Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CA25B A221-600E found under Switch Rotary by Kraus And Naimer Inc. The National Stock Number assigned to this part is 5930123701675, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CA25B A221-600E.