4A010858

View detailed technical data, stock status, and sourcing information for: 4A010858
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-287-4084

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

right-hand 1st end thread direction, 0.250 inches 1st end nominal pipe size accommodated, disk flow control device, threaded bonnet attachment method, inside spring bonnet type

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: disk
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Valve Discharge Flow Rate: 62.0 cubic feet per minute
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic or manual
Connection Type: threaded external pipe 1st end
Features Provided: valve stem lock shield
Maximum Operating Pressure: 225.0 pounds per square inch 1st response
Nominal Thread Size: 0.250 inches 1st end
Opening Pressure Setting: 200.0 pounds per square inch
Material: copper alloy overall
Media For Which Designed: air 1st 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Below is a list of NSNs that have been officially superseded by this NSN: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
4820-00-287-3127	No Name Available	01/01/2009
4820-00-358-1590	No Name Available	01/01/1963
4310-00-534-5416	No Name Available	05/13/1970

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
17802	Safety Relief Valve
4A010858	Safety Relief Valve
509199	Safety Relief Valve
FIG48-200-14	Safety Relief Valve
T1A4200	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-287-4084?

The FSCG of the NSN 4820-00-287-4084 is 4820

Does the NSN 4820-00-287-4084 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-287-4084 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 4820-00-287-4084 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-287-4084 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 4820-00-287-4084 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963