Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EXC-4000PCI HC-A1F1 found under Circuit Card Assemb by Excalibur Systems Inc. The National Stock Number assigned to this part is 5999015596218, and the Federal Supply Class is 5999 Miscellaneous Electrical And Electronic Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like EXC-4000PCI HC-A1F1.