AA521-9

View detailed technical data, stock status, and sourcing information for: AA521-9
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-489-4145

Item Name Code

13205

Assigment Date

01/01/1963 (63 years ago)

copper alloy overall material, square all corners corner shape, 0.3740 inches minimum and 0.3750 inches maximum body inside diameter, 0.5020 inches minimum and 0.5030 inches maximum body outside diameter, 0.3700 inches minimum and 0.3800 inches maximum overall length

Product Characteristics

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

Overall Length: 0.3700 inches minimum and 0.3800 inches maximum
Body Outside Diameter: 0.5020 inches minimum and 0.5030 inches maximum
Body Inside Diameter: 0.3740 inches minimum and 0.3750 inches maximum
Corner Shape: square all corners
Material: copper alloy overall
Material: oil lubricating lubrication
Material Document And Classification: mil-b-5697,ty 1,comp a mil spec single material response overall
Style Designator: solid, plain, no outside flanges

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3120-00-287-9071	No Name Available	01/01/1961

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
A521-9	Sleeve Bearing
AA521-9	Sleeve Bearing
AGB-A1-17	Sleeve Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-489-4145?

The FSCG of the NSN 3120-00-489-4145 is 3120

Does the NSN 3120-00-489-4145 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997090

Does NSN 3120-00-489-4145 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 3120-00-489-4145 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-489-4145 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 3120-00-489-4145 was assigned to the Federal Catalog?

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