Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 28733-40031 found under Microcircuit Memory by Selex Es Ltd. The National Stock Number assigned to this part is 5962014366801, 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 28733-40031.