Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 509-0005 found under Switch Push by Ddc Pertec Peripherals Corp. The National Stock Number assigned to this part is 5930010476105, 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 509-0005.