Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 28 015 found under Extender Card Elect by Concurrent Computer Corporation. The National Stock Number assigned to this part is 5998010453281, 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 28 015.