M81935/1-12

View detailed technical data, stock status, and sourcing information for: M81935/1-12
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-049-4165

Item Name Code

13209

Assigment Date

10/19/1977 (48 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.

externally threaded shank style, right-hand thread direction, 0.7495 inches minimum and 0.7500 inches maximum bore diameter, 3.7475 inches minimum and 3.7775 inches maximum overall length, 3a thread class

Product Characteristics

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

Thread Class: 3a
Thread Direction: right-hand
Shank Style: externally threaded
Overall Length: 3.7475 inches minimum and 3.7775 inches maximum
Bore Diameter: 0.7495 inches minimum and 0.7500 inches maximum
Outer Member Outside Diameter: 1.7650 inches minimum and 1.7850 inches maximum
Bore Center To Shank End Distance: 2.8650 inches minimum and 2.8850 inches maximum
Outer Member Width: 0.6350 inches minimum and 0.6450 inches maximum
Inner Member Width: 0.8730 inches minimum and 0.8750 inches maximum
Shank Thread Length: 1.6560 inches minimum and 1.7180 inches maximum
Static Radial Load Rating: 29300 pounds
Thread Diameter: 0.7500 inches nominal
Thread Quantity Per Inch: 16
Special Features: 13 deg self-aligning in either direction,grooves in outer race member
Material: plastic race liner
Material: steel comp 440c inner member
Material: steel comp 630 race insert
Material: steel comp e4340 rod end body
Material Document And Classification: ams 5630 assn std single material response inner member
Material Document And Classification: ams 5643 assn std single material response race insert
Material Document And Classification: mil-s-5000 mil spec single material response rod end body
Surface Treatment: cadmium and chromate rod end body
Surface Treatment Document And Classification: qq-p-416, cl2 fed spec single treatment response rod end body
Style Designator: ball type
Thread Series Designator: unjf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3120-01-032-8325	No Name Available	01/01/1981

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
M81935/1-12	Rod End Plain Bearing
MIL-B-81935/1	Rod End Plain Bearing
MS1242S12	Rod End Plain Bearing
REM24W24	Rod End Plain Bearing
REM24W24M	Rod End Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-01-049-4165?

The FSCG of the NSN 3120-01-049-4165 is 3120

Does the NSN 3120-01-049-4165 have a Schedule B code assigned?

Yes, the Schedule B code is 8483308055

Does NSN 3120-01-049-4165 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 3120-01-049-4165 contain precious materials?

Precious metal content is unknown

Does NSN 3120-01-049-4165 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 3120-01-049-4165 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Wed, Oct 19, 1977