M81936/1-13

View detailed technical data, stock status, and sourcing information for: M81936/1-13
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-038-5444

Item Name Code

13208

Assigment Date

04/08/1977 (49 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

1.5620 inches minimum and 1.5625 inches maximum outer member outside diameter, 59000 pounds static radial load rating, 0.8070 inches minimum and 0.8120 inches maximum inner member width, 0.6450 inches minimum and 0.6500 inches maximum outer member width, 0.8120 inches minimum and 0.8125 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: 0.8120 inches minimum and 0.8125 inches maximum
Outer Member Outside Diameter: 1.5620 inches minimum and 1.5625 inches maximum
Outer Member Width: 0.6450 inches minimum and 0.6500 inches maximum
Inner Member Width: 0.8070 inches minimum and 0.8120 inches maximum
Static Radial Load Rating: 59000 pounds
Hardness Rating: 37.0 rockwell c minimum inner member
Hardness Rating: 28.0 rockwell c minimum and 36.0 rockwell c maximum outer race 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Below is a list of NSNs that have been officially superseded by this NSN: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
3120-00-270-7790	No Name Available	03/01/1978

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
55842-13	Self-Aligning Plain Bearing
AGB13VA	Self-Aligning Plain Bearing
AS81936/1-13	Self-Aligning Plain Bearing
BSSN13-2025G3	Self-Aligning Plain Bearing
KSB13-27GA	Self-Aligning Plain Bearing
M81396/1-13	Self-Aligning Plain Bearing
M81936/1-13	Self-Aligning Plain Bearing
SBU26RGH50A	Self-Aligning Plain Bearing
ST4M123G13	Self-Aligning Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-01-038-5444?

The FSCG of the NSN 3120-01-038-5444 is 3120

Does the NSN 3120-01-038-5444 have a Schedule B code assigned?

Yes, the Schedule B code is 8482300040

Does NSN 3120-01-038-5444 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 3120-01-038-5444 contain precious materials?

Precious metal content is unknown

Does NSN 3120-01-038-5444 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 3120-01-038-5444 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Fri, Apr 8, 1977