Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 666230-745 found under Knob by R And N Invesment Properties Lc. The National Stock Number assigned to this part is 5355013308109, and the Federal Supply Class is 5355 Knobs And Pointers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 666230-745.