A screw machine operator is a type of machinist who uses an automatic lathe to build specialty and custom-ordered parts or tools. As a screw machine operator, you install stops, gears, and cams and adjust them to produce parts to client specifications. Your responsibilities include the operation and monitoring of the turning machine and other machinery as each part is made and testing each piece against the blueprints. Screw machine operators need a high school degree or a GED certificate. Skills and qualifications that help in a screw machine operator career include mechanical experience and mathematical abilities. You need to be able to read blueprints accurately and properly service and maintain your equipment.