A51B21709-19

View detailed technical data, stock status, and sourcing information for: A51B21709-19
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-326-3715

Item Name Code

13206

Assigment Date

12/03/1973 (52 years ago)

A tubular shaped unthreaded item with or without a flange at one end designed to be inserted into a hole to reduce the inside diameter of the hole and to protect the surrounding body structure from damage resulting from stress, strain, and/or vibration. The overall length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body. Includes items which are divided into two or more segments which includes 180 degrees (3.141 radians) or less of the bearing periphery. For items made of rubber, see bushing, nonmetallic. See also bearing, sleeve; bushing, tapered; spacer, sleeve; insulator, bushing; and bushing, electrical conductor. Excludes:bushing, drill, jig.

38.0 rockwell c minimum and 44.0 rockwell c maximum overall hardness rating, 1.5010 inches minimum and 1.5020 inches maximum body outside diameter, 0.7400 inches minimum and 0.7500 inches maximum overall length, square all corners corner shape, 1.1875 inches minimum and 1.1895 inches maximum body inside diameter

Product Characteristics

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

Overall Length: 0.7400 inches minimum and 0.7500 inches maximum
Body Outside Diameter: 1.5010 inches minimum and 1.5020 inches maximum
Body Inside Diameter: 1.1875 inches minimum and 1.1895 inches maximum
Corner Shape: square all corners
Hardness Rating: 38.0 rockwell c minimum and 44.0 rockwell c maximum overall
Surface Finish: 125.0 microinches left end surface of body
Surface Finish: 125.0 microinches right end surface of body
Surface Finish: 63.0 microinches inside diameter surface of body
Surface Finish: 63.0 microinches outside diameter surface of body
Material: steel comp xm-12 overall
Surface Treatment: passivate overall
Style Designator: solid, plain, no outside flanges
Test Data Document: "81349-mil-i-6868 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."

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
A51B21709-19	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-326-3715?

The FSCG of the NSN 3120-00-326-3715 is 3120

Does the NSN 3120-00-326-3715 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-326-3715 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 3120-00-326-3715 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-326-3715 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 3120-00-326-3715 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Mon, Dec 3, 1973