Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C42 A213-600 EFS1 F990 A1B -PRL found under Switch Rotary by Kraus And Naimer Inc. The National Stock Number assigned to this part is 5930016471259, 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 C42 A213-600 EFS1 F990 A1B -PRL.