# CDSL Bridge: Counterbored Hole

- A counterbore is a smaller functional hole plus a larger, shallow coaxial recess.
- Use `hole_counterbore` or `hole_wizard` with `counterbore` fields when host placement is resolvable.
- Preserve main diameter, depth, counterbore diameter, and counterbore depth separately.
- Do not use a plain blind hole when the screw-head seat is part of the request.