20.5mm Countersink 90° HSS Nano Coated 3-Flute Shank, Right-Hand - TECWERK

Benefit from the combination of HSS nano coating, reduced feed force and up to 60% longer tool life for faster, more reliable countersinking; order the tool directly via Metav Werkzeuge or contact our consultants for application advice.

TECWERK 90° countersink DIN 335 C, 20.5 mm — HSS Nano, 3 cutting edges

The TECWERK 90° countersink DIN 335 C is a high‑performance cutting tool designed for precision countersinking in steel, stainless and heat‑resistant steels, aluminium, brass and plastics

• HSS nano coating for high wear resistance
• 90° angle for standard countersinks
• Three cutting edges for smooth cutting
• Lower feed force and longer service life

Faster countersinking with measurable gains

The combination of HSS tool steel and a specialised nano coating delivers clear productivity advantages: the geometry and coating reduce cutting resistance, resulting in lower feed force and countersinking speeds that are reported to be up to 30% faster. That reduced cutting load also translates into up to 60% longer tool life, which lowers tool change frequency and machine downtime. For practical planning, the recommended feed in steel up to 800 N is 0.2 mm/rev, a figure that supports predictable cycle times and consistent surface quality. These measurable benefits make the tool suitable for batch production and precision workshop work where throughput and repeatability matter.

Precision geometry for calm, accurate running

Built with three cutting edges and a variable relief the design ensures an even material removal and a quiet, steady run. The optimised chip space and specially developed chip‑space parameters prevent clogging and reduce vibration, producing cleaner countersinks with minimal burr formation. A shank with three clamping flats from nominal Ø 8.3 mm secures the tool in the holder and improves concentricity, which supports tight tolerance work. The right‑hand cutting geometry and the refined cutting angles combine to give a controlled, smooth cut—important where finish quality and concentricity are critical.

Broad material compatibility with robust temperature resistance

Thanks to the material selection and coating, the countersink is suitable for steel, stainless and heat‑resistant steels, aluminium, brass and plastics. The nano coating improves wear resistance and hot hardness, meaning the tool retains its cutting edge at elevated temperatures and under heavy loads. For users unfamiliar with terms: HSS stands for high‑speed steel, a tough alloy that balances edge retention with fracture resistance, while the nano coating is an ultra‑thin surface treatment that reduces friction and increases wear performance without compromising dimensional accuracy. The result is a versatile tool that performs reliably across common workshop materials and maintains finish quality even under repeated use.

For precision countersinking with reduced cutting forces and rapid supply from our Emmerich stock, contact Metav Werkzeuge for application advice and availability at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000865182NW
• Name: TECWERK 90° countersink DIN 335 C, 20.5 mm
• Brand: TECWERK
• Packaging unit: 1

Facts

• Diameter: 20.5 mm
• Angle: 90°
• Cutting edges: 3
• Shank clamping flats from nominal Ø 8.3 mm
• Feed in steel up to 800 N: 0.2 mm/rev

Special features

• HSS material
• Nano coating
• Right‑hand cutting
• Variable relief (Hinterschliff)
• Optimised chip‑space parameters
• Suitable for steel, stainless and heat‑resistant steels, aluminium, brass and plastics
• Reduced feed force
• Up to 60% higher tool life
• Up to 30% faster countersinking
• Extremely quiet running
• Optimised countersinking quality
• High wear resistance and hot hardness

FAQ

What materials can this countersink handle? The TECWERK 90° countersink is suitable for steel, stainless and heat‑resistant steels, aluminium, brass and a range of plastics.

How many cutting edges does the tool have and what is the benefit? The tool has three cutting edges; this arrangement provides smoother cutting, improved surface finish and a quieter run compared with two‑edge countersinks.

What is the recommended feed rate in steel? For steel with cutting forces up to 800 N the recommended feed is 0.2 mm/rev for reliable chip evacuation and consistent results.

Does the nano coating improve tool life? Yes, the nano coating increases wear resistance and hot hardness, contributing to the stated longer service life and better performance under heat load.

Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund