Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 405731 found under Bearing Sleeve by Eaton Aerospace Ltd. The National Stock Number assigned to this part is 3120012479429, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 405731.