ST4M139P9-57

View detailed technical data, stock status, and sourcing information for: ST4M139P9-57
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-129-2226

Item Name Code

13206

Assigment Date

04/04/1982 (44 years ago)

A detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The item consists of a bored precision ground ball (or spherical plain bearing) around which an outer ring is fitted. The assembly may be either separable or nonseparable. Excludes:bearing, plain, rod end and bearing, plain, spherical.

0.6250 inches minimum and 0.6370 inches maximum overall length, 0.6892 inches minimum and 0.6902 inches maximum body outside diameter, 0.0600 inches minimum and 0.0620 inches maximum flange width, 0.8020 inches minimum and 0.8220 inches maximum flange outside diameter, 0.5560 inches minimum and 0.5575 inches maximum body inside 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: 0.6250 inches minimum and 0.6370 inches maximum
Body Outside Diameter: 0.6892 inches minimum and 0.6902 inches maximum
Body Inside Diameter: 0.5560 inches minimum and 0.5575 inches maximum
Flange Outside Diameter: 0.8020 inches minimum and 0.8220 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
Surface Finish: 125.0 microinches overall
Material: copper alloy 630 overall
Surface Treatment: cadmium and chromate 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
4M139P9-57	Sleeve Bushing
ST4M139P9-57	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-01-129-2226?

The FSCG of the NSN 3120-01-129-2226 is 3120

Does the NSN 3120-01-129-2226 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-01-129-2226 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 3120-01-129-2226 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-129-2226 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 3120-01-129-2226 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Sun, Apr 4, 1982