Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T940 3E503E50 3 found under Circuit Card Assembly by Astronics Advanced Electronic. The National Stock Number assigned to this part is 5998016628954, and the Federal Supply Class is 5998 Electrical And Electronic Assemblies Boards Cards And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like T940 3E503E50 3.