Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M41256HN-12 found under Microcircuit Memory by At And T Technologies Inc. The National Stock Number assigned to this part is 5962012661459, 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 M41256HN-12.