AT20A12 Sleeve Bearing

Comprehensive specifications and application details for: AT20A12 Sleeve Bearing.

Summary

Explore detailed summary information for bearing: AT20A12. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: AT20A12
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-01-172-5511
Item Name Code: 13205
Federal Item Identification Guide: A045A0
Assigment Date: 02/22/1984

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.

0.3650 inches minimum and 0.3750 inches maximum overall length, 1.2505 inches minimum and 1.2515 inches maximum body inside diameter, square all corners corner shape, 1.4393 inches minimum and 1.4403 inches maximum body outside diameter, qq-a-200/3,t8511 fed spec single material response or qq-a-225/6,t851 fed spec single material response outer layer material document and classification

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-01-172-5511 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter: 1.2505 inches minimum and 1.2515 inches maximum
Body Outside Diameter: 1.4393 inches minimum and 1.4403 inches maximum
Corner Shape: square all corners
Overall Length: 0.3650 inches minimum and 0.3750 inches maximum
Material Document And Classification: qq-a-200/3,t8511 fed spec single material response or qq-a-225/6,t851 fed spec single material response outer layer
Material: aluminum alloy 2024 outer layer
Material: plastic polytetrafluoroethylene inner layer
Style Designator: solid, plain, no outside flanges
Surface Finish: 125.0 microinches inside diameter surface of body
Surface Finish: 125.0 microinches left end surface of body
Surface Finish: 125.0 microinches right end surface of body
Surface Finish: 63.0 microinches outside diameter surface of body
Surface Treatment Document And Classification: mil-a-8625,ty 1 or ty 2 mil spec 1st treatment response or mil-c-5541 mil spec 2nd treatment response outer layer
Surface Treatment: anodize or chromate outer layer

Replaces

The NSN 3120-01-172-5511 is used in place of the following discontinued or alternate items:

NSN	Name	Date
3120-01-041-9740	No Name Available	06/01/2007

Frequently Asked Questions

Find quick answers to common questions about bearing: AT20A12. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-01-172-5511?: The FSCG of the NSN 3120-01-172-5511 is 3120

Does the NSN 3120-01-172-5511 have a Schedule B code assigned?: Yes, the Schedule B code is 8482997090

Does NSN 3120-01-172-5511 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 3120-01-172-5511 contain precious materials?: Item does not contain precious metal.

Does NSN 3120-01-172-5511 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.