4B20B12-013

View detailed technical data, stock status, and sourcing information for: 4B20B12-013
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-288-5296

Item Name Code

13206

Assigment Date

01/01/1961 (65 years ago)

A straight shaft having two or more of the following conditions: a specified surface finish designation in the range of 1 to 125 microinches (o.o25 to 3.2 micrometers), arithmetical average (aa), machined peripheral flat(s), circular groove (s), keyway(s), splines, threads, or holes. It is not designed for use in aligning by fitting into corresponding holes of another item. It may be drilled for lubricating holes. For items having an integral gear(s) or worm(s), see gearshaft (as modified). For items designed to support rotating members see axle(1), straight. For items not having the above conditions see pin, straight, headless. For items having machined ends which constitute steps see shaft(1), shouldered; axle(1), shouldered; and bolt, fluid passage.

0.8760 inches minimum and 0.8770 inches maximum body outside diameter, 0.4682 inches nominal overall length, 0.0620 inches nominal flange width, 0.7495 inches minimum and 0.7505 inches maximum body inside diameter, 0.9900 inches minimum and 1.0100 inches maximum flange outside diameter

Product Characteristics

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

Overall Length: 0.4682 inches nominal
Body Outside Diameter: 0.8760 inches minimum and 0.8770 inches maximum
Body Inside Diameter: 0.7495 inches minimum and 0.7505 inches maximum
Flange Outside Diameter: 0.9900 inches minimum and 1.0100 inches maximum
Flange Width: 0.0620 inches nominal
Corner Shape: square left flange body corner
Corner Shape: square left flange outside right corner
Corner Shape: square outside left corner
Corner Shape: square inside left corner
Corner Shape: square inside right corner
Corner Shape: square outside right corner
Material: copper alloy 642 overall
Material Document And Classification: ams 4631 assn std single material response overall
Style Designator: solid, external flange one 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
4B20B12-013	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-288-5296?

The FSCG of the NSN 3120-00-288-5296 is 3120

Does the NSN 3120-00-288-5296 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-288-5296 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 3120-00-288-5296 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-288-5296 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 3120-00-288-5296 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961