81581

View detailed technical data, stock status, and sourcing information for: 81581
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-439-2579

Item Name Code

00014

Assigment Date

12/03/1969 (56 years ago)

An assembled inner component of a tapered roller bearing, consisting of a cone (which provides a contact surface for the rolling elements of the bearing), a complement of tapered rollers (the rolling elements), and frequently a retainer (which spaces the rolling elements).

1.4077 inches minimum and 1.4082 inches maximum overall outside diameter, ground surface finish, 0.8740 inches minimum and 0.8760 inches maximum bore diameter, 0.3600 inches minimum and 0.3900 inches maximum overall width, pressed retainer fabrication method

Product Characteristics

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

Overall Width: 0.3600 inches minimum and 0.3900 inches maximum
Bore Diameter: 0.8740 inches minimum and 0.8760 inches maximum
Overall Outside Diameter: 1.4077 inches minimum and 1.4082 inches maximum
Surface Finish: ground
Retainer Fabrication Method: pressed
Seal Quantity: 1
Bearing Seal Type: contact
Load Direction: radial
Bore Shape: straight
Internal Clearance: 0.0005 inches minimum radial and 0.0040 inches maximum radial
Material: rubber synthetic seal
Material: steel ball
Material: steel inner ring
Material: steel outer ring
Material: steel retainer
Style Designator: non-loading groove, non-separable

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3110-00-913-9615	No Name Available	12/28/1970

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
22314-8	Annular Ball Bearing
4994913	Annular Ball Bearing
81581	Annular Ball Bearing
9418814	Annular Ball Bearing
D81581	Annular Ball Bearing

FAQs

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

What is the FSCG of the NSN 3110-00-439-2579?

The FSCG of the NSN 3110-00-439-2579 is 3110

Does the NSN 3110-00-439-2579 have a Schedule B code assigned?

Yes, the Schedule B code is 8482105028

Does NSN 3110-00-439-2579 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 3110-00-439-2579 contain precious materials?

Precious metal content is unknown

Does NSN 3110-00-439-2579 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 3110-00-439-2579 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Wed, Dec 3, 1969