M5159B-4M-20

View detailed technical data, stock status, and sourcing information for: M5159B-4M-20
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-415-7321

Item Name Code

05488

Assigment Date

07/05/1995 (31 years ago)

An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end designed to accommodate a tube. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also coupling, tube and nipple, tube.

right-hand all ends thread direction, aircraft, eagle f-15 end item identification, -40.0 fahrenheit minimum operating temp, spring disk loading method, 250.0 fahrenheit single response maximum operating temp

Product Characteristics

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

Thread Direction: right-hand all ends
Disk Loading Method: spring
Maximum Operating Temp: 250.0 fahrenheit single response
Minimum Operating Temp: -40.0 fahrenheit
End Item Identification: aircraft, eagle f-15
Connection Style: plain (pipe) all ends
Valve Operation Method: automatic or manual
Connection Type: threaded external pipe all ends
Maximum Operating Pressure: 2400.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches all ends
Opening Pressure Setting: 20.0 pounds per square inch
Material: copper alloy body
Media For Which Designed: acetylene 2nd response
Media For Which Designed: air 1st response
Media For Which Designed: ammonia, gaseous 3rd response
Media For Which Designed: gas, inert 4th response
Media For Which Designed: refrigerant 12 5th response
Style Designator: angle
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
3307929-3	Safety Relief Valve
M5159B-4M-20	Safety Relief Valve
M5159B-4M-B	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-415-7321?

The FSCG of the NSN 4820-01-415-7321 is 4820

Does the NSN 4820-01-415-7321 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-415-7321 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 4820-01-415-7321 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-415-7321 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 4820-01-415-7321 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Wed, Jul 5, 1995