Accupro - M4x0.70 Metric Coarse D6 Thread Limit Plug Thread Forming Tap - Powdered Metal High Speed Steel, TiN Finish, 2-1/8" OAL

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 Nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials. The heat and hardness resistance allows the tool to run at higher speeds than uncoated tools.

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