251W

View detailed technical data, stock status, and sourcing information for: 251W
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-117-0777

Item Name Code

00020

Assigment Date

01/01/1961 (65 years ago)

An antifriction bearing having a roller rolling element, designed to resist axial thrust, or to support an axial load.

4.3750 inches minimum and 4.3800 inches maximum overall outside diameter, 2.5080 inches minimum and 2.5120 inches maximum bore diameter, rigid alignment type, ground surface finish, 1.0575 inches minimum and 1.0675 inches maximum overall height

Product Characteristics

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

Overall Height: 1.0575 inches minimum and 1.0675 inches maximum
Bore Diameter: 2.5080 inches minimum and 2.5120 inches maximum
Overall Outside Diameter: 4.3750 inches minimum and 4.3800 inches maximum
Surface Finish: ground
Alignment Type: rigid
Thrust Directional Capability Designation: single
Special Features: w/oil hole in band also radius at obre chamfer 1/32 in. by 45 deg
Material: steel overall
Style Designator: tapered rollers, banded od

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3110-01-288-1006	No Name Available	09/01/1997

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
251W	Thrust Roller Bearing
370191968	Thrust Roller Bearing
5555785	Thrust Roller Bearing
T251W	Thrust Roller Bearing

FAQs

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

What is the FSCG of the NSN 3110-00-117-0777?

The FSCG of the NSN 3110-00-117-0777 is 3110

Does the NSN 3110-00-117-0777 have a Schedule B code assigned?

Yes, the Schedule B code is 8482800080

Does NSN 3110-00-117-0777 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 3110-00-117-0777 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-00-117-0777 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 3110-00-117-0777 was assigned to the Federal Catalog?

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