- spotfacing
- цекование
Англо-русский словарь по машиностроению. Академик.ру. 2011.
Англо-русский словарь по машиностроению. Академик.ру. 2011.
Countersink — A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common usage is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the… … Wikipedia