Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K11859 found under Bearing Roller Tapered by Nacco Materials Handling Group Inc. The National Stock Number assigned to this part is 3110001004243, 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 K11859.