A491 Sleeve Bearing

Comprehensive specifications and application details for: A491 Sleeve Bearing.

Summary

Explore detailed summary information for bearing: A491. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: A491
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-00-661-5849
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.

mil-b-5687,ty 1,comp b mil spec single material response overall material document and classification, 0.3130 inches minimum and 0.3140 inches maximum body inside diameter, 0.4390 inches minimum and 0.4400 inches maximum body outside diameter, square all corners corner shape, 0.2400 inches minimum and 0.2500 inches maximum overall length

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-661-5849 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter: 0.3130 inches minimum and 0.3140 inches maximum
Body Outside Diameter: 0.4390 inches minimum and 0.4400 inches maximum
Corner Shape: square all corners
Overall Length: 0.2400 inches minimum and 0.2500 inches maximum
Material Document And Classification: mil-b-5687,ty 1,comp b mil spec single material response overall
Material: copper alloy overall
Material: oil lubricating lubrication
Nondefinitive Spec/Std Data: 1 type and b composition
Style Designator: solid, plain, no outside flanges

Replaces

The NSN 3120-00-661-5849 is used in place of the following discontinued or alternate items:

NSN	Name	Date
3120-00-661-3846	No Name Available	09/01/1976

Frequently Asked Questions

Find quick answers to common questions about bearing: A491. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-661-5849?: The FSCG of the NSN 3120-00-661-5849 is 3120

Does the NSN 3120-00-661-5849 have a Schedule B code assigned?: Yes, the Schedule B code is 8482997090

Does NSN 3120-00-661-5849 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 3120-00-661-5849 contain precious materials?: Precious metal content is unknown

Does NSN 3120-00-661-5849 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.