The Cylindrical Head Allen Special Screw joins or fasten objects together by creating a secure connection between materials. This is achieved by rotating the screw into a threaded hole or nut, where the threads engage with the material, providing stability and strength.Attributes:• Requires rotational force.• Helical ridge along the length for gripping.• Head design allows turning with a tool. Applications: The Cylindrical Head Allen Special Screw is a fastener for creating strong and reliable connections between materials used in the engine components, turbocharger, and a sensor for a broad range of tasks.