Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TIMKEN6680-6535 found under Bearing Roller Tapered by Heligear Acquisition Co. The National Stock Number assigned to this part is 3110001005983, 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 TIMKEN6680-6535.