20.5mm Countersink 120° HSS 3-Flute Cylindrical Shank, Right-Hand Cutting, For Steel, Cast Iron, Non-Ferrous - TECWERK

Combining HSS construction, a 120° chamfer geometry and a secure 10 mm cylindrical shank, this countersink delivers burr-free chamfering and reliable centring for demanding workshop and production tasks. Order via Metav Werkzeuge or request specification support from their technical consultants.

TECWERK Countersink 120° Ø20.5 mm (HSS, 3-flute, 10 mm shank)

The TECWERK Countersink 120° Ø20.5 mm is a high-speed steel, three-flute countersink designed for precise deburring, chamfering and recessing across steels, castings and non-ferrous metals

• HSS, Form C; three cutting edges
• 120° chamfer angle for precise countersinking
• Cylindrical 10 mm shank for secure tool clamping
• Optimised for burr-free deburring on steel and non-ferrous

Precision chamfers that reduce rework and improve assembly

The defined 120° cutting geometry combined with three cutting edges creates a stable cutting action that reduces vibration and prevents chatter. That geometry provides a consistent chamfer profile and supports burr-free finishing, which lowers subsequent rework and speeds up assembly operations. The combination of form and flute count ensures the cutting forces are distributed evenly; this results in a cleaner edge and improved visual and functional quality on both through-holes and recessed countersinks.

Robust HSS construction and reliable clamping for production use

Manufactured from HSS with Form C geometry, the tool maintains sharpness under interrupted cuts typical in deburring and chamfering operations. The 10 mm shank is cylindrical for compatibility with standard collets and drill chucks, enabling secure clamping and repeatable concentricity. Right-hand cutting and the three-flute design support efficient chip evacuation on steel, cast and non-ferrous metals, which helps preserve the workpiece surface and extends tool life under correct cutting conditions.

Controlled cutting parameters for consistent, safe results

The countersink is optimised for low cutting speed to achieve the best surface quality; recommended feed in steel is 0.2 mm/rev, providing a balance between finish and productivity. The tool is described as ideal for burr- and chatter-free countersinking, deburring and recessing tasks, making it suitable for both workshop maintenance and small-series production. Using conservative speeds and the specified feed avoids overheating and preserves the HSS cutting edge, while the geometry promotes steady cutting even in interrupted or varied material sections.

Contact Metav Werkzeuge for tailored advice and secure procurement of TECWERK countersinks — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000865143NW
• Product label: TECWERK countersink 120° Ø20.5 mm, HSS, 3-flute, shank Ø10 mm
• Manufacturer: TECWERK
• Packaging unit: 1

Core data

• Countersink diameter: 20.5 mm
• Countersink angle: 120°
• Cutting edges: 3
• Shank diameter: 10 mm
• Recommended feed in steel: 0.2 mm/rev

Special features

• Material: High-speed steel (HSS)
• Form: C
• Shank: Cylindrical
• Cutting direction: Right-hand cutting
• Applications: Countersinking, chamfering, deburring, recessing
• Suitable materials: Steel, castings, non-ferrous and light metals
• Best results at low cutting speed

FAQ

What materials can this countersink process effectively?
The TECWERK countersink is suitable for steel, castings and a range of non-ferrous and light metals, offering good deburring and chamfering performance across these materials.

What shank size is required for clamping?
A 10 mm cylindrical shank is provided; the tool fits standard 10 mm collets and compatible chucks for secure clamping and repeatable concentricity.

What angle and flute count does the tool have?
The tool features a 120° chamfer angle and three flutes, designed for stable cutting and improved surface finish during countersinking.

Are there recommended cutting parameters?
Best results are achieved at low cutting speeds; a recommended feed in steel is 0.2 mm/rev to balance finish quality and tool life.

What benefits does the three-flute geometry offer?
The three-flute design distributes cutting forces evenly, improves chip evacuation and reduces the risk of chatter, contributing to a burr-free finish.

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