3120-01-251-3012

Find complete technical information, availability, and procurement data for: 3120-01-251-3012
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-251-3012

Item Name Code

13209

Assigment Date

03/17/1987 (39 years ago)

A positive displacement device which utilzes the rotating motion of one or more gears, cams, vanes, or screws in an enclosure as a means of transferring a liquid from one place to another. It is designed to be driven manually or by a prime mover which is not an integral part of the pump. Excludes:aircraft engine pumps.

3a thread class, 5.5125 inches nominal overall length, 0.9995 inches minimum and 1.0000 inches maximum bore diameter, externally threaded shank style, right-hand thread direction

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: right-hand
Shank Style: externally threaded
Overall Length: 5.5125 inches nominal
Bore Diameter: 0.9995 inches minimum and 1.0000 inches maximum
Outer Member Outside Diameter: 2.7650 inches minimum and 2.7850 inches maximum
Bore Center To Shank End Distance: 4.1150 inches minimum and 4.1350 inches maximum
Outer Member Width: 1.0100 inches minimum and 1.0200 inches maximum
Inner Member Width: 1.3730 inches minimum and 1.3750 inches maximum
Shank Thread Length: 2.3120 inches minimum and 2.3740 inches maximum
Thread Diameter: 1.250 inches nominal
Thread Quantity Per Inch: 12
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 0.093 in. min wide 0.098 in. max wide; 0.060 in. min deep 0.065 in. max deep; 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 outer ring
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 outer ring
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 single treatment response rod end body
Style Designator: ball type
Thread Series Designator: unjf
Specification/Standard Data: 81349-mil-b-81935/1a 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
M81935/1-16K	Rod End Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-01-251-3012?

The FSCG of the NSN 3120-01-251-3012 is 3120

Does the NSN 3120-01-251-3012 have a Schedule B code assigned?

Yes, the Schedule B code is 8483308055

Does NSN 3120-01-251-3012 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 3120-01-251-3012 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-251-3012 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 3120-01-251-3012 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Tue, Mar 17, 1987