6.3–20.5mm Countersink Set 90° 3-Flute HSS In Plastic Case - Ruko GmbH

Take advantage of precise chamfering, robust HSS cutting performance and organised storage in an impact‑resistant case for reliable workshop results; order the set directly via Metav Werkzeuge or consult their specialists for application advice.

RUKO Countersink Set DIN 335 C, HSS, 90° – 6.3–20.5 mm (6 pcs)

The RUKO Countersink Set DIN 335 C is a six‑piece HSS countersink collection designed for accurate chamfering and deburring in metalworking and general workshop use.

• DIN 335C standard, 90° countersink angle
• Three cutting edges for smooth chamfering
• HSS for durable, sharp cutting performance
• Impact‑proof plastic case for secure storage

High precision and efficient cutting geometry

The set conforms to DIN 335 C, with a 90° countersink angle and three cutting edges, a geometry that produces consistent, concentric chamfers and reduces vibration during cutting. The use of HSS ensures a balance between toughness and edge retention; this supports repeated use and, when required, straightforward regrinding. These technical attributes translate into fewer rejects and a steadier production flow, especially where reliable fastener seating and clean hole edges are critical for assembly quality.

Practical kit design for tidy workshop workflows

The six countersinks cover the 6.3–20.5 mm diameter range, enabling one‑step selection for common hole sizes and reducing tool changes. Stored in an impact‑ and break‑resistant plastic cassette, the set protects cutting edges and keeps tools organised at the bench or in a toolbox. Clear labelling and compact storage mean faster tool selection, less downtime and a tidier workstation—advantages that contribute directly to operational efficiency in small series production or maintenance tasks.

What the geometry and materials mean in practice

Countersinking creates a precise chamfer for screw heads or to remove burrs; the three‑edge design offers a cleaner finish than two‑edge alternatives by distributing cutting forces and producing a more uniform surface. The high‑speed steel composition provides durability and is suitable for standard workshop materials commonly encountered in metalworking. For best results, select appropriate spindle speeds and steady feed rates; the cutters can be re‑sharpened when edge wear becomes evident, extending service life and reducing long‑term tooling costs.

For ordering or application support for the RUKO countersink set, contact Metav Werkzeuge to request purchasing or tailored technical advice — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 4000601498NW
• Product name: RUKO Countersink set DIN 335 C 90° 6.3–20.5 mm HSS
• Packaging unit: 1

Facts

• Countersink angle: 90°
• Cutting edges: 3
• Diameter range: 6.3–20.5 mm
• Pieces: 6

Special features

• Material: HSS
• Case: impact‑ and break‑resistant plastic cassette
• Standard: DIN 335 C

FAQ

What diameter range is covered by the set?
The set covers a diameter range of 6.3–20.5 mm, allowing selection for common hole sizes without additional tools.

How many pieces are included and what is the SKU?
The kit contains six countersinks; SKU 4000601498NW identifies the RUKO countersink set.

What does DIN 335 C specify for these countersinks?
DIN 335 C defines the countersink geometry and dimensions for cone countersinks; the specification ensures interchangeability and predictable chamfer angles across tools produced to that standard.

Can the cutters be resharpened?
Yes, the high‑speed steel construction permits regrinding when the cutting edges blunt, extending tool life and reducing replacement frequency.

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