12C21

View detailed technical data, stock status, and sourcing information for: 12C21
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-101-4196

Item Name Code

00021

Assigment Date

01/01/1961 (65 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.

3.3750 inches nominal bore diameter, 6.3750 inches nominal overall outside diameter, 1.8750 inches nominal overall width, 0.3750 inches nominal standout width, 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: 1.8750 inches nominal
Bore Diameter: 3.3750 inches nominal
Overall Outside Diameter: 6.3750 inches nominal
Backface Corner Radius: 0.1250 inches nominal
Standout Width: 0.3750 inches nominal
Cone Corner Radius: 0.1400 inches nominal
Cone Width: 1.9000 inches nominal
Cup Width: 1.5000 inches nominal
Retainer Fabrication Method: pressed
Standard Tolerance Designation: afbma class 2
Material: steel overall
Style Designator: straight bore, normal angle

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
12C21	Tapered Roller Bearing
1982432	Tapered Roller Bearing
25Z259D25	Tapered Roller Bearing
758-752	Tapered Roller Bearing
758752	Tapered Roller Bearing
8083552	Tapered Roller Bearing
A26746	Tapered Roller Bearing
ASD1506	Tapered Roller Bearing

FAQs

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

What is the FSCG of the NSN 3110-00-101-4196?

The FSCG of the NSN 3110-00-101-4196 is 3110

Does the NSN 3110-00-101-4196 have a Schedule B code assigned?

Yes, the Schedule B code is 8482200030

Does NSN 3110-00-101-4196 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 3110-00-101-4196 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-00-101-4196 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 3110-00-101-4196 was assigned to the Federal Catalog?

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