4722-3-6A5-2

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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-121-2553

Item Name Code

13206

Assigment Date

10/23/1968 (57 years ago)

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.

2.9990 inches minimum and 3.0010 inches maximum body inside diameter, 3.7400 inches minimum and 3.7510 inches maximum body outside diameter, chamfered inside left corner corner shape, 2.9950 inches minimum and 3.0050 inches maximum overall length, 0.4375 inches nominal first hole diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Hole Diameter: 0.4375 inches nominal first
Overall Length: 2.9950 inches minimum and 3.0050 inches maximum
Body Outside Diameter: 3.7400 inches minimum and 3.7510 inches maximum
Body Inside Diameter: 2.9990 inches minimum and 3.0010 inches maximum
Corner Shape: chamfered inside left corner
Corner Shape: square outside left corner
Corner Shape: square inside right corner
Corner Shape: square outside right corner
Antirotation/Lubrication Type And Quantity: 1 hole
Special Features: hole thd 1/2-13 unc
Material: copper alloy 932 overall
Material Document And Classification: sae assn std single material response overall
Style Designator: solid, plain, no outside flanges

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
4722-3-6A5-2	Sleeve Bushing

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 3120-00-121-2553?

The FSCG of the NSN 3120-00-121-2553 is 3120

Does the NSN 3120-00-121-2553 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-121-2553 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 3120-00-121-2553 contain precious materials?

Precious metal content is unknown

Does NSN 3120-00-121-2553 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 3120-00-121-2553 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Wed, Oct 23, 1968