Hole Cutting Tools

Description

Step Drill Bits 
Self-starting step drill bits offer a unique tip design which eliminates not only skidding, but also the need for center punching. The spiral flutes of RUKO high-performance step drill bits are CBN-ground from the solid hardened form. Because CBN (cubical boron nitride) is a much harder abrasive than even silicon carbide or corundum, a better and sharper cutting edge is achieved without burrs. Because of this higher dimensional precision, the step drills will last considerably longer while maintaining precise process tolerances. Available in High Speed Steel and Titanium Nitride-coated (TiN-coated) High Speed Steel, the added titanium nitride coating increases the surface hardness to approximately 2300 HV and the heat resistance to 1100°F (600°C).

Specs

Step Drill Bits 
Self-starting step drill bits offer a unique tip design which eliminates not only skidding, but also the need for center punching. The spiral flutes of RUKO high-performance step drill bits are CBN-ground from the solid hardened form. Because CBN (cubical boron nitride) is a much harder abrasive than even silicon carbide or corundum, a better and sharper cutting edge is achieved without burrs. Because of this higher dimensional precision, the step drills will last considerably longer while maintaining precise process tolerances. Available in High Speed Steel and Titanium Nitride-coated (TiN-coated) High Speed Steel, the added titanium nitride coating increases the surface hardness to approximately 2300 HV and the heat resistance to 1100°F (600°C).
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