The role of tap guiding teeth in the process of tooth tapping:

The front end of the tap tooth is artificially cut off during the production process, forming a diagonal cutting area. Normally, there are 4 teeth, 2.5 teeth, or 1.5 teeth. What is the role of this area in the tooth tapping process?

1. The cutting function is mainly achieved by tapping the thread on this part of the tap

2. The lead function is to check the verticality of the tap and the aperture, guiding the tap to smoothly enter the tapping tooth inside the hole

The guide tooth of the tap plays a significant role in the process of tapping, and the lifespan of the tap is poor if there are no inverted teeth. The more inverted teeth there are, the longer the lifespan of the tap;

A tap without guide teeth not only has a poor lifespan, but also when tapping, due to the large front end of the tap, it will directly crush the entrance of the tapping tooth, resulting in a lack of stop gauges.