The set screw is used for the relative position of the fixed part.

The set screw is used for the relative position of the fixed part. The head has a type of slotted, hexagonal and square head. The square head can apply a large tightening torque, the top tightening force is large, and it is not easy to be bald, but the head size is large, it is inconvenient to be buried in the part, and it is unsafe, especially the moving part is not suitable for use. The inner hexagon with a slotted groove makes it easy to sink into the part. The end of the set screw is usually the most commonly used, including the tapered end, the flat end and the cylindrical end. The tapered end is suitable for parts with low hardness; when using the tipless end screw, the hole is pressed on the top surface of the part, and the cone is pressed against the hole.