Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MAG5664-122 found under Bearing Unit Ball by Speco Corp. The National Stock Number assigned to this part is 3130000731656, and the Federal Supply Class is 3130 Bearings Mounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MAG5664-122.