25mm Countersink 90° HSS Special Coated, 3-Flute Euclidean Unequal Division, Cylindrical Shank, For Steel Casts Non-Ferrous - MAPAL Dr. Kress SE & Co. KG

Take advantage of the combination of HSS special coating, EUC geometry and precision grinding for quieter, more efficient countersinking; the reduced axial and radial forces lead to smoother feeds and less chatter. Order the MAPAL countersink directly via Metav Werkzeuge or consult the Metav specialists for application advice.

MAPAL conical countersink EUC – 90° · 25 mm · HSS · 3-flute

The MAPAL conical countersink designed for precision chamfering and deburring across steel, cast iron and non‑ferrous metals

• HSS special coating for extended life
• 90° conical design per DIN 335 C
• EUC geometry reduces axial force by 50%
• For steel, cast iron and non‑ferrous metals

Higher process stability through optimised geometry

The conical countersink is engineered with EUC geometry and an extremely unequal flute division that changes cutting impulses and reduces vibration. The tool’s radial relief and precision ground cutting edges give a measurable improvement in surface finish and tool run‑out, while the unequal pitch dampens chatter. Thanks to the geometry, axial force is lowered by approximately 50% and radial force by around 25%, which translates into reduced feed effort and steadier machining in serial or manual operations.

Reliable cutting performance for mixed materials

Manufactured from HSS and finished with a special coating, the countersink provides wear resistance and reduced built‑up edge when working with steel, cast iron and various non‑ferrous alloys. The 90° chamfer angle conforms to DIN 335 C, making the tool suitable for standard countersinking tasks prior to fastening or for deburring holes after drilling. For feeds in steel under a cutting force up to 500 N, a guideline feed of 0.18 mm/rev is indicated, combining efficiency with controlled chip formation.

Longer tool life through three‑edge stability and balanced shank

The three cutting edges and cylindrical shank ensure secure clamping and even material removal, improving concentricity and extending tool life under repeated use. The tool’s precision execution and special surface finish lower friction at the cutting zone, which reduces heat generation and preserves edge geometry. The net result is fewer tool changes, less rework and more consistent chamfers in production environments where repeatability counts.

Practical application and set‑up advantages

The countersink is right‑hand cutting and suitable for use in toolrooms and production lines where predictable results are essential. The DIN 335 C conformity simplifies process planning and tool selection; the combination of HSS, special coating and EUC design means quieter operation and reduced risk of chatter even at higher feeds. The tool suits handheld and machine holders compatible with a cylindrical shank and is particularly beneficial where a reduction in feed force or oscillation improves operator comfort and part quality.

Contact Metav Werkzeuge for tailored application advice on the MAPAL conical countersink EUC or arrange a technical consultation with our specialists at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 4000806031NW
• Description: Conical countersink EUC, DIN 335 C, 90°, D 25 mm, HSS, cylindrical shank, 3 cutting edges
• Manufacturer: MAPAL Dr. Kress SE & Co. KG
• Packaging unit: 1
• UID: 4000806031NW

Facts

• Diameter: 25 mm
• Countersink angle: 90°
• Cutting edges: 3
• Feed in steel (up to 500 N): 0.18 mm/rev
• Standard: DIN 335 C

Special features

• HSS material with special coating
• EUC (extremely unequal division) geometry
• Right‑hand cutting
• Precision ground, radial relief
• Suitable for steel, cast iron and non‑ferrous metals
• Cylindrical shank

FAQ

What materials is this countersink suitable for?
The MAPAL conical countersink EUC is suitable for machining steel, cast iron and non‑ferrous metals, offering stable performance across these material groups.

How much does the EUC geometry improve machining?
EUC geometry reduces axial force by approx. 50% and radial force by approx. 25%, leading to smoother feeds and less tendency to chatter during countersinking.

What feed is recommended for steel?
For cutting forces up to 500 N in steel, a guideline feed of 0.18 mm/rev is provided for the MAPAL countersink to balance productivity and surface quality.

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