Three Flute Countersink 90°, DIN 335
Countersinking / Counterboring screw holes for Countersunk screws acc. to DIN 963, 964, 965, 966, 7513, 7516
For Countersunk screws acc. to ISO 2009, 2010, 7046-1, 7046-2, 7047
Chamfering of tapping holes
For use in