What is a Screw Conveyor Screw? > Screw Conveyor Parts- conveyor design screw ,The screw is only one part that makes up a properly design screw conveyor. All the parts of a screw conveyor work together to safely and efficiently convey the material, but nothing is more important than the screw.Screw conveyor - WikipediaA screw conveyor or auger conveyor is a mechanism that uses a rotating helical screw blade, called a "flighting", usually within a tube, to move liquid or granular materials. They are used in many bulk handling industries.