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4820-00-450-6539

Find complete technical information, availability, and procurement data for: 4820-00-450-6539

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4820-00-450-6539
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-450-6539
Item Name Code
05488
Assigment Date
02/23/1972 (54 years ago)

spring disk loading method, right-hand 1st end thread direction, 3a 1st end thread class, flared (tube) 1st end connection style, 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.

Thread Class
3a 1st end
Thread Direction
right-hand 1st end
Flow Control Device
poppet
Disk Loading Method
spring
Connection Style
flared (tube) 1st end
Valve Operation Method
automatic
Connection Type
threaded external tube 1st end
Thread Quantity Per Inch
20 1st end
Nominal Thread Size
0.437 inches 1st end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
1425.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
aluminum alloy seat
Material
aluminum alloy body
Surface Treatment
anodize
Surface Treatment Document And Classification
mil-a-8625 mil spec single treatment response
Style Designator
angle
Thread Series Designator
unf 1st end

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
166L068-3 Safety Relief Valve
4644-1 Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-450-6539?
The FSCG of the NSN 4820-00-450-6539 is 4820
Does the NSN 4820-00-450-6539 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-450-6539 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 4820-00-450-6539 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-00-450-6539 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 4820-00-450-6539 was assigned to the Federal Catalog?
It was assigned 54 years ago, on Wed, Feb 23, 1972

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