20X21

View detailed technical data, stock status, and sourcing information for: 20X21
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-275-0077

Item Name Code

00021

Assigment Date

01/01/1963 (63 years ago)

A cylindrical device in which the inner cone or outer cup turns upon a single or double row of tapered hardened rollers which roll easily in a race, thus minimizing friction and designed to carry a radial load and capable of sustaining axial thrust. Excludes:bearing,roller,thrust.

5.1181 inches nominal overall outside diameter, 0.3125 inches nominal standout width, 1.7500 inches nominal overall width, 2.5000 inches nominal bore diameter, 0.1250 inches nominal backface corner radius

Product Characteristics

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

Overall Width: 1.7500 inches nominal
Bore Diameter: 2.5000 inches nominal
Overall Outside Diameter: 5.1181 inches nominal
Backface Corner Radius: 0.1250 inches nominal
Standout Width: 0.3125 inches nominal
Cone Corner Radius: 0.1400 inches nominal
Cup Width: 1.4375 inches nominal
Standard Tolerance Designation: afbma class 3
Material: steel overall
Style Designator: straight bore, double cup, single cones

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
20X21	Tapered Roller Bearing
5584-5521	Tapered Roller Bearing

FAQs

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

What is the FSCG of the NSN 3110-00-275-0077?

The FSCG of the NSN 3110-00-275-0077 is 3110

Does the NSN 3110-00-275-0077 have a Schedule B code assigned?

Yes, the Schedule B code is 8482200030

Does NSN 3110-00-275-0077 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 3110-00-275-0077 contain precious materials?

Precious metal content is unknown

Does NSN 3110-00-275-0077 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 3110-00-275-0077 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963