1. conical recesses cut into material to allow screw heads to sit flush with or below the surface
2. drill bits designed to create conical holes for screw heads

1. creates a conical recess in material so that a screw head sits flush with or below the surface

Examples

• The carpenter drilled countersinks for all the screws in the cabinet door.
• She bought a set of countersinks in different sizes for her woodworking project.
• The instructions specify to use countersinks to hide the screw heads.
• He countersinks every screw hole to create a smooth finish.
• The furniture maker countersinks the screws so they don’t catch on clothing.
• These countersinks will help you achieve a professional-looking result.
• Make sure you countersink the holes before inserting the screws.