Guhring - 5/16-18 UNC, 4 Flute, TiAlN Finish, Powdered Metal Spiral Point Tap - Plug Chamfer, Right Hand Thread, 90mm OAL, 3B Class of Fit, Series 2918

Plug chamfers are the most commonly used chamfer and are designed for efficiently threading through and blind holes. They have 3 to 5 threads.

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.

Powdered Metal (PM) is tougher and more cost effective than solid carbide. It is commonly used on highly abrasive materials including high silicon aluminums.