6.3-25mm Countersink Set DIN 335C 90° HSS Special 3-Flute Shank With Three-Point Flats, Plastic Case - MAPAL Dr. Kress SE & Co. KG

Take advantage of reduced feed effort and improved surface quality thanks to the combination of a refined cutting geometry and a HSS substrate with special coating; robust clamping is ensured by the shank with three flats and practical storage in a plastic box. Order via Metav Werkzeuge or request technical clarification from the consultants in Emmerich.

MAPAL Countersink set DIN 335 C — HSS, 90° (6.3–25 mm)

A MAPAL Countersink set DIN 335 C engineered for precision countersinking in workshops and production environments for steel, cast iron and non‑ferrous materials

• High-performance HSS with special coating
• Optimised 90° countersinking geometry
• Shank with three flats for secure clamping
• Suitable for steel, cast iron and non‑ferrous metals

Faster, cleaner countersinking with measurable force reduction

The set is based on HSS with a special coating, combined with a new geometry that cuts energy input. Measured reductions—around 50% less axial force and 25% less radial force—translate directly into lower feed effort and diminished tendency to chatter during the process. These quantified improvements support higher throughput and reduce operator fatigue when performing repetitive countersinking tasks.

Consistent hole quality through optimised geometry and unequal spacing

Built to DIN 335 C, the cutters employ an EUC (extremely unequal division) that breaks harmonic resonance. The prepared cutting edges and radial honing (radial relief) produce a smoother material flow and a predictable chip formation. The result is a repeatable finish and more reliable hole geometry—important when countersinks feed into assembly operations or require consistent seating for fasteners.

Broad material compatibility for versatile workshop use

Designed for applications in steel, cast iron and non‑ferrous metals, the set covers common workshop requirements without frequent tool changes. The standard 90° countersink angle and the diameter range 6.3–25 mm make the cutters suitable for deburring, seat preparation and chamfering across a wide component spectrum. The right‑hand cutting direction ensures conventional toolpaths and simple integration in existing machining sequences.

Secure clamping and practical handling for professional use

Each cutter features 3 cutting edges and a shank with 3 flats for positive torque transmission and secure clamping in chucks or collets. The set is supplied in a plastic box, aiding organisation and safe tool storage between operations. The precision execution and right‑hand cutting characteristics make the set appropriate for both single‑part production and serial manufacturing where setup stability is essential.

Contact Metav Werkzeuge for advice on selecting the right MAPAL countersink configuration and to arrange supply from our Emmerich stock.

Technical data

• Article number / SKU: 4000806130NW
• Label: Kegelsenkersatz DIN 335C 90Grad EUC 6,3-25mm HSS spezial 3-Fl.schaft Ku.-Box
• Packaging unit: 1
• UID: 4000806130NW

Facts

• Countersink angle: 90°
• Diameter range: 6.3–25 mm
• Cutting edges: 3
• Axial force reduction: ≈50%
• Radial force reduction: ≈25%
• Standard: DIN 335 C

Special features

• Material: HSS, special coating
• Geometry: EUC (extremely unequal division), prepared cutting edges
• Shank: with 3 flats for secure clamping
• Cutting direction: right‑hand cutting
• Precision execution, radial relief ground
• Packaging: plastic box
• Applications: steel, cast iron, non‑ferrous metals

FAQ

What diameter range is covered by the set?
The set covers 6.3–25 mm, allowing selection of the appropriate cutter size for a wide range of countersinking and chamfering tasks.

How does the EUC geometry improve results?
Extremely unequal division in the cutters reduces harmonic excitation; this lowers vibration and improves surface finish and positional accuracy during countersinking.

Is the set suitable for hardened steel?
The cutters are intended for steel, cast iron and non‑ferrous metals as stated; higher hardness applications are not specified in the technical details provided for this set.

What clamping method is recommended?
A secure chuck or collet gripping the shank with 3 flats is recommended to ensure positive drive and minimise runout for accurate countersinking.

Does the packaging support organised storage on the shop floor?
Yes, the set is supplied in a plastic box for organised storage and straightforward identification in a professional workshop.

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