Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R120 found under Bearing Roller Cylindrical by Equitable Bearing Co Inc. The National Stock Number assigned to this part is 3110001557338, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R120.