Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BY402877-107 found under Bearing Roller Self Aligning by Fmc Technologies Inc. The National Stock Number assigned to this part is 3110007880055, 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 BY402877-107.