Patent ID: 8021084

Claim:
A cutting insert comprising: an insert forward surface, an opposing insert rear surface and an insert peripheral surface extending therebetween, the insert peripheral surface comprising two opposing insert side surfaces that extend between an insert upper surface and an opposing insert lower surface, the insert upper surface and the insert lower surface forming insert end surfaces, a through bore having a bore axis and extending between the insert forward and rear surfaces, a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface; the insert rear surface comprising: a first portion located between the through bore and the insert lower surface, the first portion comprising an insert engaging element that extends in a direction between the insert end surfaces and comprises two spaced apart first insert rear abutment surfaces, and a second portion located between the through bore and the insert upper surface, the second portion comprising a second insert rear abutment surface; the insert lower surface comprising: an insert lower central portion adjacent the insert engaging element, and a pair of insert lower flanks extending from the insert lower central portion to the insert side surfaces, each of the insert lower flanks being provided with an insert lower abutment surface.