Vermont Tap & Die - M3.5x0.60 Metric, 4 Flute, Bottoming, Plug & Taper, Bright Finish, High Speed Steel Tap Set - Right Hand Cut, 2" OAL, 11/16" Thread Length, 6H Class of Fit, Series 3105M

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.

High Speed Steel (HSS) provides good wear-resistance and can be used in general purpose applications for both ferrous and non-ferrous materials.

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