Bosch Hex Shank HSS Step Drill Bit

The Bosch Hex Shank HSS Step Drill Bit is a cone and stepped drill bit designed for smooth, burr-free drilling in several diameters with a single bit. It is ideal for drilling round holes, enlarging existing holes and deburring.

The split-point tip allows an easy start, so pre-punching is not necessary. The CNC ground spiral flute gives optimised chip removal and less vibration for even drilling, while axial and radial relief grinding delivers high cutting performance and smoothness.

This step drill bit is suitable for thin materials, including non-ferrous metals, sheet plastic, sheet steel, plastic and stainless steel. It is made from HSS (high-speed steel) and offers a long lifetime when used with coolant. Laser-marked figures in both spiral flutes show the hole diameter clearly and durably. The hex shank fits three-jaw chucks and ¼" internal hex tool holders.

Features and Benefits:
• Drills smooth holes in several diameters with one drill bit
• Hex shank for a strong connection and maximum torque transmission in three-jaw chucks and ¼" internal hex tool holders
• CNC ground spiral flute for optimised chip removal and less vibration
• Axial and radial relief grinding for high cutting smoothness
• HSS construction for a long lifetime when used with coolant
• Laser-marked hole diameters for easy identification

Specifications:
Total length: 70.5 mm
Step height: 4.0
Shank diameter: 1/4 inch
Step diameter (range): 4-20 mm
Net weight: 0.077 kg