"Screw removal" is the process of re-cutting a screw that has already been completed using a tool such as a tap or a threading round die to remove rust or adjust distortion.
It is carried out when correcting the screws that the bolts were in during machine maintenance.
In internal thread , it is common to use the straight fluted tap number 3 ( chamfer 1.5).
* Please select the one that is suitable for the hardness of the workpiece material, the type of workpiece material, etc.