121990

View detailed technical data, stock status, and sourcing information for: 121990
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-100-0355

Item Name Code

00024

Assigment Date

01/01/1961 (65 years ago)

An outer component of a tapered roller bearing which provides a contact surface for the rolling elements of the bearing.

steel overall material, 2.7500 inches nominal outside diameter, 0.0469 inches nominal backface corner radius, 0.7500 inches nominal overall width, afbma class 2 standard tolerance designation

Product Characteristics

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

Outside Diameter: 2.7500 inches nominal
Overall Width: 0.7500 inches nominal
Backface Corner Radius: 0.0469 inches nominal
Standard Tolerance Designation: afbma class 2
Material: steel overall
Style Designator: normal angle

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4310-00-025-6330	No Name Available	02/05/1969

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
02881A	Tapered Roller Bearing Cup
02881AB	Tapered Roller Bearing Cup
103S14	Tapered Roller Bearing Cup
121990	Tapered Roller Bearing Cup
17X116	Tapered Roller Bearing Cup
20A530	Tapered Roller Bearing Cup
22337997	Tapered Roller Bearing Cup
243X48	Tapered Roller Bearing Cup
2523	Tapered Roller Bearing Cup
27T1040	Tapered Roller Bearing Cup
302677	Tapered Roller Bearing Cup
4-0R5A	Tapered Roller Bearing Cup
44963	Tapered Roller Bearing Cup
49-002	Tapered Roller Bearing Cup
50213V	Tapered Roller Bearing Cup
535667	Tapered Roller Bearing Cup
581585	Tapered Roller Bearing Cup
698390	Tapered Roller Bearing Cup
706740	Tapered Roller Bearing Cup
7422337997	Tapered Roller Bearing Cup
807-22	Tapered Roller Bearing Cup
81L105B	Tapered Roller Bearing Cup
827445	Tapered Roller Bearing Cup
BT2523	Tapered Roller Bearing Cup
CUP2523	Tapered Roller Bearing Cup
D2523	Tapered Roller Bearing Cup
FF535667	Tapered Roller Bearing Cup
FS4030	Tapered Roller Bearing Cup
FT7003	Tapered Roller Bearing Cup
K2523	Tapered Roller Bearing Cup
M4610-15-21	Tapered Roller Bearing Cup
M4746-7-19	Tapered Roller Bearing Cup
N107766	Tapered Roller Bearing Cup
T2523	Tapered Roller Bearing Cup
USU17X116	Tapered Roller Bearing Cup
V1609	Tapered Roller Bearing Cup

FAQs

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

What is the FSCG of the NSN 3110-00-100-0355?

The FSCG of the NSN 3110-00-100-0355 is 3110

Does the NSN 3110-00-100-0355 have a Schedule B code assigned?

Yes, the Schedule B code is 8482800080

Does NSN 3110-00-100-0355 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 3110-00-100-0355 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-00-100-0355 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 3110-00-100-0355 was assigned to the Federal Catalog?

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