16.5mm Countersink 90° Three-Point HSS-Co, 3 Flutes, Cylindrical Shank - TECWERK

Take advantage of the HSS‑Co alloy and the 3‑flute, chatter‑free geometry to achieve consistent, burr‑free chamfers and reduced rework; order the countersink directly via Metav Werkzeuge or consult our specialists for application guidance.

Countersink DIN 335 C – 90° Ø16.5 mm, HSS‑Co, 3‑flute (TECWERK)

The Countersink DIN 335 C – 90° Ø16.5 mm by TECWERK is a precision tool for clean countersinking and deburring of holes in steel, cast iron and non‑ferrous materials

• Countersink DIN 335 C 90° for clean chamfers
• 3‑flute design for chatter‑free cutting
• HSS‑Co for stainless and heat‑resistant steel
• Cylindrical shank, suitable for standard chucks

Improve productivity with precise 90° chamfers

The 90° geometry provides a standard chamfer angle for reliable screw seating and deburring, reducing the need for secondary finishing. Manufactured to DIN 335 C, the tool ensures repeatable results across batches and materials. The Ø16.5 mm size offers a widely used diameter for common fastener preparations, enabling straightforward integration into existing processes. With a design focused on predictable cutting behaviour, machinists can expect fewer rejects and a more consistent surface finish, which in turn supports higher overall throughput.

High‑alloy substrate for demanding materials

Made from HSS‑Co (cobalt high‑speed steel), the cutter is specified for applications beyond standard steels, extending suitability to stainless and heat‑resistant steels. The cobalt alloy raises red hardness and wear resistance, giving longer tool life under elevated temperatures and aggressive cutting conditions. For workshops facing mixed production runs—steel, cast iron and non‑ferrous metals—this material choice reduces tool changes and contributes to lower tooling costs per part while maintaining edge integrity for precise deburring and chamfering tasks.

Three‑flute geometry for a smooth, chatter‑free cut

The 3‑flute configuration delivers an even chip load and a stable cutting action, which is especially beneficial when working with interrupted cuts or thin‑walled components. This geometry is described as chatter‑free, translating directly into improved surface quality and less manual finishing. The balanced cutting edges also help to maintain concentricity when used in standard drill chucks or collets with the cylindrical shank, ensuring that each chamfer is clean and true to spec.

Practical machining data and application guidance

For shopfloor planning, the cutter’s recommended feed in steel (up to 500 N) is 0.14 mm/rev, a guideline that helps optimise surface finish and tool life. The cylindrical shank lends itself to quick clamping in a wide range of drill chucks and toolholders, supporting straightforward changeovers. Use cutting speeds and feeds compatible with HSS‑Co tools and consider appropriate coolant or lubrication for stainless and high‑temperature alloys to extend service life. The tool excels where reliable, repeatable countersinking and deburring are required, improving process stability and reducing manual rework.

For precision chamfers with high material versatility, choose the TECWERK 90° HSS‑Co countersink and contact Metav Werkzeuge GmbH in Emmerich for tailored supply and technical advice from stock.

Technical data

• Article number: 2000865010NW
• Product: Countersink DIN 335 C, 90° Ø16.5 mm, HSS‑Co, 3 flutes (TECWERK)
• Manufacturer: TECWERK
• Packaging unit: 1
• Internal ID: 2000865010NW

Core specifications

• Diameter: 16.5 mm
• Countersink angle: 90°
• Cutting edges: 3 flutes
• Recommended feed in steel (≤500 N): 0.14 mm/rev
• Shank: cylindrical

Materials & special features

• Material: HSS‑Co (cobalt high‑speed steel)
• Suitable for: steel, cast iron, non‑ferrous metals, stainless and heat‑resistant steels
• Standard: DIN 335 C
• Function: countersinking and deburring of holes
• Feature: three‑edge geometry for chatter‑free cutting

FAQ

Can this countersink be used on stainless steel?
Yes. The TECWERK countersink is the HSS‑Co version and is suitable for stainless and heat‑resistant steels, offering improved wear resistance compared with standard HSS.

What are the nominal size and angle of the tool?
The cutter is designed to Ø16.5 mm with a 90° countersink angle, conforming to DIN 335 C for standard chamfering tasks.

Is the cutter suitable for non‑ferrous materials and cast iron?
Yes. The tool is specified for steel, cast iron and non‑ferrous metals, making it versatile for mixed‑material production runs.

What clamping is required for the cylindrical shank?
The cylindrical shank is compatible with standard drill chucks and most collet systems; secure clamping ensures concentric countersinking and consistent results with the TECWERK item.

What cutting performance can be expected in steel?
With its 3‑flute, chatter‑free geometry the tool produces a smooth finish; a recommended feed in steel (up to 500 N) is 0.14 mm/rev for balanced surface quality and tool life.

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