Guhring - M12x1.75 Metric 4 Flute 6HX Modified Bottoming Spiral Flute Tap - High Speed Steel, TiAlN Finish, 110mm OAL, Right Hand Flute, Right Hand Thread, D6/D7, Series 2920

Modified bottoming chamfers are similar to bottoming chamfers, but they are longer and have more teeth. They are used for threading blind holes and have 2 to 2-1/2 threads.

High Speed Steel (HSS) provides good wear resistance and can be used in general purpose applications for both ferrous and nonferrous materials.

Titanium Aluminum Nitride (TiAlN) has a higher hardness and oxidation temperature versus TiN and TiCN. As a result, it is particularly advantageous for higher speed operations in a variety of steel machining applications.