Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A31U29231-5 found under Microcircuit Digital by National Hybrid Inc. The National Stock Number assigned to this part is 5962013975577, and the Federal Supply Class is 5962 Microcircuits Electronic. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A31U29231-5.