Patent ID: 8813617

Claim:
A cutting insert ( 14 ) having a longitudinal insert axis (A) and comprising a cutting head ( 30 ) and an insert shank ( 32 ) extending rearwardly from the cutting head ( 30 ); the cutting head ( 30 ) comprising a cutting edge ( 34 ) formed at an intersection of a rake surface ( 36 ) and a relief surface ( 38 ); the insert shank ( 32 ) comprising an insert clamping portion ( 40 ) extending along the insert axis (A) and having a peripheral surface ( 46 ) surrounding the insert axis (A), the insert axis (A) being located in a first dividing plane (P 1 ) of the insert clamping portion ( 40 ), the insert clamping portion ( 40 ) being rotationally asymmetric about insert axis A and any axis parallel thereto; wherein: on one side of the first dividing plane (P 1 ), the peripheral surface ( 46 ) comprises first and second longitudinally extending depressions ( 48 , 50 ); and on the other side of the first dividing plane (P 1 ), the peripheral surface ( 46 ) comprises first and second abutment surfaces ( 54 , 56 ) separated by a third depression ( 52 ), the first and second depressions ( 48 , 50 ) being separated by a third abutment surface ( 58 ).