Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 666193-264 found under Switch Electrical by R And N Invesment Properties Lc. The National Stock Number assigned to this part is 5930011868181, 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 666193-264.