Thumbscrew

Thumbscrews are a type of screw that can be tightened or loosened by hand, without the need for any tools. They typically have a large, knurled head that allows for easy gripping and turning. Thumbscrews are commonly used in applications where frequent adjustments or quick assembly and disassembly are required, such as in electronics, machinery, and woodworking. They are often used to secure panels, covers, or other components that need to be easily removable. Thumbscrews are available in various sizes and materials, including plastic, steel, and brass, to suit different applications and environments.