16.5mm Countersink 90° Solid Carbide 3-Flute Shank 10mm CBN-Ground - Ruko GmbH

Combine burr‑free countersinking with robust solid‑carbide construction and ultra‑sharp CBN‑ground flutes for consistent chamfers at low cutting speeds. Order the tool directly via Metav Werkzeuge or contact our consultants for application advice.

RUKO Cone Countersink DIN 335C 90° Ø16.5 mm, solid‑carbide, 3‑flute

The RUKO Cone Countersink DIN 335C 90° Ø16.5 mm is an uncoated, three‑flute solid‑carbide countersink designed for clean deburring, precise chamfering and reliable recessing in steel applications.

• CBN‑ground flutes for extremely sharp edges
• Burr‑free countersinking and clean chamfers
• Optimised for low cutting speeds in steel
• Solid‑carbide, uncoated shank Ø10 mm

Cleaner chamfers and less rework through precision cutting

The tool’s CBN‑ground flutes ensure the cutting edges are exceptionally sharp, which directly reduces burr formation and the need for secondary finishing. With a 90° tip angle and a diameter of Ø16.5 mm, the design produces consistent chamfers and countersinks that meet dimensional requirements while lowering rework rates. The combination of sharp geometry and stable flute form improves surface quality and reduces the risk of chatter during entry and exit operations.

Practical machining guidance for consistent results

For efficient results in steel, follow the documented machining parameters: the countersink achieves its best finish at lower cutting speeds, with a recommended feed of 0.14 mm/rev in steel up to 500 N. The three‑flute geometry balances material removal with a steady cutting action, and the Ø10 mm shank allows secure clamping in standard toolholders. These numeric guidelines assist process planners in setting up stable cycles and predictable tool life, supporting throughput and part quality.

Robust construction and application focus

Made from solid carbide (HM) and supplied uncoated (blank), the countersink offers good wear resistance and dimensional stability across repetitive operations. The tool is engineered specifically for burr‑free countersinking, deburring and recessing, delivering the best results where controlled cutting and minimal radial forces are required. Its construction is especially suited to operations where low cutting speed and high edge quality are priorities.

Integrating the tool into workshop workflows

The compact design and standard shank diameter enable straightforward integration into existing setups, reducing changeover time and simplifying inventory management. Consistent edge sharpness from the CBN grinding process reduces variability between batches, while the tool’s geometry supports operator confidence in first‑pass acceptability. Metav’s supply and technical consultancy provide a reliable procurement route and process support for smooth introduction into production.

For technical specification support or fast supply of the RUKO solid‑carbide countersink, contact Metav Werkzeuge in Emmerich at info@metav-werkzeuge.com or call +49 2822 7131930 for personalised advice and ordering assistance

Technical data

• Article number: 4000601477NW
• Label: Cone countersink DIN 335C 90° Ø16.5 mm, solid‑carbide, uncoated, 3‑flute, shank Ø10 mm, RUKO
• Manufacturer: Ruko GmbH
• Packaging unit: 1
• UID: 4000601477NW

Core specifications

• Tip angle: 90°
• Diameter: Ø16.5 mm
• Shank diameter: 10 mm
• Flutes: 3
• Recommended feed in steel up to 500 N: 0.14 mm/rev

Special features

• CBN‑deep‑ground flutes
• Solid carbide (HM)
• Uncoated (blank)
• DIN 335C standard
• For burr‑free countersinking, deburring and recessing
• Optimised for low cutting speeds

FAQ

What materials is this countersink intended for?
The RUKO cone countersink is optimised for steel operations, with the best surface finish achieved at lower cutting speeds; the technical data notes feed guidance for steel up to 500 N.

What is the recommended feed rate for reliable results?
A feed of approximately 0.14 mm/rev in steel (up to 500 N) is provided as a practical starting point to achieve burr‑free chamfers with the RUKO countersink (SKU 4000601477NW).

Is the tool coated?
The tool is supplied uncoated (blank) and made from solid carbide (HM), which supports precision cutting and predictable wear behaviour in the specified machining regime.

Which shank size is required for mounting?
The countersink has a 10 mm shank, compatible with common collet and chuck systems designed for metric shank diameters.

Which standard does the geometry comply with?
The tool is manufactured to DIN 335C geometry with a 90° tip angle, suitable for standard countersinking and chamfering applications.

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