Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 546 1293 003 found under Knob by Rockwell Collins Inc. The National Stock Number assigned to this part is 5355008422219, 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 546 1293 003.