3120-01-042-4508

Find complete technical information, availability, and procurement data for: 3120-01-042-4508
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-042-4508

Item Name Code

13208

Assigment Date

06/10/1977 (49 years ago)

An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes:straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.

0.3850 inches minimum and 0.3900 inches maximum outer member width, 0.9995 inches minimum and 1.0000 inches maximum outer member outside diameter, 56.0 rockwell c nominal inner member hardness rating, 0.4950 inches minimum and 0.5000 inches maximum inner member width, 0.4995 inches minimum and 0.5000 inches maximum bore diameter

Product Characteristics

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

Bore Diameter: 0.4995 inches minimum and 0.5000 inches maximum
Outer Member Outside Diameter: 0.9995 inches minimum and 1.0000 inches maximum
Outer Member Width: 0.3850 inches minimum and 0.3900 inches maximum
Inner Member Width: 0.4950 inches minimum and 0.5000 inches maximum
Hardness Rating: 56.0 rockwell c nominal inner member
Lubrication Feature: groove external outer member
Lubrication Feature: groove inside diameter surface of body
Lubrication Feature: groove internal inner member
Lubrication Feature: perforation outer race member
Lubrication Feature: perforation inner member
Special Features: lubricant on spherical surface of outer race member and bore of inner race member
Material: copper alloy outer race member
Material: lubricant dry film lubrication
Material: steel comp e52100 or steel comp 440c inner member
Surface Treatment: cadmium outer race member
Surface Treatment: chromium inner member
Style Designator: without insert or liner

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
AG8SP17	Self-Aligning Plain Bearing
GB14A8	Self-Aligning Plain Bearing
KSBG8-10	Self-Aligning Plain Bearing
LHPB-8GA	Self-Aligning Plain Bearing
RPG-8A	Self-Aligning Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-01-042-4508?

The FSCG of the NSN 3120-01-042-4508 is 3120

Does the NSN 3120-01-042-4508 have a Schedule B code assigned?

Yes, the Schedule B code is 8482300040

Does NSN 3120-01-042-4508 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 3120-01-042-4508 contain precious materials?

Precious metal content is unknown

Does NSN 3120-01-042-4508 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 3120-01-042-4508 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Fri, Jun 10, 1977