4B20B7-007 Sleeve Bushing

Comprehensive specifications and application details for: 4B20B7-007 Sleeve Bushing.

Summary

Explore detailed summary information for bearing: 4B20B7-007. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: 4B20B7-007
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-00-689-7257
Item Name Code: 13206
Federal Item Identification Guide: A045A0
Assigment Date: 02/07/1968

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.

square outside left corner corner shape, square left flange outside right corner corner shape, 0.5635 inches minimum and 0.5645 inches maximum body outside diameter, square left flange body corner corner shape, 0.4370 inches minimum and 0.4380 inches maximum body inside diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-689-7257 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter: 0.4370 inches minimum and 0.4380 inches maximum
Body Outside Diameter: 0.5635 inches minimum and 0.5645 inches maximum
Corner Shape: square left flange body corner
Corner Shape: square left flange outside right corner
Corner Shape: square outside left corner
Corner Shape: square inside left corner
Corner Shape: square inside right corner
Corner Shape: square outside right corner
Flange Outside Diameter: 0.6780 inches minimum and 0.6980 inches maximum
Flange Width: 0.0570 inches minimum and 0.0620 inches maximum
Overall Length: 0.2707 inches minimum and 0.2857 inches maximum
Material: copper alloy 642 overall
Style Designator: solid, external flange one end
Surface Finish: 125.0 microinches inside diameter surface of body
Surface Finish: 125.0 microinches outside diameter surface of body
Surface Finish: 125.0 microinches left end surface of body and flange
Surface Finish: 125.0 microinches right end surface of body
Surface Finish: 125.0 microinches right end surface of left flange
Surface Finish: 250.0 microinches outside diameter surface of flange
Surface Treatment: cadmium left end surface of body and flange
Surface Treatment: cadmium outside diameter surface of body
Surface Treatment: cadmium outside diameter surface of flange
Surface Treatment: cadmium right end surface of body
Surface Treatment: cadmium right end surface of left flange

Replaces

The NSN 3120-00-689-7257 is used in place of the following discontinued or alternate items:

NSN	Name	Date
3120-01-314-4826	No Name Available	11/01/1992

Frequently Asked Questions

Find quick answers to common questions about bearing: 4B20B7-007. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-689-7257?: The FSCG of the NSN 3120-00-689-7257 is 3120

Does the NSN 3120-00-689-7257 have a Schedule B code assigned?: Yes, the Schedule B code is 8482997060

Does NSN 3120-00-689-7257 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 3120-00-689-7257 contain precious materials?: Item does not contain precious metal.

Does NSN 3120-00-689-7257 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.