M81936/1-20

View detailed technical data, stock status, and sourcing information for: M81936/1-20
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-281-3062

Item Name Code

13208

Assigment Date

08/25/1973 (52 years ago)

0.9950 inches minimum and 1.0000 inches maximum outer member width, 1.2495 inches minimum and 1.2500 inches maximum bore diameter, 2.3120 inches minimum and 2.3125 inches maximum outer member outside diameter, 152000 pounds static radial load rating, 1.2450 inches minimum and 1.2500 inches maximum inner member width

Product Characteristics

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

Bore Diameter: 1.2495 inches minimum and 1.2500 inches maximum
Outer Member Outside Diameter: 2.3120 inches minimum and 2.3125 inches maximum
Outer Member Width: 0.9950 inches minimum and 1.0000 inches maximum
Inner Member Width: 1.2450 inches minimum and 1.2500 inches maximum
Static Radial Load Rating: 152000 pounds
Hardness Rating: 36.0 rockwell c minimum and 37.0 rockwell c maximum outer race member
Hardness Rating: 238.0 rockwell c nominal inner member
Lubrication Feature: groove external outer member
Lubrication Feature: groove internal inner member
Lubrication Feature: groove internal outer member
Lubrication Feature: perforation outer race member
Lubrication Feature: perforation inner member
Material: copper alloy 172 or copper alloy 173 inner member
Material: grease lubrication
Material: steel comp 630 outer race member
Material Document And Classification: mil-g-81322 mil spec single material response lubrication
Style Designator: without insert or liner with staking groove

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3120-01-047-8019	No Name Available	12/01/1987

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
55842-20	Self-Aligning Plain Bearing
AGB20VA	Self-Aligning Plain Bearing
AS81936/1	Self-Aligning Plain Bearing
BSSN20-2025G3	Self-Aligning Plain Bearing
KSB20-27GA	Self-Aligning Plain Bearing
M81936/1-20	Self-Aligning Plain Bearing
MIL-B-81936	Self-Aligning Plain Bearing
SAE AS81936/1	Self-Aligning Plain Bearing
SBU40RGH74A	Self-Aligning Plain Bearing
SBU40RGH74M	Self-Aligning Plain Bearing
ST4M123G20	Self-Aligning Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-281-3062?

The FSCG of the NSN 3120-00-281-3062 is 3120

Does the NSN 3120-00-281-3062 have a Schedule B code assigned?

Yes, the Schedule B code is 8482300040

Does NSN 3120-00-281-3062 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 3120-00-281-3062 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-281-3062 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 3120-00-281-3062 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Sat, Aug 25, 1973