Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MPU15R3 found under by Wenesco. The National Stock Number assigned to this part is 5120015848441, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MPU15R3.