3120-01-121-1778

Find complete technical information, availability, and procurement data for: 3120-01-121-1778
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-121-1778

Item Name Code

13205

Assigment Date

10/31/1981 (44 years ago)

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.

1.1250 inches nominal flange outside diameter, 0.7520 inches minimum and 0.7540 inches maximum body inside diameter, 0.8765 inches minimum and 0.8771 inches maximum body outside diameter, 0.0590 inches minimum and 0.0600 inches maximum flange width, 0.2890 inches minimum and 0.3000 inches maximum overall length

Product Characteristics

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

Overall Length: 0.2890 inches minimum and 0.3000 inches maximum
Body Outside Diameter: 0.8765 inches minimum and 0.8771 inches maximum
Body Inside Diameter: 0.7520 inches minimum and 0.7540 inches maximum
Flange Outside Diameter: 1.1250 inches nominal
Flange Width: 0.0590 inches minimum and 0.0600 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
Surface Finish: 125.0 microinches inside diameter surface of body
Surface Finish: 125.0 microinches outside diameter surface of flange
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: 63.0 microinches outside diameter surface of body
Special Features: plastic liner bonded to left end surface of flange
Material: aluminum alloy 2024 outer layer
Material: plastic inner layer
Style Designator: solid, external flange one end
Test Data Document: "76301-ps21202 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."

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
10107767	Sleeve Bearing
74A410690-2001	Sleeve Bearing

FAQs

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

What is the FSCG of the NSN 3120-01-121-1778?

The FSCG of the NSN 3120-01-121-1778 is 3120

Does the NSN 3120-01-121-1778 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997090

Does NSN 3120-01-121-1778 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 3120-01-121-1778 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-121-1778 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 3120-01-121-1778 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Sat, Oct 31, 1981