Drill plate with a clamping attachment in a base body

A drilling tool comprising:

• a drilling tool cutting insert, and a rotatably driven drilling tool base body, said base body having a mounting groove formed in an end thereof defined by a pair of clamping jaws, each of said jaws having a bore therethrough, one of said bores being threaded, said bores for receiving a mounting screw for clamping said cutting insert in said mounting groove, each of said jaws having a stop face and a centering face on said stop face at an acute angle to said stop face, said cutting insert comprising:
• a plate-shaped cutting element having a first end, a second opposite end, and a bore therethrough for receiving the mounting screw, said first end of said cutting element having a pair of mutually opposing cutting edges, said element having a chip face extending from each said cutting edge to said second end of said element and having a stop face and a centering fin with a centering face located between said chip face and said stop face, said centering face at an acute angle to said stop face, said cutting element centering faces adapted to engage with said centering faces on said jaws of said base body to center said cutting insert in said base body, said cutting element centering faces and the centering faces on the jaws of the base body being the sole means of centering said cutting insert in the base body.