring disk loading method, 200.0 fahrenheit 2nd response maximum operating temp, 0.250 inches all ends nominal pipe size accommodated, poppet flow control device

Product Characteristics

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

Nominal Pipe Size Accommodated: 0.250 inches all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 200.0 fahrenheit 2nd response
Maximum Operating Temp: 200.0 fahrenheit 1st response
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 18 all ends
Maximum Operating Pressure: 3000.0 pounds per square inch 1st response
Maximum Operating Pressure: 3000.0 pounds per square inch 2nd response
Nominal Thread Size: 0.250 inches 1st end
Material: aluminum alloy seat
Material: aluminum alloy body
Material: steel corrosion resisting and rubber butadiene-acrylonitrile class nbr flow control device
Media For Which Designed: fuel/oil, hydrocarbon 1st response
Media For Which Designed: water-oil-gas 2nd response
Surface Treatment: anodize
Style Designator: straight thru
Thread Series Designator: npt 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
2318979	Check Valve
483-1-4D	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-957-7775?

The FSCG of the NSN 4820-00-957-7775 is 4820

Does the NSN 4820-00-957-7775 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-957-7775 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 4820-00-957-7775 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-957-7775 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 4820-00-957-7775 was assigned to the Federal Catalog?

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