The phrase "single screw" refers to something that is held together or operated by only one screw, rather than multiple screws or fasteners. It means there is only one attachment point or mechanism keeping things in place or working. Full definition
Our fleet of six boats (ranges from 48 feet single screw to 65 feet double deck snorkel boat) will expose you to all the dynamics and variations this business has to offer. (donfosters.com)
Responsible for training plastic extrusion operators across three shifts on single screw extruders as well as twin screw extruders and gravimetric mixers and conveying equipment related to the process. (jobhero.com)
Although the product, patented in 1936, quickly became the standard for a variety of industrial and consumer uses, its inventor, Henry Phillips, never manufactured a single screw. (inc.com)