Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X3003 found under Bearing Ball Annula by Wico Prestolite Co The Div Of Eltra. The National Stock Number assigned to this part is 3110006794139, 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 X3003.