Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 99305-4ES100NT found under Bearing Ball Annular by Hoover Group Inc. The National Stock Number assigned to this part is 3110009873720, 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 99305-4ES100NT.