Dormer Pramet R520 4.70 mm CARBIDE TiN CDX STRAIGHT SHANK STUB DRILL DIN 6539

The Dormer Pramet R520 4.70 mm carbide stub drill is a precision drilling solution built for engineers, fabricators, tradespeople, and DIY enthusiasts alike. Its compact straight shank and DIN 6539 standard make it compatible with a wide range of chucks and collets, delivering reliable performance in everyday metalworking tasks. With a 4.70 mm diameter, it’s ideal for clean, accurate holes in a variety of materials.

This drill combines smart design with robust materials to optimize your workflow. The 130 degree point aids self-centering, reducing push force and helping you start holes cleanly. A Titanium Nitride (TiN) coating extends wear life and sustains performance when drilling harder materials. Convex cutting edges further improve chip evacuation and enable higher cutting speeds and feeds, so you can work more efficiently across different metals, including steel, aluminium, and stainless steel.

• 130° point for self-centering and reduced push force: Starts holes quickly and accurately with less effort, improving first-pass accuracy and reducing deflection.
• TiN coating for longer life and better performance: Increases tool life and maintains smoother cutting in harder materials, delivering more reliable results over time.
• Convex cutting edges for efficient chip control: Makes chip break and evacuation easier, enabling higher speeds and feeds without compromising hole quality.

With premium carbide and a high-precision design, the R520 delivers consistent, high-quality holes (h8 tolerance) across ferrous and non-ferrous materials. It’s a dependable choice for demanding applications in workshops, manufacturing, and field projects, offering confidence, reduced downtime, and repeatable results every time you drill.