Counterbores WK DIN-373 HSS Execution N F M LMeatderial groups in tapping in exact in medium HLoealedtype holes clearance clearance hole hole Internal cooling Quality of material HCoolaetitnygpe Material type HSS HSS HSS Nakrój / Chamfer Norm DIN-373 D d1 d l l1 l2 L M Tol.z9e8h9INDEXT1-044010 6 6,0 2,5 5,0 14 3,0 31,5 71 M3 6025 6,5 2,9 5,0 14 3,5 31,5 71 M3,5 6529 8,0 3,3 5,0 14 4,0 31,5 71 M4 8033 10,0 4,2 8,0 18 5,0 35,5 80 M5 1042 11,0 5,0 8,0 18 6,0 35,5 80 M6 1150 15,0 6,8 12,5 22 8,0 40,0 100 M8 1568 18,0 8,5 12,5 22 10,0 40,0 100 M10 1885 20,0 10,2 12,5 22 12,0 40,0 100 M12 2010 Norm DIN-373 D d1 d l l1 l2 L M Tol. z9 e8 h9 INDEX T1-045010 6,0 3,2 5,0 14 3,0 31,5 71 M3 6032 6,5 3,7 5,0 14 3,5 31,5 71 M3,5 6537 8,0 4,3 5,0 14 4,0 31,5 71 M4 8043 10,0 5,3 8,0 18 5,0 35,5 80 M5 1053 11,0 6,4 8,0 18 6,0 35,5 80 M6 1164 15,0 8,4 12,5 22 8,0 40,0 100 M8 1584 18,0 10,5 12,5 22 10,0 40,0 100 M10 1810 20,0 13,0 12,5 22 12,0 40,0 100 M12 2013 Norm DIN-373 D d1 d l l1 l2 L M Tol. z9 e8 h9 INDEX T1-046010 6,0 3,4 5,0 14 3,0 31,5 71 M3 6034 6,5 3,9 5,0 14 3,5 31,5 71 M3,5 6539 8,0 4,5 5,0 14 4,0 31,5 71 M4 8045 10,0 5,5 8,0 18 5,0 35,5 80 M5 1055 11,0 6,6 8,0 18 6,0 35,5 80 M6 1166 15,0 9,0 12,5 22 8,0 40,0 100 M8 1590 18,0 11,0 12,5 22 10,0 40,0 100 M10 1811 20,0 14,0 12,5 22 12,0 40,0 100 M12 2014 Example of order 177 T1-045010-0600 Counterbore 6,0 DIN-373 HSS