50691-57

View detailed technical data, stock status, and sourcing information for: 50691-57
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-618-6443

Item Name Code

13206

Assigment Date

01/01/1963 (63 years ago)

A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. It must have a visible or detectable means of lubrication or be self-lubricated. The over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. Includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. See also bushing, sleeve; spacer, sleeve; and washer (as modified). Excludes:pin, hollow.

0.5585 inches minimum and 0.5675 inches maximum right flange outside diameter, 0.5585 inches minimum and 0.5675 inches maximum left flange outside diameter, 0.4960 inches minimum and 0.5050 inches maximum body outside diameter, 0.3080 inches minimum and 0.3160 inches maximum body inside diameter, 0.3125 inches nominal 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: 0.3125 inches nominal
Body Outside Diameter: 0.4960 inches minimum and 0.5050 inches maximum
Body Inside Diameter: 0.3080 inches minimum and 0.3160 inches maximum
Left Flange Outside Diameter: 0.5585 inches minimum and 0.5675 inches maximum
Right Flange Outside Diameter: 0.5585 inches minimum and 0.5675 inches maximum
Left Flange Width: 0.0625 inches nominal
Right Flange Width: 0.0625 inches nominal
Corner Shape: square all corners
Surface Finish: 63.0 microinches intermediate layer
Material: steel comp 303 overall
Material Document And Classification: qq-s-763 fed spec single material response overall
Style Designator: solid, external flanges both ends

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
1889-57	Sleeve Bushing
50691-57	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-618-6443?

The FSCG of the NSN 3120-00-618-6443 is 3120

Does the NSN 3120-00-618-6443 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-618-6443 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 3120-00-618-6443 contain precious materials?

Precious metal content is unknown

Does NSN 3120-00-618-6443 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 3120-00-618-6443 was assigned to the Federal Catalog?

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