Countersink
Russian Meaning
зенковка зенкер конический зенкер циковка зенковать
English Meaning
- A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.
- A tool for making such a hole.
- To make a countersink on or in.
- To drive (a screw or bolt) into a countersink.