Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CTK-04-NR-200914 found under by De La Rue Currency. The National Stock Number assigned to this part is 5845013448502, and the Federal Supply Class is 5845 Underwater Sound Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CTK-04-NR-200914.