158506R1

View detailed technical data, stock status, and sourcing information for: 158506R1
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-765-6686

Item Name Code

13211

Assigment Date

01/01/1962 (64 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.

0.6149 inches minimum and 0.6200 inches maximum counterbore depth, 0.7640 inches minimum and 0.7740 inches maximum overall thickness, 2.1578 inches minimum and 2.1583 inches maximum counterbore diameter

Product Characteristics

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

Counterbore Diameter: 2.1578 inches minimum and 2.1583 inches maximum
Counterbore Depth: 0.6149 inches minimum and 0.6200 inches maximum
Overall Thickness: 0.7640 inches minimum and 0.7740 inches maximum

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2520-00-806-3743	No Name Available	01/01/1963

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
147540	Thrust Washer Bearing
158506R1	Thrust Washer Bearing
74454	Thrust Washer Bearing
F120576	Thrust Washer Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-765-6686?

The FSCG of the NSN 3120-00-765-6686 is 3120

Does the NSN 3120-00-765-6686 have a Schedule B code assigned?

Yes, the Schedule B code is 8482105008

Does NSN 3120-00-765-6686 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 3120-00-765-6686 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-765-6686 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 3120-00-765-6686 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962