Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X20-205-320 found under Switch Rotary by Bofors A B. The National Stock Number assigned to this part is 5930002740018, 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 X20-205-320.