The types of lead screws based on their thread geometry are square threads, acme threads, trapezoidal threads, and buttress threads. Lead screws may be manufactured by a thread rolling or perhaps a thread whirling procedure. The minimal diameter will be the smallest diameter from the thread. For that screw shaft, https://types-of-house-foundation64950.answerblogs.com/29566927/top-guidelines-of-types-of-screw-head-drives