There are more than 4,300 years between the invention of a threaded screw and the modern industrial threaded screw as it is known nowadays. That's a long period of time since the threaded screw is something the majority of the world doesn't spend much time thinking about. Every time you turn a screwdriver in the process of making something, you can thank thousands of years of innovation. And the next time you use an object (car, washer, TV…), whether screws were used to manufacture the ...This story is related to the following:Mechanical Power TransmissionActuator Screws | Electrical Actuators |