3120-01-257-2258 Self-Aligning Plain Bearing

Comprehensive specifications and application details for NSN: 3120-01-257-2258.

Summary

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Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-01-257-2258
Item Name Code: 13208
Federal Item Identification Guide: A045A0
Assigment Date: 06/16/1987

A detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The item consists of a bored precision ground ball (or spherical plain bearing) around which an outer ring is fitted. The assembly may be either separable or nonseparable. Excludes:bearing, plain, rod end and bearing, plain, spherical.

ams 5659 assn std single material response outer race member material document and classification, ams 5387 assn std single material response inner member material document and classification, 37.0 rockwell c minimum inner member hardness rating, 0.4995 inches minimum and 0.5000 inches maximum bore diameter, 0.4980 inches minimum and 0.5000 inches maximum inner member width

Datasheet

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Bore Diameter: 0.4995 inches minimum and 0.5000 inches maximum
Hardness Rating: 37.0 rockwell c minimum inner member
Inner Member Width: 0.4980 inches minimum and 0.5000 inches maximum
Material Document And Classification: ams 5387 assn std single material response inner member
Material Document And Classification: ams 5659 assn std single material response outer race member
Material Document And Classification: mil-l-8937 mil spec single material response lubrication
Material: cobalt comp 6 inner member
Material: lubricant dry film lubrication
Material: steel comp xm-12 outer race member
Outer Member Outside Diameter: 0.9995 inches minimum and 1.0000 inches maximum
Outer Member Width: 0.3880 inches minimum and 0.3920 inches maximum
Static Radial Load Rating: 33872 pounds
Style Designator: without insert or liner with staking groove

Related Bearings

Explore the various bearing models associated with this NSN. Click on any bearing below to view detailed technical data, performance ratings, and application guidelines.

Part Number	Name
P21340	Self-Aligning Plain Bearing

Frequently Asked Questions

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What is the FSCG of the NSN 3120-01-257-2258?: The FSCG of the NSN 3120-01-257-2258 is 3120

Does the NSN 3120-01-257-2258 have a Schedule B code assigned?: Yes, the Schedule B code is 8482300040

Does NSN 3120-01-257-2258 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 3120-01-257-2258 contain precious materials?: Item does not contain precious metal.

Does NSN 3120-01-257-2258 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.