Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 255140-103 found under Circuit Card Assembly by Rockwell Collins Simulation. The National Stock Number assigned to this part is 5998015899219, 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 255140-103.