4.3mm Countersink 90° High-Speed Steel 3‑Flute EUC Special Coating, Right‑Hand - MAPAL Dr. Kress SE & Co. KG

Take advantage of the combination of HSS special coating, EUC 3‑flute geometry and a precision 90° countersink for reduced feed forces and reliable surface quality; order the countersink directly via Metav Werkzeuge or contact our consultants for application advice.

Countersink EUC DIN 335 C, 90° – 4.3 mm, HSS special, cylindrical shank (BECK)

The Countersink EUC DIN 335 C, 90° is a precision countersinking tool designed for high‑performance deburring and chamfering in industrial production.

• HSS special coating for extended tool life
• 90° precision countersink geometry
• Reduces axial force by approx. 50%
• Suitable for steel, cast iron, non‑ferrous metals

High cutting performance with measurable benefits

The precision countersink is manufactured in HSS with a special coating and a refined cutting geometry that complies with DIN 335 C. The tool’s 3‑flute EUC configuration and prepared cutting edges deliver a more stable cutting action, which leads to a 50% reduction in axial force and around 25% lower radial force compared with conventional designs. This decrease in forces translates directly into reduced feed effort, less spindle load and a lower tendency to chatter, supporting a more consistent production flow and fewer rejects.

Improved surface finish and process reliability

Radial regrinding and the optimised cutting edge preparation contribute to consistently clean chamfers and countersinks. The cylindrical shank and precision execution allow straightforward clamping in common toolholders, while the refined geometry ensures reliable chip evacuation and minimal burring. In steels, the recommended feed under a tool load up to 500 N is 0.06 mm/rev, offering a practical starting point for setting process parameters. These characteristics mean fewer reworks and a steadier cycle time in serial production.

Easy integration into existing machining centres

Conformity to DIN 335 C and the right‑hand cutting arrangement ensure compatibility with standard machining setups. The highly unequal flute spacing (EUC) reduces harmonic excitation and promotes an even cutting load across the tool life. For production planners this implies easier parameter transfer between machines and faster ramp‑up when introducing the tool into a new workstation. The tool’s precision design supports efficient automation where repeatability and surface quality are important.

Broad material suitability and operator guidance

The countersink is suitable for machining steel, cast iron and non‑ferrous metals, making it a versatile option across workshop and manufacturing environments. The combination of the special coating and the EUC geometry helps when working with mixed batches of materials, since the tool maintains stability and reduces the risk of tool chatter. Operators should use the specified feed recommendation as a baseline and adapt depending on machine rigidity and clamping conditions to achieve the best surface finish.

Contact Metav Werkzeuge for tailored application advice or to secure this EUC countersink directly; Metav Werkzeuge is available by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical Data

• Article number / SKU: 4000806032NW
• Product name: Countersink EUC DIN 335 C 90° 4.3 mm HSS special
• Packaging unit: 1
• UID: 4000806032NW

Facts

• Diameter: 4.3 mm
• Countersink angle: 90°
• Cutting edges: 3
• Feed in steel (up to 500 N): 0.06 mm/rev
• Standard: DIN 335 C

Special features

• HSS material
• Special coating
• EUC — extremely unequal flute spacing
• Radially ground, precision execution
• Right‑hand cutting
• Cylindrical shank
• Reduced axial force (~50%)
• Reduced radial force (~25%)
• Suitable for steel, cast iron, non‑ferrous metals

FAQ

What materials can this countersink handle?
The Countersink EUC DIN 335 C 90° is intended for steel, cast iron and non‑ferrous metals and performs reliably across these materials due to its HSS construction and special coating.

How does the EUC geometry improve performance?
The EUC (extremely unequal flute spacing) of this countersink evens out cutting loads, reduces the tendency to chatter and contributes to the stated reductions in axial and radial forces.

What feed should be used as a starting point in steel?
For the BECK countersink (SKU 4000806032NW) the guideline is 0.06 mm/rev at a tool load up to 500 N; adjust feed according to machine rigidity and workholding.

Is the tool compatible with standard holders?
Yes, the cylindrical shank and DIN 335 C form make the tool compatible with common toolholders used in general workshop and production machines.

How does the design affect tool life and surface quality?
Prepared cutting edges, the special coating and the EUC spacing combine to lower cutting forces and vibration, which improves surface quality and typically extends effective tool life.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com