Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X3372 found under Bearing Roller Tapered by Marysville Marine Distributors Inc. The National Stock Number assigned to this part is 3110001519553, 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 X3372.