screw - dowel, cаморез + дюбель

grabcad

A screw dowel, also known as a self-drilling screw or a thread cutting screw, is a versatile fastener that combines the functions of drilling and fastening in one tool. It can be used for various applications such as woodworking, metalwork, and construction projects. The screw dowel works by drilling its own hole while also cutting threads into the material, creating a strong and secure connection without the need for additional tools or equipment.