MS28890-4

View detailed technical data, stock status, and sourcing information for: MS28890-4
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-989-7632

Item Name Code

05487

Assigment Date

01/01/1962 (64 years ago)

An assembly consisting of wire rope, with terminal attachment(s) and/or end loop(s), in a continuous run from end to end. (if without attachments, one end must terminate in a loop.) it may contain one or more intermediate and/or end attachments such as sliding or fixed ring(s), hook(s), or the like. For items specifically designed for aviation, see wire rope assembly, single leg, aviation. Excludes:control assembly, push-pull.

poppet flow control device, 3a all ends thread class, spring disk loading method, right-hand all ends thread direction, flareless all ends connection style

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 all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: flareless all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 12.0 degrees all ends
Material: aluminum alloy overall
Media For Which Designed: hydraulic fluid, mineral base single response
Style Designator: straight thru
Thread Series Designator: unf all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-700-0552	No Name Available	08/01/1978
4820-00-777-1344	No Name Available	08/01/1978

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
MS28890-4	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-989-7632?

The FSCG of the NSN 4820-00-989-7632 is 4820

Does the NSN 4820-00-989-7632 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-989-7632 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-00-989-7632 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-989-7632 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 4820-00-989-7632 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962