1R88

View detailed technical data, stock status, and sourcing information for: 1R88
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-271-0177

Item Name Code

00028

Assigment Date

01/01/1961 (65 years ago)

An insulator having flat surfaces, with or without holes, whose thickness does not exceed 25 percent of its length or width, whichever is smaller, and whose shape is other than round. Excludes:insulator (1), spacer; insulator (1), washer; mounting pad, electrical-electronic component; plate, electrical shield; and terminal board.

0.5000 inches nominal overall width, ground surface finish, 0.5000 inches nominal bore diameter, 0.7500 inches nominal overall outside diameter, straight bore shape

Product Characteristics

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

Overall Width: 0.5000 inches nominal
Bore Diameter: 0.5000 inches nominal
Overall Outside Diameter: 0.7500 inches nominal
Surface Finish: ground
Bore Shape: straight
Standard Tolerance Designation: afbma std tolerance for industrial needle bearings
Special Features: slight chamfer on both ends
Material: steel overall
Style Designator: solid inner race, with bore chamfer, journal and needle

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4920-00-996-3887	No Name Available	06/23/1971

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
1R88	Inner Bearing Ring
ASTM F2163	Inner Bearing Ring
IR-88-L	Inner Bearing Ring
IR88	Inner Bearing Ring
MS17130-65	Inner Bearing Ring

FAQs

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

What is the FSCG of the NSN 3110-00-271-0177?

The FSCG of the NSN 3110-00-271-0177 is 3110

Does the NSN 3110-00-271-0177 have a Schedule B code assigned?

Yes, the Schedule B code is 8482991010

Does NSN 3110-00-271-0177 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 3110-00-271-0177 contain precious materials?

Precious metal content is unknown

Does NSN 3110-00-271-0177 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 3110-00-271-0177 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961