20.5mm 75° Countersink HSS 3-Flute Cylindrical Shank, Form C - TECWERK

Combine the 75° geometry with the HSS three‑flute design to achieve burr‑free countersinking and reduced rework; benefit from a 10 mm cylindrical shank for secure clamping and simple integration into standard holders. Order the TECWERK countersink via Metav Werkzeuge or contact their consultants for procurement advice.

TECWERK 75° Conical Countersink D 20.5 mm, HSS, 3‑flute (shank 10 mm)

The TECWERK 75° Conical Countersink D 20.5 mm is a high‑precision HSS countersink designed for clean countersinking, deburring and chamfering across steel, castings and non‑ferrous metals

• HSS, Form C with 3 flutes
• 75° countersink angle for standard seats
• 10 mm cylindrical shank for secure clamping
• Optimised for low cutting speeds

Precision geometry for reliable, burr‑free results

The conical geometry with a 75° angle and Form C profile gives a consistent seating face for standard fasteners while the three‑flute layout balances cutting action and chip evacuation. Manufactured from HSS, the tool maintains edge stability under typical workshop loads and delivers a burr‑free finish that reduces secondary operations. Right‑hand cutting produces a controlled entry and smooth surface, resulting in fewer rejects and more efficient downstream assembly.

Consistent performance across common workshop materials

Suitable for steel, castings, non‑ferrous metals and light alloys, the countersink performs best at moderate spindle speeds with a conservative feed rate. For machining steel up to a cutting resistance of 500 N, a feed of 0.16 mm/rev is recommended; this value balances material removal with surface integrity. “Low cutting speed” means reducing spindle rpm to limit heat and preserve the HSS cutting edge, which in turn prolongs tool life and keeps component tolerances within specification.

Easy toolholding and measurable workshop benefits

The 10 mm shank fits standard collets and chucks, providing reliable clamping and quick tool changes on manual and small CNC machines. The overall design shortens set‑up time and reduces the need for deburring, contributing to smoother production flow and reduced labour costs. Given its solid construction and predictable cutting behaviour, the tool is a practical choice for trade and industrial shops seeking dependable countersinking with minimal fuss.

For reliable, burr‑free countersinking with TECWERK’s proven HSS geometry, contact Metav Werkzeuge for procurement and technical guidance at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000865136NW
• Label: TECWERK 75° conical countersink, D 20.5 mm
• Manufacturer: TECWERK
• Packaging unit: 1

Core data

• Diameter: 20.5 mm
• Countersink angle: 75°
• Number of flutes: 3
• Shank diameter: 10 mm
• Feed in steel (up to 500 N): 0.16 mm/rev

Special features

• Material: HSS
• Form: C
• Cylindrical shank
• Right‑hand cutting
• Ideal for burr‑free countersinking, deburring and seating
• Suitable for steel, castings, non‑ferrous and light metals
• Best results at low cutting speed

FAQ

What does the 75° angle mean for assembly?
The 75° angle provides a standard seating geometry for many fasteners; the TECWERK 75° conical countersink (SKU 2000865136NW) ensures repeatable contact surfaces for reliable joint strength.

Which materials can be machined with this countersink?
This countersink is suitable for steel, castings, non‑ferrous metals and light alloys; its HSS construction balances toughness and wear resistance across these materials.

What cutting data should be observed for best results?
Aim for moderate spindle speeds and a conservative feed; for steel up to 500 N the recommended feed is 0.16 mm/rev and lower rpm to preserve the HSS edge and achieve a burr‑free finish.

Is the 10 mm shank compatible with standard toolholders?
Yes, the 10 mm cylindrical shank suits common collets and chucks, enabling secure clamping and quick tool changes on manual and small CNC machines.

What advantage do three flutes provide in this design?
Three flutes offer a compromise between robust cutting action and effective chip evacuation, producing a smoother finish and reducing the tendency to chatter during countersinking.

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