
G r ade 1 1 Grade Inse r t 2 2 Insert E x te r nal Toolholde r 3 Inte r nal Toolholde r 4 Ext. Toolholder T hre ading Tool 5 3 Pa r ting, G rooving 6 Int. Toolholder Endmill 7 4 5 Threading D rilling Tool 8 Te chnical Refe re nce 9 6 Grooving 7 Endmill 8 Drilling Tool Technical Reference 9