4820-00-421-6984

Find complete technical information, availability, and procurement data for: 4820-00-421-6984
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-421-6984

Item Name Code

05488

Assigment Date

12/21/1970 (55 years ago)

inside spring bonnet type, right-hand 1st end thread direction, integral bonnet attachment method, 0.250 inches 1st end nominal pipe size accommodated, ball 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 1st end
Thread Direction: right-hand 1st end
Flow Control Device: ball
Bonnet Type: inside spring
Bonnet Attachment Method: integral
Disk Loading Method: spring
Maximum Operating Temp: 250.0 fahrenheit single response
End Item Identification: grummin aerospace a10 aircraft
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Thread Quantity Per Inch: 18 1st end
Maximum Operating Pressure: 250.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches 1st end
Opening Pressure Setting: 75.0 pounds per square inch
Material: copper alloy body
Material: copper alloy seat
Material: steel corrosion resisting flow control device
Media For Which Designed: air single response
Style Designator: angle
Thread Series Designator: npt 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4310-00-479-8855	No Name Available	07/01/1983
4820-00-858-8107	No Name Available	11/01/1983
4310-00-870-5911	No Name Available	11/01/1979

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
125 1-4 75PSI	Safety Relief Valve
125200	Safety Relief Valve
125B-2-075	Safety Relief Valve
125B1-4-75PSI	Safety Relief Valve
125SS-2-075	Safety Relief Valve
8Z237	Safety Relief Valve
Z-67-75	Safety Relief Valve
Z67-70	Safety Relief Valve
Z67-75	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-421-6984?

The FSCG of the NSN 4820-00-421-6984 is 4820

Does the NSN 4820-00-421-6984 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-421-6984 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 4820-00-421-6984 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-421-6984 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 4820-00-421-6984 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Mon, Dec 21, 1970