Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F58556 found under Cup Tapered Roller by Funk Mfg Co. The National Stock Number assigned to this part is 3110012696135, 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 F58556.