The flank angle of a screw thread is the angle formed between the flank of the thread and a line perpendicular to the thread’s axis. This angle is crucial because it defines the thread’s profile and shape, influencing how the thread meshes with its counterpart. The flank angle affects several aspects of thread performance, including how forces are distributed along the thread, which impacts its strength and load-carrying capacity. It also plays a role in ensuring proper fit and engagement between threads, which helps prevent issues like binding or cross-threading. Additionally, the precise flank angle is important for maintaining the durability and integrity of the threads under load, contributing to the longevity of the threaded components. Adhering to specified flank angles, as outlined in various thread standards, ensures that threads function as intended and fit together correctly.
