20.5mm Countersink 90° HSS Nano Coated 3-Flute 3-Flat Shank, For Steel Aluminium Brass Plastics - TECWERK

Benefit from faster, quieter countersinking with significantly reduced feed force and extended tool life thanks to the HSS Nano coating and optimised flute geometry; order directly via Metav Werkzeuge or consult the team for application advice.

TECWERK 90° Countersink DIN 335 C Ø20.5 mm — HSS Nano, 3-flute

The TECWERK 90° Countersink is a precision conical countersink for standard chamfers and deburring in a wide range of metals and plastics, designed for stable running and long service intervals

• HSS with Nano coating for high wear resistance
• 90° conical geometry for standard countersinking
• 3-flute design for smooth, quiet cutting
• Up to 60% longer tool life under optimised conditions

Faster, more consistent countersinking for production environments

The combination of HSS substrate and a specialised Nano coating produces a tool that delivers lower feed forces and consistently accurate chamfers. The tool's geometry and variable relief grind reduce friction and heat build-up, which directly results in up to 60% longer tool life and up to 30% faster countersinking compared with conventional countersinks. These measurable improvements translate into fewer tool changes, less downtime and a steadier production flow.

Broad material compatibility with proven chip control

Engineered to work on steel, stainless and heat-resistant steels, aluminium, brass and various plastics, the countersink follows DIN 335 C standards and offers right-hand cutting action for predictable results. The three-flute configuration optimises chip formation and evacuation, producing an extremely quiet running tool with an optimised surface finish. The shank with three flats (from nominal Ø 8.3 mm) ensures secure clamping and concentricity in standard toolholders.

Practical shop-floor benefits and recommended parameters

On the shop floor, the tool’s reduced thrust requirement lowers force on the workpiece and machine spindle, improving repeatability in serial production. The tool's design features—optimised chip space, variable back taper and enhanced hot hardness—help maintain cutting performance during extended runs. For reference, a recommended feed in steel up to 800 N is 0.2 mm/rev, providing a balance between material removal and surface quality while preserving tool life.

Choose TECWERK countersinks via Metav Werkzeuge for reliable, industrial-grade performance — contact Metav Werkzeuge for tailored advice at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000865182NW
• SKU: 2000865182NW
• Manufacturer: TECWERK

Facts

• Diameter: 20.5 mm
• Countersink angle: 90°
• Cutting edges: 3 flutes
• Shank: 3 flats from nominal Ø 8.3 mm
• Feed in steel up to 800 N: 0.2 mm/rev
• Standard: DIN 335 C
• Cutting direction: right-hand

Special features

• HSS base material
• Nano coating
• Variable relief/hinterschliff for optimised cutting
• Suitable for steel, stainless and heat-resistant steels, aluminium, brass, plastics
• Reduced feed force required
• Up to 60% higher tool life (optimised conditions)
• Up to 30% faster countersinking (optimised conditions)
• Extremely quiet running and optimised countersinking performance

FAQ

What materials can this countersink process reliably?
The TECWERK 90° countersink is specified for steel, stainless and heat-resistant steels, aluminium, brass and plastics, providing consistent chamfers across this material range.

Is the tool suitable for high-volume production?
Yes. The combination of HSS and Nano coating, together with optimised flute geometry, gives improved wear resistance and extended runtimes suitable for series production.

Which shank types does the countersink accept?
The tool features a shank with three flats from nominal Ø 8.3 mm, enabling secure clamping in standard collets and tool holders.

What cutting parameters are recommended for steel?
A practical reference provided with the tool indicates a feed in steel up to 800 N of 0.2 mm/rev, balancing speed and tool life.

How does the nano coating improve performance?
The Nano coating increases surface hardness and thermal resistance, reducing adhesion and abrasion to achieve higher wear resistance and longer tool intervals.

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