Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 508088-1021 REV D found under Circuit Card Assemb by Diamond Power International Inc. The National Stock Number assigned to this part is 5998003754259, 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 508088-1021 REV D.