Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 13-540-044 DETAIL 12 found under Ball Bearing by Mico Inc. The National Stock Number assigned to this part is 3110013949311, 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 13-540-044 DETAIL 12.