20057B Sleeve Bearing

Comprehensive specifications and application details for: 20057B Sleeve Bearing.

Summary

Explore detailed summary information for bearing: 20057B. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: 20057B
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-00-358-2258
Item Name Code: 13205
Federal Item Identification Guide: A045A0
Assigment Date: 01/01/1963

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.

1 hole antirotation/lubrication type and quantity, 2.1885 inches minimum and 2.1895 inches maximum body outside diameter, chamfered outside right corner corner shape, 1.4990 inches minimum and 1.5000 inches maximum body inside diameter, square left flange body corner corner shape

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-358-2258 . Find dimensions, materials, tolerances, performance characteristics, etc.

Antirotation/Lubrication Type And Quantity: 1 hole
Body Inside Diameter: 1.4990 inches minimum and 1.5000 inches maximum
Body Outside Diameter: 2.1885 inches minimum and 2.1895 inches maximum
Corner Shape: chamfered outside right corner
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
Flange Outside Diameter: 2.9950 inches minimum and 3.0050 inches maximum
Flange Width: 0.33875 inches minimum and 0.34875 inches maximum
Lubricant Accommodation Style: grooved circular
Overall Length: 3.15125 inches minimum and 3.16125 inches maximum
Material: steel outer layer
Material: tin alloy uns l13870 inner layer
Special Features: flange face has 0.2500 in radius groove across diameter
Style Designator: solid, external flange one end
Surface Groove Location And Quantity: 1 external

Replaces

The NSN 3120-00-358-2258 is used in place of the following discontinued or alternate items:

NSN	Name	Date
3120-00-147-8228	No Name Available	01/01/1963

Frequently Asked Questions

Find quick answers to common questions about bearing: 20057B. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-358-2258?: The FSCG of the NSN 3120-00-358-2258 is 3120

Does the NSN 3120-00-358-2258 have a Schedule B code assigned?: Yes, the Schedule B code is 8482997090

Does NSN 3120-00-358-2258 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 3120-00-358-2258 contain precious materials?: Precious metal content is unknown

Does NSN 3120-00-358-2258 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.