Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C18 A021-400KD1 F2FP743XBR found under Switch Rotary by Kraus And Naimer Inc. The National Stock Number assigned to this part is 5930011607042, 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 C18 A021-400KD1 F2FP743XBR.