The standard specifies the dimensions, designation, material, execution, measurement of dimension m and marking of triangular and square hardmetal indexable inserts with rounded corners, without fixing hole, tolerance class G and U without and M with chip breaker. These inserts are mainly used for turning.
DIN 4968:1987 history
1987DIN 4968:1987 Indexable hardmetal inserts with rounded corners, without fixation hole