Value Collection - #4-40 UNC H3 Thread Limit Bottoming Thread Forming Tap - Vanadium High Speed Steel, Bright Finish, Right Hand Thread

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

Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.

Vanadium High Speed Steel (HSSE) is made of high speed steel, carbon, vanadium carbide and other alloys to increase abrasive wear resistance and toughness. It is commonly used in general applications on stainless steels and high silicon aluminums.