Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8515705-400 found under Microcircuit Digital by Honeywell Aerospace. The National Stock Number assigned to this part is 5962013451521, 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 8515705-400.