Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TT207-A2B1 found under Knob by Korry Electronics Co. The National Stock Number assigned to this part is 5355014481612, 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 TT207-A2B1.