4B21B5-022

Comprehensive specifications and application details for: 4B21B5-022 Sleeve Bushing.

Summary

Explore detailed summary information for bearing: 4B21B5-022. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number
4B21B5-022
Federal Supply Classification
3120 Unmounted Plain Bearings
(NSN) National Stock Number
3120-00-817-8268
Item Name Code
13206
Federal Item Identification Guide
A045A0
Assigment Date
01/01/1962

A tubular shaped unthreaded item with or without a flange at one end designed to be inserted into a hole to reduce the inside diameter of the hole and to protect the surrounding body structure from damage resulting from stress, strain, and/or vibration. The overall length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body. Includes items which are divided into two or more segments which includes 180 degrees (3.141 radians) or less of the bearing periphery. For items made of rubber, see bushing, nonmetallic. See also bearing, sleeve; bushing, tapered; spacer, sleeve; insulator, bushing; and bushing, electrical conductor. Excludes:bushing, drill, jig.

0.3120 inches minimum and 0.3130 inches maximum body inside diameter, square all corners corner shape, 26.0 rockwell c minimum and 33.0 rockwell c maximum overall hardness rating, 0.4354 inches minimum and 0.4360 inches maximum body outside diameter, 0.6825 inches minimum and 0.6875 inches maximum overall length

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-817-8268 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter
0.3120 inches minimum and 0.3130 inches maximum
Body Outside Diameter
0.4354 inches minimum and 0.4360 inches maximum
Corner Shape
square all corners
Hardness Rating
26.0 rockwell c minimum and 33.0 rockwell c maximum overall
Overall Length
0.6825 inches minimum and 0.6875 inches maximum
Material
copper alloy 642 overall
Style Designator
solid, plain, no outside flanges
Surface Finish
125.0 microinches outside 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
250.0 microinches inside diameter surface of body

Frequently Asked Questions

Find quick answers to common questions about bearing: 4B21B5-022. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-817-8268?
The FSCG of the NSN 3120-00-817-8268 is 3120
Does the NSN 3120-00-817-8268 have a Schedule B code assigned?
Yes, the Schedule B code is 8482997060
Does NSN 3120-00-817-8268 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 3120-00-817-8268 contain precious materials?
Precious metal content is unknown
Does NSN 3120-00-817-8268 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.
When the NSN 3120-00-817-8268 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Mon, Jan 1, 1962

Price & Availability

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Sleeve Bushing