4820-01-021-1558

Find complete technical information, availability, and procurement data for: 4820-01-021-1558
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-021-1558

Item Name Code

05487

Assigment Date

05/10/1976 (50 years ago)

A switch which is actuated by changes in pressure of any gas or liquid or by changes in a vacuum acting upon its sensing element. Excludes:baroswitch; switch,pressure-thermostatic; and switch,sensitive.

2b 2nd end thread class, ball flow control device, 3a 1st end thread class, right-hand 2nd end thread direction, right-hand 1st end thread direction

Product Characteristics

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

Thread Class: 2b 2nd end
Thread Class: 3a 1st end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: ball
Disk Loading Method: spring
End Item Identification: grumman a-10 aircraft
Connection Style: external seat for gasket seal (boss) 2nd end
Connection Style: flared (tube) 1st end
Valve Operation Method: automatic
Connection Type: threaded external boss 2nd end
Connection Type: threaded external tube 1st end
Mounting Position: horizontal or vertical
Nominal Thread Size: 0.750 inches 2nd end
Nominal Thread Size: 0.750 inches 1st end
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.500 inches 1st end
Nominal Outside Diameter Tube Accommodated: 0.500 inches 2nd end
Material: steel overall
Style Designator: angle
Thread Series Designator: unf 2nd end
Thread Series Designator: unjf 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
S15-01174	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-021-1558?

The FSCG of the NSN 4820-01-021-1558 is 4820

Does the NSN 4820-01-021-1558 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-021-1558 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 4820-01-021-1558 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-021-1558 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 4820-01-021-1558 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Mon, May 10, 1976