Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 595A OPT 5803 5810 101 found under Counter Electronic Digital Reado by Phase Matrixinc. The National Stock Number assigned to this part is 6625015271699, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 595A OPT 5803 5810 101.