6-26.75mm Step Drill HSS Spiral Flute 2-Cutter 118° Point 90° Step Angle - Ruko GmbH

Take advantage of the durable HSS construction and the spiral flute design to achieve fast, consistent step drilling across a wide diameter range; the split point and 2 cutting edges deliver precise starts and reduced walking — available through Metav Werkzeuge for straightforward supply or technical advice.

RUKO Step Drill 6–26.75 mm — HSS, Spiral Flute, 8 Steps

The RUKO step drill is a high-performance HSS stepped twist drill designed for progressive hole enlargement and quick stepwise drilling in thin materials and sheet work.

• HSS construction for long tool life
• Spiral flute for efficient chip evacuation
• 2 cutting edges with 118° point angle
• Shank with 3 flats for secure clamping

Faster, cleaner holes with fewer tool changes

The stepped geometry enables multiple diameters in a single tool, reducing cycle time by avoiding repeated tool changes. The 6–26.75 mm diameter range across 8 steps provides a compact solution for progressive hole sizing, while the 90° step angle ensures defined transitions between diameters. The combination of stepped design and spiral flute promotes continuous chip flow, which lowers heat build-up and preserves edge life. For workshops aiming to improve throughput, this tool reduces handling and increases consistency in serial operations.

Reliable centring and controlled entry for accurate drilling

A 118° point angle with cross grind (split point) improves initial centring and reduces walking on smooth surfaces, so holes start more accurately and require less pilot work. The 2 cutting edges distribute cutting forces evenly, providing smoother penetration and predictable torque. The shank with 3 flats offers secure clamping in chucks or collets, minimising slippage during higher feed rates. Together these features support repeatable hole quality and lower scrap rates in production and repair tasks.

Durable HSS composition for industrial use

The HSS material balances toughness and wear resistance, making the tool resilient under typical workshop conditions and suitable for frequent use. The spiral flute geometry, combined with the split point, assists with chip evacuation and reduces the risk of clogging during interrupted cuts. Maintenance is straightforward: resharpening can restore geometry where applicable, and the robust construction supports reliable performance over many cycles, which helps to keep downtime and tooling costs predictable.

Practical benefits that streamline workshop work

Using a multi-step drill simplifies inventory and tool management: fewer tools are needed to cover a range of hole sizes, which lowers setup times and storage complexity. The clear step transitions and secure clamping enable quick alignment and repeatable results across batches, supporting both ad hoc repairs and scheduled production runs. The tool’s specification focuses on functional performance—spiral flute, split point, 2 cutting edges—to deliver measurable improvements in drilling speed and hole consistency.

For robust step drilling with RUKO’s proven HSS design, contact Metav Werkzeuge for tailored ordering and swift delivery from Emmerich — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 4000601711NW
• Label: Stufenbohrer Bohrber.6-26,75mm HSS Spiralnut Z.2 Stufen 8 RUKO
• Manufacturer: Ruko GmbH

Facts

• Diameter range: 6–26.75 mm
• Steps: 8
• Point angle: 118°
• Step angle: 90°
• Cutting edges: 2
• Shank: 3 flats

Special features

• HSS material
• Spiral flute
• Cross grind / split point
• Stepped twist drill design
• Brand: RUKO

FAQ

What diameter range does the step drill cover?
The tool covers a diameter range of 6–26.75 mm across 8 steps, enabling multiple hole sizes with a single cutter.

What advantages does the split point offer?
The 118° split point improves centring and reduces walking at the drill entry, resulting in quicker starts and more accurate holes with the RUKO step drill (SKU 4000601711NW).

How does the spiral flute affect performance?
The spiral flute promotes continuous chip evacuation, which reduces heat and helps maintain cutting efficiency and edge life during progressive drilling.

Is the shank suitable for secure clamping?
Yes; the shank features 3 flats for reliable clamping in chucks or collets, minimising slippage during higher feed operations.

Can this tool replace multiple conventional drills in a workshop?
The stepped design is intended to reduce the number of separate drills required for a range of hole sizes, simplifying tool management and lowering setup times.

Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen