4B21S4-102 Sleeve Bearing

Comprehensive specifications and application details for: 4B21S4-102 Sleeve Bearing.

Summary

Explore detailed summary information for bearing: 4B21S4-102. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: 4B21S4-102
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-00-693-6721
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.

square all corners corner shape, 0.2495 inches minimum and 0.2505 inches maximum body inside diameter, 0.3730 inches minimum and 0.3735 inches maximum body outside diameter, 26.0 rockwell c minimum and 33.0 rockwell c maximum overall hardness rating, 1.0575 inches minimum and 1.0625 inches maximum overall length

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-693-6721 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter: 0.2495 inches minimum and 0.2505 inches maximum
Body Outside Diameter: 0.3730 inches minimum and 0.3735 inches maximum
Corner Shape: square all corners
Hardness Rating: 26.0 rockwell c minimum and 33.0 rockwell c maximum overall
Overall Length: 1.0575 inches minimum and 1.0625 inches maximum
Material: steel comp 4130 overall
Style Designator: solid, plain, no outside flanges
Surface Finish: 125.0 microinches left end surface of body
Surface Finish: 125.0 microinches right end surface of body
Surface Finish: 16.0 microinches outside diameter surface of body
Surface Finish: 250.0 microinches inside diameter surface of body
Surface Treatment: chromium outside diameter surface of body

Frequently Asked Questions

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What is the FSCG of the NSN 3120-00-693-6721?: The FSCG of the NSN 3120-00-693-6721 is 3120

Does the NSN 3120-00-693-6721 have a Schedule B code assigned?: Yes, the Schedule B code is 8482997090

Does NSN 3120-00-693-6721 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 3120-00-693-6721 contain precious materials?: Precious metal content is unknown

Does NSN 3120-00-693-6721 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.