Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 590UN01D50AS found under Switch Toggle by Zodiac Aero Electric. The National Stock Number assigned to this part is 5930144640974, 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 590UN01D50AS.