Machining Quiz: Think You Can Handle the Fabricator’s Shop?
What specific task does a countersink perform in machining?
Correct Incorrect A countersink is used to create a conical recess that allows a flat-head screw to sit flush with or below the surface, resulting in a clean finish. This is important where a protruding screw head would be undesirable or could interfere with the function of the assembled parts. Countersinking also helps distribute screw head pressure evenly, reducing the chance of material splitting.