Step Drill Bit Bosch HSS 3-Flat Shank Set for Aluminium Plastic

The Bosch HSS Step Drill Bit Set (3-flat shank) enables smooth drilling of multiple diameters with a single bit. Made from high-speed steel (HSS), the set is designed for durable performance when used with coolant. Laser-marked diameter figures in the spiral flutes provide clear, long-lasting visibility of hole sizes. The three-piece set is suitable for a range of light metal and plastic drilling tasks and features a 3-flat shank for a secure grip in chucks and bit holders.

Advantages

The HSS construction offers wear resistance and reliable cutting performance on softer metals and plastics. Laser-marked step sizes make it easy to select the required hole diameter. The 3-flat shank improves grip and reduces slipping in drill chucks. Using coolant extends tool life and helps maintain consistent drilling quality.

Suitable for

• Aluminium sheets and profiles
• Non-ferrous metals (e.g., brass, copper)
• Pipes and thin-walled metal components
• Plastic materials

Key specifications

• Brand: Bosch
• Material: High-speed steel (HSS)
• Shank type: 3-flat shank
• Set size: 3 pieces
• MPN: 2608587426
• EAN: 3165140630207

How to use

Select the step corresponding to the required hole diameter, mount the step drill bit securely in the drill chuck ensuring the 3-flat shank is seated to prevent slipping. Start drilling at low speed to establish the hole, then apply steady pressure and appropriate feed. Use coolant when drilling metals to reduce heat and prolong tool life. Retract occasionally to clear chips and ensure a clean hole.

Recommendations

For best results on aluminium and non-ferrous metals, use moderate drill speed and cutting fluid. Avoid excessive pressure to prevent tool wear and maintain clean, accurate holes. Inspect laser markings before use to choose the correct step.