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

Take advantage of the combination of durable TiAlN coating, precise 90° countersink geometry and a compact six-size range for reliable chamfering and fast setup. Order or request application advice directly via Metav Werkzeuge to keep production running smoothly.

RUKO Countersink Set DIN 335 C — 90° HSS TiAlN, 6.3–20.5 mm (6-piece)

The RUKO Countersink Set DIN 335 C is a workshop-grade countersinking set designed for clean chamfers and deburring across a wide diameter range, ideal for metalworking and general workshop applications

• DIN 335 C standard compliance
• 90° countersink geometry
• TiAlN-coated HSS for wear resistance
• Impact-resistant plastic case for storage

Reliable, repeatable chamfers for production use

The set delivers consistent 90° chamfers across its 6.3–20.5 mm range, enabling standardised seating for countersunk fasteners and a noticeable reduction in rework time. Each tool is formed to the DIN 335 C profile and fitted with three cutting edges, which stabilise the cut and reduce axial run-out; this results in smoother surfaces and fewer burrs compared with single‑edge cutters. For shop managers and production engineers this means improved process reliability: holes are prepared correctly first time, every time, and cycle times remain predictable.

Long tool life and higher process stability

Constructed from High‑Speed Steel (HSS) and finished with a TiAlN coating, the cutters combine substrate toughness with a heat‑resistant surface layer. The TiAlN coating reduces adhesion of chips, increases oxidation resistance at elevated temperatures and therefore extends tool life under intermittent and continuous cutting. For operations that require sustained performance, this pairing reduces the frequency of tool changes and contributes to a steady output quality. The coating properties also help when working with common workshop metals, delivering a balance of wear resistance and cost efficiency.

Easy selection and safe storage in the workshop

The six‑piece arrangement covers common countersinking diameters in a compact, impact‑ and shatter‑resistant plastic case, keeping tools organised and protected between jobs. Clear marking of sizes simplifies tool selection during setup, which reduces machine downtime. The packaging unit supports orderly logistics: a single, robust cassette that fits standard tool trolleys and bench drawers. If specification advice is required for a particular material or fastener type, Metav Werkzeuge provides technical guidance to ensure the chosen cutter sizes match process requirements.

Practical maintenance and handling guidance

Routine care extends service life: keep the cutting edges clean, avoid excessive feed rates at large diameters, and store the set in its case to prevent edge damage. Minor resharpening is possible on appropriate equipment, but the TiAlN finish also delays bluntness compared with uncoated variants. For workshop teams unfamiliar with countersink geometry, the three‑edge design offers a forgiving cut, making it suitable for both manual and machine countersinking where controlled surface finish and reproducibility are required.

Contact Metav Werkzeuge for tailored application advice and expedited supply from our Emmerich warehouse: info@metav-werkzeuge.com | +49 2822 7131930

Technical data

• Article number: 4000601501NW
• Manufacturer: Ruko GmbH
• Packaging unit: 1

Specifications

• Standard: DIN 335 C
• Countersink angle: 90°
• Diameter range: 6.3–20.5 mm
• Cutting edges: 3
• Pieces: 6

Special features

• Material: HSS
• Coating: TiAlN
• Case: impact- and shatter-resistant plastic case
• Packaging: plastic case

FAQ

What materials are suitable for these countersinks?
The RUKO countersink set is made from HSS with a TiAlN coating; it is suitable for common workshop metals and offers improved wear resistance when machining steel and non‑ferrous materials.

What is included in the set and which sizes are covered?
The set contains six countersinks covering the diameter range 6.3–20.5 mm, arranged in a robust plastic cassette for safe storage and easy selection.

What advantages does the TiAlN coating provide?
TiAlN increases surface hardness and heat resistance, reduces chip adhesion and extends tool life compared with uncoated HSS cutters, particularly under higher thermal loads.

Can the cutters be used in hand drills and machine spindles?
The geometry and three‑edge design make the cutters suitable for both controlled hand operations and machine countersinking, provided appropriate speeds and feeds are observed.

How should the set be maintained to prolong service life?
Keep the cutters clean, store them in the supplied case, avoid excessive feed rates, and inspect edges regularly; minor resharpening can restore performance when required.

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