Patent ID: 8033764

Claim:
An indexable insert, comprising: a body including a front polygonal surface, a back polygonal surface and a plurality of side edge surfaces joining the front polygonal surface and the back polygonal surface, the intersections of the side edge surfaces and the polygonal surfaces defining line edges of the insert and intersections of sequential side edge surfaces defining corner edges of the insert; and a receiver for a region of a head of a locking screw in the front polygonal surface, wherein the receiver includes a plurality of recesses, each recess having a surface that is complimentary to the region of the head of the locking screw, wherein the plurality of recesses are collocated in a contiguous structure in a radial center of the indexable insert, wherein the recess of the receiver that is contacted by the region of the head of the locking screw is the recess that is farthest from a material-removing feature of the indexable insert, and wherein the surface of the recess has a convexity corresponding to a concavity of the region of the head of the locking screw.