M81935/2-12

View detailed technical data, stock status, and sourcing information for: M81935/2-12
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-242-6253

Item Name Code

13209

Assigment Date

10/14/1986 (39 years ago)

A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes:flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. Excludes:disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.

right-hand thread direction, internally threaded w/hexagon end and inspection hole shank style, 0.7495 inches minimum and 0.7500 inches maximum bore diameter, 2.7625 inches nominal overall length, 3b 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: 3b
Thread Direction: right-hand
Shank Style: internally threaded w/hexagon end and inspection hole
Overall Length: 2.7625 inches nominal
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: 1.6250 inches nominal
Inspection Hole Center To End Distance: 0.7920 inches minimum and 0.8320 inches maximum
Shank Width Across Wrench Flats: 0.9900 inches minimum and 1.0020 inches maximum
Thread Diameter: 0.750 inches nominal
Thread Quantity Per Inch: 16
Hardness Rating: 39.0 rockwell c minimum and 42.0 rockwell c maximum rod end body
Hardness Rating: 55.0 rockwell c minimum and 62.0 rockwell c maximum inner member
Hardness Rating: 28.0 rockwell c minimum and 37.0 rockwell c maximum outer ring
Special Features: keyway in shank; surface finish on ball passivate per mil-s-5002 optional
Material: plastic polytetrafluoroethylene 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 type 2,class 2 fed spec all treatment responses rod end body
Style Designator: ball type
Thread Series Designator: unjf
Specification/Standard Data: 81349-mil-b-81935 government specification

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
10424146	Rod End Plain Bearing
AS81935/2-12K	Rod End Plain Bearing
M81935/2-12	Rod End Plain Bearing
M81935/2-12K	Rod End Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-01-242-6253?

The FSCG of the NSN 3120-01-242-6253 is 3120

Does the NSN 3120-01-242-6253 have a Schedule B code assigned?

Yes, the Schedule B code is 8483308055

Does NSN 3120-01-242-6253 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 3120-01-242-6253 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-242-6253 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 3120-01-242-6253 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Tue, Oct 14, 1986