Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JK-46991 found under Ring Bearing Outer by Koyo Bearings Usa Llc. The National Stock Number assigned to this part is 3110005576754, 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 JK-46991.