Screw Gears

         “Screw gears” typically refer to a type of helical gear, and they are also known as helical gears with a specific purpose. In a more general sense, “screw gears” may also refer to worm gears. Here’s an overview of both:

1. Helical Gears (Screw Gears)
2. Worm Gears (Screw Gears)