OSG - M45x4.50 Metric 6H D15 Thread Limit Semi-Bottoming Thread Forming Tap - High Speed Steel, V Finish, 220mm OAL, 88mm Thread Length, Series 16150

Semi-bottoming chamfers are used for blind holes. They have 3 to 3-1/2 threads.

V is a multi-layer TiCN coating, It is commonly used on carbon, mild steels, aluminum castings and cast iron. V is a proprietary coating exclusive to OSG Tap and Die, Inc.

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