3120-01-257-4388

Find complete technical information, availability, and procurement data for: 3120-01-257-4388
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 3120-01-257-4388 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-257-4388

Item Name Code

13206

Assigment Date

06/19/1987 (39 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.

0.3766 inches minimum and 0.3771 inches maximum body outside diameter, 0.1820 inches nominal overall length, 0.2435 inches minimum and 0.2450 inches maximum body inside diameter, 0.0600 inches minimum and 0.0620 inches maximum flange width, 0.4900 inches minimum and 0.5100 inches maximum flange outside diameter

Product Characteristics

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

Overall Length: 0.1820 inches nominal
Body Outside Diameter: 0.3766 inches minimum and 0.3771 inches maximum
Body Inside Diameter: 0.2435 inches minimum and 0.2450 inches maximum
Flange Outside Diameter: 0.4900 inches minimum and 0.5100 inches maximum
Flange Width: 0.0600 inches minimum and 0.0620 inches maximum
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
Material: copper alloy 172 and copper alloy 173 overall
Material Document And Classification: qq-c-530,cond h t fed spec single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 2 fed spec single treatment response overall
Style Designator: solid, external 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
4M139	Sleeve Bushing
ST4M139BCP6-12	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-01-257-4388?

The FSCG of the NSN 3120-01-257-4388 is 3120

Does the NSN 3120-01-257-4388 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-01-257-4388 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 3120-01-257-4388 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-257-4388 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 3120-01-257-4388 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Jun 19, 1987