Emuge - #4-40 UNC 2BX Bottoming Thread Forming Tap

Bottoming chamfers are used for threading blind holes to the bottom. They have 1 to 2 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.