A51B20820-1

View detailed technical data, stock status, and sourcing information for: A51B20820-1
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-107-1261

Item Name Code

13209

Assigment Date

04/27/1973 (53 years ago)

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 outer member of the assembly is modified to provide a shank. The inner member may be either a plain spherical bearing or a sleeve bearing. Excludes:bearing, plain, spherical and bearing, plain, self-aligning.

3a thread class, externally threaded shank style, left-hand thread direction, 5.2500 inches nominal overall length, 1.5000 inches nominal outer member outside diameter

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: left-hand
Shank Style: externally threaded
Overall Length: 5.2500 inches nominal
Outer Member Outside Diameter: 1.5000 inches nominal
Bore Center To Shank End Distance: 4.5000 inches nominal
Outer Member Width: 0.5310 inches minimum and 0.5410 inches maximum
Shank Thread Length: 1.9500 inches nominal
Style Designator: ball type

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
A51B20820-1	Rod End Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-107-1261?

The FSCG of the NSN 3120-00-107-1261 is 3120

Does the NSN 3120-00-107-1261 have a Schedule B code assigned?

Yes, the Schedule B code is 8483308055

Does NSN 3120-00-107-1261 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 3120-00-107-1261 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-107-1261 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 3120-00-107-1261 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Fri, Apr 27, 1973