12.4mm Countersink 120° HSS 3-Flute Cylindrical Shank, Right-Hand Cutting - TECWERK

Take advantage of the combination of HSS construction, a 120° conical geometry and a secure 8 mm shank for reliable, burr‑free countersinking in steel and non‑ferrous metals; order directly via Metav Werkzeuge or consult the technical team for application advice.

TECWERK 120° Conical Countersink, Ø 12.4 mm — HSS, 3‑flute, 8 mm shank

The TECWERK 120° Conical Countersink is a high‑speed steel tool designed for clean countersinking, deburring and sinking in steel, castings and light non‑ferrous metals.

• HSS construction for high wear resistance
• 120° point for accurate screw seating
• Three‑flute geometry for smooth finish
• 8 mm cylindrical shank for secure clamping

Faster, cleaner seating for consistent assemblies

The HSS material and three‑flute geometry combine to deliver burr‑free countersinking and reduced chatter, which lowers rework rates and speeds assembly steps. The 120° apex is matched to common fastener heads, ensuring a precise seating angle and improved joint integrity. With a feed recommendation of 0.14 mm per rev in steel (Form C specification), the tool balances material removal with surface quality, making it well suited to production lines and workshop jobs where repeatability matters.

Robust geometry that prolongs service intervals

A cylindrical 8 mm shank provides stable clamping in standard holders, reducing run‑out and vibration that can shorten tool life. The tool’s Form C profile and right‑hand cutting direction favour controlled chip flow and predictable wear patterns, which simplifies tool change planning. Best results are achieved at low cutting speeds, where heat and abrasion are minimised, extending service intervals and reducing total tooling costs per part — a direct efficiency gain for manufacturing operations.

Straightforward integration into existing workflows

The countersink’s dimensions and shank form allow straightforward insertion into common chucks and collets, cutting set‑up time and supporting quick tool changes. The specified feed recommendation gives a practical starting point for process development: 0.14 mm per revolution in steel corresponds to a stable material engagement that reduces burr formation. For applications in castings, aluminium alloys and other light metals, the geometry supports clean deburring with minimal secondary finishing, helping to streamline downstream processes.

Reliable handling that supports quality control

Engineered for stable cutting and clear chip evacuation, this tool delivers reproducible edge conditions that ease inspection and assembly. The combination of HSS durability and the three‑flute design yields a consistent surface that reduces the need for manual deburring, improving throughput and operator comfort. For workshops seeking predictable, high‑quality results with minimal adjustment, the tool provides a pragmatic balance between performance and ease of use.

For professional countersinking and technical advice on the TECWERK 120° conical countersink, contact Metav Werkzeuge for application support or to arrange supply: info@metav-werkzeuge.com | +49 2822 7131930

Technical data

• Article number: 2000865141NW
• Product name: TECWERK 120° Conical Countersink Ø 12.4 mm, HSS, 3‑flute, 8 mm shank
• Brand: TECWERK
• Packaging unit: 1

Facts

• Diameter: 12.4 mm
• Shank diameter: 8 mm
• Point angle: 120°
• Flutes: 3 (three‑flute)
• Feed in steel: 0.14 mm/rev

Special features

• Material: high‑speed steel (HSS)
• Form: C
• Cutting direction: right‑hand cutting
• Shank: cylindrical, suitable for standard holders
• Application: countersinking, deburring and sinking in steel, castings, non‑ferrous and light metals
• Recommended: best results at low cutting speed

FAQ

What materials can this countersink process effectively?
The TECWERK 120° conical countersink is suitable for steel, castings and various non‑ferrous and light metals, delivering clean deburring and reliable sinking results.

How should the feed be set when countersinking steel?
A feed of 0.14 mm per revolution in steel is specified for the tool; this setting supports smooth chip formation and reduces burrs during countersinking operations.

Is the shank compatible with standard chucks and collets?
Yes, the 8 mm cylindrical shank is designed for secure clamping in standard chucks and collets, ensuring stable running and reduced vibration.

What advantages does the three‑flute geometry provide?
The three‑flute design on the TECWERK countersink improves surface finish and chip control, resulting in burr‑free edges and less need for secondary finishing.

Which cutting speed is recommended for best tool life?
Best outcomes are achieved at low cutting speeds, where heat generation and abrasion are limited, prolonging the life of the HSS tool.

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