Overview

• Bottoming chamfers have 1 to 2 threads
• Plug chamfers have 3 to 5 threads
• Taper chamfers have 7 to 10 threads and are typically used as a starter tap
• They all can be used for threading blind holes.Chrome is a corrosion resistant coating applied to a tool in a thin or heavy layer
• It is commonly used on steel, aluminum, brass, copper or other non-chromium materials.High Speed Steel (HSS) provides good wear-resistance and can be used in general purpose applications for both ferrous and non-ferrous materials.