Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ZK9-A found under Synchro Control Tra by Cd Technologies. The National Stock Number assigned to this part is 5990012578299, and the Federal Supply Class is 5990 Synchros And Resolvers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ZK9-A.