31mm Countersink 90° HSS Nano Coated 3-Flute Three-Point Shank, For Steel/Aluminium/Brass/Plastics - TECWERK

Take advantage of the combination of high‑speed steel construction, a Nano coating and a three‑flute geometry for reduced feed force, extended tool life and faster countersinking — order the TECWERK countersink directly via Metav Werkzeuge or ask the consultants if needed.

TECWERK countersink DIN 335 C, 90° D31 mm — HSS, Nano‑coated, 3‑flute

The TECWERK countersink DIN 335 C 90° D31 mm is a precision HSS countersink designed for industrial and workshop use, optimised for low‑force, high‑quality chamfering and deburring across a wide range of materials.

HSS with Nano coating for wear resistance
Three‑flute geometry for exceptionally smooth running
Up to 60% longer tool life under comparable conditions
Shank with three flats from nominal Ø 8.3 mm for secure clamping

Consistent performance through engineered geometry

The TECWERK countersink is built from HSS and finished with a Nano coating that increases hot hardness and wear resistance. The tool adheres to DIN 335 C with a 90° angle and a 31 mm diameter, making it suitable for precision chamfering tasks. The three‑flute design reduces vibration and delivers an extremely smooth run, which in practice means fewer rejects and a steadier finish on drilled holes — a direct benefit for production lines where surface quality and repeatability matter.

Faster cutting with lower feed forces

A combination of specially developed flute geometry and a variable relief reduces the required feed force significantly; empirical tests show up to 30% faster countersinking and substantially lower cutting forces in many steels. The tool’s recommended feed in steel under loads up to 800 N is 0.2 mm/rev, a practical benchmark for setting machine parameters. These characteristics translate into faster cycle times and reduced operator effort when bench‑work or CNC finishing is performed.

Broad material compatibility and application tips

This countersink is suitable for machining steel, stainless steels, heat‑resistant steels, aluminium, brass and various plastics, thanks to the HSS substrate and coating. For aluminium and soft materials, maintain moderate spindle speeds and ensure chip evacuation to avoid built‑up edge; for stainless and heat‑resistant alloys, the Nano coating and optimised chip space maintain cutting temperature and prolong tool life. For fine finishing, consider a light finishing pass at reduced feed to achieve the best chamfer definition.

Practical handling and workshop integration

The shank features three clamping flats from nominal Ø 8.3 mm, ensuring positive engagement in collets and chucks and reducing slippage during high‑torque operations. The cutter is right‑hand cutting and benefits from the variable relief that aids in chip breaking and reduces rubbing. For retrofit into existing toolholders, confirm the shank diameter and flat positions; when mounted correctly, the cutter provides a predictable runout and minimal radial chatter, supporting consistent hole preparation in assembly and fabrication workflows.

For specialist application advice or to acquire the TECWERK countersink with Nano coating, contact Metav Werkzeuge for consultation and order arrangements: info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 2000865185NW
• Label: Kegelsenker DIN 335C 90Grad D.31mm HSS Nano 3‑Fl.schaft Z.3 TECWERK
• DIN designation: DIN 335 C

Facts

• Diameter: 31 mm
• Countersink angle: 90°
• Feed in steel ≤ 800 N: 0.2 mm/rev
• Number of flutes: 3

Special features

• Material: HSS
• Coating: Nano coating
• Shank: with three flats from nominal Ø 8.3 mm
• Cutting direction: right‑hand cutting
• Relief: variable relief geometry
• Suitable for: steel, stainless steels, heat‑resistant steels, aluminium, brass, plastics
• Advantages: reduced feed force, up to 60% higher tool life, up to 30% faster countersinking, extremely smooth run, optimised chip space and wear resistance

FAQ

Which materials can be machined with this countersink?
The TECWERK countersink is suitable for steel, stainless and heat‑resistant steels, aluminium, brass and various plastics according to the technical data and optimised flute geometry.

What clamping provisions are required for safe use?
A toolholder or chuck that accommodates the shank with three flats from nominal Ø 8.3 mm is recommended to ensure secure clamping and reduced slippage during operation with the TECWERK countersink (SKU 2000865185NW).

What spindle speed and feed are recommended for steel?
For steel under loads up to 800 N, a feed of 0.2 mm/rev is a practical starting point; adjust spindle speed and feed according to specific alloy and machine rigidity.

How does the Nano coating affect performance?
The Nano coating increases hot hardness and wear resistance, contributing to longer tool life and improved performance in abrasive and high‑temperature cutting conditions when using this countersink.

Is this tool suitable for use on CNC machines and hand drills?
The cutter is designed for industrial use and is compatible with CNC machines; when used in handheld drills, ensure the holder secures the shank flats properly to avoid slippage.

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