A21180-1

View detailed technical data, stock status, and sourcing information for: A21180-1
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-01-018-7289

Item Name Code

00051

Assigment Date

03/30/1976 (50 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.

2.5312 inches nominal overall outside diameter, ground surface finish, 1.8120 inches minimum and 1.8125 inches maximum bore diameter, 0.9900 inches minimum and 1.0000 inches maximum outer ring width, 1.0050 inches minimum and 1.0100 inches maximum inner ring width

Product Characteristics

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

Bore Diameter: 1.8120 inches minimum and 1.8125 inches maximum
Overall Outside Diameter: 2.5312 inches nominal
Outer Ring Width: 0.9900 inches minimum and 1.0000 inches maximum
Inner Ring Width: 1.0050 inches minimum and 1.0100 inches maximum
Surface Finish: ground
Retainer Fabrication Method: pressed
Alignment Type: rigid
Standard Tolerance Designation: afbma std tolerance for industrial needle bearings
Lubrication Material: lubricant
Material: steel overall
Style Designator: separable inner race, drawn shell

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
A21180-1	Needle Roller Bearing
BH-3316IR-2916	Needle Roller Bearing

FAQs

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

What is the FSCG of the NSN 3110-01-018-7289?

The FSCG of the NSN 3110-01-018-7289 is 3110

Does the NSN 3110-01-018-7289 have a Schedule B code assigned?

Yes, the Schedule B code is 8482400000

Does NSN 3110-01-018-7289 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 3110-01-018-7289 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-01-018-7289 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 3110-01-018-7289 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Tue, Mar 30, 1976