Conical insert with internal thread, drill and hammer

摘要

A larger diameter part protrudes outwards at one side from the outermost end of the conical part (101). The conical part has a flat surface at right angles to the axial direction of the conical part. A fitting part extending in the axial direction of the conical part has an internal tread (104) cut into the conical insert (1). The inner thread is cut into an inner wall surface of a blind hole bored into the conical part. A groove part is positioned on the larger diameter side on the end of the conical part.