Hand ground flats on the shank of tools is a common occurrence we run into. Hand ground flats are not recommended by the manufacturer and it can cause poor runout, inconsistent performance and can even cause tool breakage. It also voids any manufacturer warranty.

We offer Industry standard Weldon Flats and #1 Style Flats as add-on for end mills. We can ship them in as little as 2 days. Straight from the manufacturer at a minimal cost. Tangs are also available to add-on for our drills.