21-012-18-44

View detailed technical data, stock status, and sourcing information for: 21-012-18-44
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-997-6320

Item Name Code

13206

Assigment Date

11/16/1966 (59 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.

chamfered inside right corner corner shape, 0.7510 inches minimum and 0.7515 inches maximum body outside diameter, 0.5620 inches minimum and 0.5630 inches maximum body inside diameter, chamfered inside left corner corner shape, 1.3720 inches minimum and 1.3780 inches maximum 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: 1.3720 inches minimum and 1.3780 inches maximum
Body Outside Diameter: 0.7510 inches minimum and 0.7515 inches maximum
Body Inside Diameter: 0.5620 inches minimum and 0.5630 inches maximum
Corner Shape: chamfered inside left corner
Corner Shape: chamfered inside right corner
Corner Shape: square outside left corner
Corner Shape: square outside right corner
Hardness Rating: 26.0 rockwell c minimum and 33.0 rockwell c maximum overall
Material: steel overall
Surface Treatment: cadmium and chromium overall
Style Designator: solid, plain, no outside flanges

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
21-012-18-44	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-997-6320?

The FSCG of the NSN 3120-00-997-6320 is 3120

Does the NSN 3120-00-997-6320 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-997-6320 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 3120-00-997-6320 contain precious materials?

Precious metal content is unknown

Does NSN 3120-00-997-6320 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 3120-00-997-6320 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Wed, Nov 16, 1966