21308NR

View detailed technical data, stock status, and sourcing information for: 21308NR
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-01-131-3798

Item Name Code

00016

Assigment Date

05/11/1982 (44 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.

straight bore shape, 90.00 millimeters nominal overall outside diameter, 23.00 millimeters nominal overall width, 40.00 millimeters nominal bore diameter, ground surface finish

Product Characteristics

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

Overall Width: 23.00 millimeters nominal
Bore Diameter: 40.00 millimeters nominal
Overall Outside Diameter: 90.00 millimeters nominal
Surface Finish: ground
Bore Shape: straight
Internal Fit-Up Designation: standard
Standard Tolerance Designation: rbec no.1
Special Features: furnished w/snap ring and groove on od
Material: steel overall
Style Designator: double row, spherical rollers, self-contained, outer and inner raceways concave, non-separable

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
21308NR	Self-Aligning Roller Bearing
S238147	Self-Aligning Roller Bearing

FAQs

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

What is the FSCG of the NSN 3110-01-131-3798?

The FSCG of the NSN 3110-01-131-3798 is 3110

Does the NSN 3110-01-131-3798 have a Schedule B code assigned?

Yes, the Schedule B code is 8482800080

Does NSN 3110-01-131-3798 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 3110-01-131-3798 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-01-131-3798 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 3110-01-131-3798 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Tue, May 11, 1982