B812-4 Sleeve Bearing

Comprehensive specifications and application details for: B812-4 Sleeve Bearing.

Summary

Explore detailed summary information for bearing: B812-4. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: B812-4
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-00-899-8830
Item Name Code: 13205
Federal Item Identification Guide: A045A0
Assigment Date: 01/01/1962

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.

30.0 rockwell c minimum and 70.0 rockwell c maximum overall hardness rating, square all corners corner shape, 0.5010 inches minimum and 0.5020 inches maximum body inside diameter, 0.4950 inches minimum and 0.5050 inches maximum overall length, 0.7520 inches minimum and 0.7530 inches maximum body outside diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-899-8830 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter: 0.5010 inches minimum and 0.5020 inches maximum
Body Outside Diameter: 0.7520 inches minimum and 0.7530 inches maximum
Corner Shape: square all corners
Hardness Rating: 30.0 rockwell c minimum and 70.0 rockwell c maximum overall
Overall Length: 0.4950 inches minimum and 0.5050 inches maximum
Material Document And Classification: mil-b-5687,ty 1,comp a or b mil spec single material response overall
Material Document And Classification: mil-l-15016, symbol 2190 mil spec single material response lubrication
Material: copper alloy overall
Material: oil lubricating lubrication
Style Designator: solid, plain, no outside flanges

Replaces

The NSN 3120-00-899-8830 is used in place of the following discontinued or alternate items:

NSN	Name	Date
3120-00-516-2089	No Name Available	08/09/1972
3120-00-528-6274	No Name Available	06/02/1969
3120-01-143-0545	No Name Available	11/01/1986

Frequently Asked Questions

Find quick answers to common questions about bearing: B812-4. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-899-8830?: The FSCG of the NSN 3120-00-899-8830 is 3120

Does the NSN 3120-00-899-8830 have a Schedule B code assigned?: Yes, the Schedule B code is 8482997090

Does NSN 3120-00-899-8830 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 3120-00-899-8830 contain precious materials?: Item does not contain precious metal.

Does NSN 3120-00-899-8830 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.