Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SW28897 found under Bearing Roller Track Roller by 2Is Inc. The National Stock Number assigned to this part is 3110013249555, 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 SW28897.