A PCD countersinking insert. This eliminates the need for expensive custom solution step drills, reducing manufacturing costs while meeting the industry’s accuracy requirements. — The two series of ...

Step drill: Two or more diameters may be ground on a twist drill ... Counterboring produces a larger step in a hole to allow a bolt head to be seated below the part surface. Countersinking: ...

and countersinking for #4, #6, #8, #10, or #12 screws. These countersinks are designed to drill the pilot hole and countersink or counter-bore for screws in one step. This allows you to ...

Since [Timo] uses a small laser cutter to cut out and mark project boards for their electronics builds, having an extra messy, manual countersinking operation with subsequent clean-up seemed like ...