NAS538B4-50

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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-235-4418

Item Name Code

13206

Assigment Date

07/01/1969 (57 years ago)

A cylindrical item in which the inner or outer ring turns upon row(s) of hardened ball, bearing which roll on a raceway, thus minimizing friction. These items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. Designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. Excludes:bearing,ball,annular.

0.5000 inches nominal overall length, 0.2812 inches minimum and 0.2822 inches maximum body inside diameter, 0.3756 inches minimum and 0.3761 inches maximum body outside diameter, 0.4900 inches minimum and 0.5100 inches maximum flange outside diameter, 0.0550 inches minimum and 0.6000 inches maximum flange width

Product Characteristics

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

Overall Length: 0.5000 inches nominal
Body Outside Diameter: 0.3756 inches minimum and 0.3761 inches maximum
Body Inside Diameter: 0.2812 inches minimum and 0.2822 inches maximum
Flange Outside Diameter: 0.4900 inches minimum and 0.5100 inches maximum
Flange Width: 0.0550 inches minimum and 0.6000 inches maximum
Right Internal Flange Hole Diameter: 0.3550 inches nominal
Right Internal Flange Width: 0.2380 inches minimum and 0.2430 inches maximum
Surface Finish: 125.0 microinches intermediate layer
Material: copper alloy 642 overall
Material Document And Classification: qq-c-465 fed spec single material response overall
Style Designator: solid, external flange one end, internal 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
10225492	Sleeve Bushing
3120002354418	Sleeve Bushing
433-1948	Sleeve Bushing
NAS538B4-050	Sleeve Bushing
NAS538B4-50	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-235-4418?

The FSCG of the NSN 3120-00-235-4418 is 3120

Does the NSN 3120-00-235-4418 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-235-4418 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 3120-00-235-4418 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-235-4418 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 3120-00-235-4418 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Tue, Jul 1, 1969