RUKO STB-HSS-TiAlN-SP-Gr.12-6,0-32,0mm punta a gradino

This RUKO step drill bit stands out with its TiAlN coating and spiral flute design, enabling efficient drilling and deburring in a single operation. The 3-flat shank ensures secure grip in the chuck, while the 118° point angle provides precise centering. Suitable for steel, stainless steel, non-ferrous metals, plastics, and wood up to 4 mm thick.

Highlights

• TiAlN coating for high wear resistance and extended tool life
• Spiral flute for smooth chip evacuation and reduced cutting forces
• 3-flat shank prevents slippage in keyless chucks
• Two-flute design with 118° point angle for accurate starting

In daily use

Ideal for enlarging existing holes or creating new ones in sheet metal and profiles. The step increments of 2.0 mm allow gradual hole enlargement without pilot drilling, saving time on the job site. The TiAlN coating reduces friction and heat buildup, making it suitable for stainless steel applications.

Full specifications

• Tool Type: Step Drill Bit
• Material: High-Speed Steel (HSS)
• Coating: Titanium Aluminum Nitride (TiAlN)
• Drilling Diameter Range: 6.0 - 32.0 mm
• Number of Steps: 14
• Step Increments: 2.0 mm
• Shank Type: 3-Flat Shank
• Shank Diameter: 10 mm
• Overall Length: 105 mm
• Cutting Length: 75 mm
• Flute Type: Spiral Flute
• Point Angle: 118°
• Recommended Material Thickness: Up to 4 mm
• Suitable Materials: Steel, Stainless Steel, Non-ferrous metals, Plastics, Wood
• Application: Drilling, Deburring, Chamfering
• Standard: DIN 1412 C (Point Geometry)

Final note

RUKO precision tools are known for their quality and durability, making this step drill bit a reliable choice for professionals and demanding DIY users.