How much do you know about trapezoidal screw?
Q: What is a trapezoidal screw? A: A trapezoidal screw is a sliding screw with a trapezoidal thread. Usually, a 30-degree trapezoidal screw means that the angle of the extended line of the thread section is 30 degrees. Trapezoidal screws are divided into left-handed and right-handed threads. The most commonly used in reality is the […]