Description Of A Self-tapping Screw

Self-tapping screws have a pair of vertical cutting blades at their head part. These blades are actually responsible for drilling the hole and this way the need for a drilling machine becomes zero. Their uses are highly felt in hard objects like wood, stone and brick where it is very difficult to make holes using a normal drilling machine probably it involves too much time and efforts – check https://www.tappex.co.uk/. In these cases using a self-tapping screw would be ideal.