Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TM7963-1 found under Knob Assembly by Marconi Electronics Inc. The National Stock Number assigned to this part is 5355007654590, 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 TM7963-1.