What are Counterbore and Countersink? | PCB Knowledge 

Counterbore holes are cylindrical with flat bottoms, while countersink holes are conical recesses designed to accommodate a screw or bolt. Both types serve to insert screws or fasteners, yet they offer distinct characteristics and applications. Watch this video to find more information.
Chapters:
Differences between design 00:52
Differences between manufacturing flexibility 02:00
Choosing between counterbore and countersink holes 02:58
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