70400-08107-120

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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-221-4246

Item Name Code

13206

Assigment Date

11/28/1985 (40 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.

1.1885 inches minimum and 1.1895 inches maximum body outside diameter, 1.5600 inches nominal flange outside diameter, 0.9700 inches minimum and 0.9800 inches maximum body inside diameter, 0.8175 inches nominal overall length, 0.0650 inches minimum and 0.0700 inches maximum flange width

Product Characteristics

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

Overall Length: 0.8175 inches nominal
Body Outside Diameter: 1.1885 inches minimum and 1.1895 inches maximum
Body Inside Diameter: 0.9700 inches minimum and 0.9800 inches maximum
Flange Outside Diameter: 1.5600 inches nominal
Flange Width: 0.0650 inches minimum and 0.0700 inches maximum
Right Internal Flange Hole Diameter: 0.7150 inches minimum and 0.7250 inches maximum
Right Internal Flange Width: 0.2350 inches nominal
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
Corner Shape: undercut left flange body corner
Hardness Rating: 34.0 rockwell c minimum and 38.0 rockwell c maximum overall
Surface Finish: 63.0 microinches outside diameter surface of body
Keyway Dimension: 0.0650 inches minimum and 0.0750 inches maximum internal keyway width
Keyway Dimension: 0.1050 inches nominal internal keyway depth
Keyway Dimension: 0.2350 inches nominal internal keyway length
Special Features: two keyways in id of internal flange
Material: steel comp 4130 or steel comp e4340 overall
Material Document And Classification: mil-s-6758 mil spec 1st material response or mil-s-5000 mil spec 2nd material response overall
Style Designator: solid, external flange one end, internal flange one end

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
70400-08107-120	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-01-221-4246?

The FSCG of the NSN 3120-01-221-4246 is 3120

Does the NSN 3120-01-221-4246 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-01-221-4246 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 3120-01-221-4246 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-221-4246 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 3120-01-221-4246 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Thu, Nov 28, 1985