205B 4 Flute Taper Shank Core Drills

Morse Taper Shank ISO Length                        M2 High Speed Steel                        BS328/1 DIN343RN
30° relieved chamfer nose                                 h8 diameter tolerance                       Right hand cutting
Normally supplied in steam temper (‘blue’) finish.

For opening out drilled, cored, or punched holes. Core drills are very rigid and robust tools for producing
accurately sizes, very round, well aligned holes, to a higher standard of surface finish than is attained with a
two-fluted drill. Core drills will not drill from the solid.

It is possible to provide any of the sizes listed as standard 3-flute core drills on the previous pages, in 4-flute design.
However, the sizes below are normally held in stock in 4-flute. They are concentrated in the larger diameters.