16.5mm Countersink 90° Three-Point HSS Special Coated 3-Flute Cylindrical Shank, Precision EUC Geometry - MAPAL Dr. Kress SE & Co. KG

Benefit from the combination of HSS construction and an optimised EUC geometry, which together reduce axial force by 50% and radial force by 25% for smoother countersinking; order the countersink directly via Metav Werkzeuge or request advice from our consultants.

MAPAL Countersink EUC DIN 335C 90° — HSS, Ø 16.5 mm

The MAPAL Countersink EUC DIN 335C 90° is a precision conical countersink designed for finishing and deburring holes in steel, cast iron and non‑ferrous metals with a cylindrical shank for secure clamping.

• HSS special coating
• 90° precision countersink
• Reduced axial force by 50%
• Optimised EUC geometry for smooth runs

High‑performance design for consistent results

The MAPAL countersink combines HSS base material with a special coating to deliver long tool life and reliable cutting under repeated use. The three cutting edges and precision ground flanks ensure concentricity and minimal vibration, which translates into improved hole quality and fewer secondary operations. For workshop planners, this means consistent cycle times and a lower scrap rate when producing components that demand exact countersink profiles.

Geometry and cutting behaviour that lowers forces

A central benefit of the tool is its EUC geometry, which, together with prepared cutting edges, produces a markedly lower cutting load: reduced axial force by 50% and reduced radial force by 25%. Lower axial force reduces feed effort and the strain on spindle bearings, while lower radial force minimises chatter and improves surface finish. The tool follows DIN 335 C standards and is right‑hand cutting, making it suitable for automated and manual countersinking operations where process stability is critical.

Workshop advantages and material compatibility

The countersink is made for the machining of steel, cast iron and non‑ferrous metals, and is specified with a cylindrical shank for secure mounting in standard toolholders. Its recommended feed in steel up to 500 N is 0.14 mm/rev, an indicator for setting reliable, measurable machining parameters. The combination of HSS and the special coating offers good resistance to heat and wear without the need for excessive coolant, simplifying maintenance. This tool supports shops aiming to reduce rework and improve throughput while keeping setup straightforward.

Choose the MAPAL 90° countersink for its proven force‑reducing geometry and request specialist guidance from Metav Werkzeuge — Metav Werkzeuge GmbH, Parkring 45, 46446 Emmerich; eMail: info@metav-werkzeuge.com; Tel: +49 2822 7131930

Technical data

• Article number: 4000806029NW
• Description: Conical countersink EUC DIN 335C 90° Ø 16.5 mm HSS special, cylindrical shank, 3 cutting edges BECK
• Manufacturer: MAPAL Dr. Kress SE & Co. KG
• Packaging unit: 1

Facts

• Diameter: 16.5 mm
• Countersink angle: 90°
• Cutting edges: 3
• Recommended feed in steel (up to 500 N): 0.14 mm/rev

Special features

• HSS
• Special coating
• DIN 335 C
• Right‑hand cutting
• Precision execution
• Radially relieved for reduced runout
• Suitable for steel, cast iron and non‑ferrous metals
• Reduction of axial force by 50%
• Reduction of radial force by 25%
• EUC (extremely unequal division) geometry
• Cylindrical shank

FAQ

What materials can be machined with the MAPAL Countersink EUC DIN 335C 90°?
The countersink is specified for machining steel, cast iron and non‑ferrous metals, making it versatile for general workshop and production use.

How does the EUC geometry improve performance?
EUC geometry on the 4000806029NW creates unequal tooth spacing and prepared cutting edges, which reduces cutting forces and vibration, improving surface finish and process stability.

What feed rate is recommended for steel with this countersink?
For steel up to 500 N, the recommended feed is 0.14 mm/rev, a guideline for achieving consistent results without overloading the tool.

Is the tool suitable for automated production?
Yes; the three cutting edges, precision ground design and cylindrical shank provide concentricity and balance suitable for automated countersinking in production environments.

Which standard does this countersink follow?
The tool is manufactured to DIN 335 C specifications, ensuring dimensional conformity for engineering and quality control processes.

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