Kennametal - M7x1.00 Metric 3 Flute Plug Spiral Flute Tap - Powdered Metal, Nitride Finish, 69.2mm OAL, Left Hand Flute, Right Hand Thread, D5, Series T660

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

Nitride is a thin, hard-shell coating that supports surface hardness of the tool. It is commonly used where abrasive or wearing conditions exist.

Slow Spiral Flutes with 8-20 degree angles are used for tough materials like high nickel alloys, titanium and some series of stainless steels.