Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C03-007838 found under Extender Card Elect by Sonicraft Inc. The National Stock Number assigned to this part is 5998013020630, 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 C03-007838.