• HSS-TiAlN step drill, designed for fast drilling of progressive-diameter cylindrical holes without changing tools. It is the ideal solution for machining thin materials such as sheet metal, tubes and profiles, where precision and speed make the difference.
• Each section of the drill is a step that progressively enlarges the hole. This allows the diameter to be increased step by step using a single tool mounted in the drill, avoiding frequent bit changes and significantly reducing machining time. The next step also refines the previously drilled hole, removing burrs.
• In many applications, it allows drilling and countersinking in a single operation, further speeding up the process and ensuring a clean, professional result.

FEATURES

• Manufactured from high-performance HSS with a TiAlN coating, it offers high surface hardness, improved sliding properties and long service life, even when working with demanding materials, including steel and stainless steel.
• For use on metal sheets up to 6 mm thick.

Step diameters for the different product variants:

4–12mm (9 steps): 4, 5, 6, 7, 8, 9, 10, 11, 12mm

4–20mm (9 steps): 4, 6, 8, 10, 12, 14, 16, 18, 20mm

4–32mm (15 steps): 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm
6–30mm (13 steps): 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30mm

6–38mm (12 steps): 6, 9, 13, 16, 19, 21, 23, 26, 29, 32, 35, 38mm
10–45mm (8 steps): 10, 15, 20, 25, 30, 35, 40, 45mm

The step height is always 6 mm.