OSG - M1.7x0.35 Metric Coarse 2 Flute 6H Semi-Bottoming Spiral Flute Tap - Powdered Metal, V Finish, 40mm OAL, Right Hand Flute, Right Hand Thread, D3, Series 16500

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

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

V is a multi-layered TiCN coating that is harder and has greater wear resistance than TiN. It is used for applications in cast iron, steel, stainless steel, nickel alloys and aluminum. V is a proprietary coating exclusive to OSG Tap and Die, Inc.