Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 258 0007 040 found under Microcircuit Memory by Rockwell Collins Inc. The National Stock Number assigned to this part is 5962012965441, 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 258 0007 040.