A51B91584-11

View detailed technical data, stock status, and sourcing information for: A51B91584-11
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-309-2650

Item Name Code

13206

Assigment Date

10/13/1989 (36 years ago)

A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). For items having other than a round or hexagon peripheral shape, see spacer, plate. Excludes:items with lubricating features, see bearing, sleeve and bushing, sleeve. See also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).

2.5020 inches minimum and 2.5030 inches maximum body outside diameter, 0.0570 inches minimum and 0.0620 inches maximum flange width, 2.7500 inches nominal flange outside diameter, 2.2700 inches minimum and 2.2750 inches maximum body inside diameter, 0.7500 inches nominal overall length

Product Characteristics

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

Overall Length: 0.7500 inches nominal
Body Outside Diameter: 2.5020 inches minimum and 2.5030 inches maximum
Body Inside Diameter: 2.2700 inches minimum and 2.2750 inches maximum
Flange Outside Diameter: 2.7500 inches nominal
Flange Width: 0.0570 inches minimum and 0.0620 inches maximum
Corner Shape: square all corners
Hardness Rating: 40.0 rockwell c minimum and 46.0 rockwell c maximum overall
Surface Finish: 63.0 microinches outside diameter surface of body
Material: steel comp xm-12 overall
Material Document And Classification: ams 5659 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Style Designator: solid, external flange one end

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
A51B91584-11	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-01-309-2650?

The FSCG of the NSN 3120-01-309-2650 is 3120

Does the NSN 3120-01-309-2650 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-01-309-2650 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 3120-01-309-2650 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-309-2650 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 3120-01-309-2650 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Fri, Oct 13, 1989