Countersink Vs Counterbore- What's The Difference, And Which Is Better?

Countersinking and counterboring are two machining operations used in the manufacturing process. Countersinking is creating a tapered conical-shaped hole by drilling or reaming. This process creates an angle on the inner walls of the hole for improved fastener seating and increased load-bearing strength. On the other hand, counterboring is a machining operation where a cylindrical hole with one flat bottom surface is created in the material.