Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 200-109 found under Switch Rotary by L 3 Communications Microdyne. The National Stock Number assigned to this part is 5930011345169, 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 200-109.