Dormer Pramet R520 6.40 mm CARBIDE TiN CDX STRAIGHT SHANK STUB DRILL DIN 6539

The Dormer Pramet R520 6.40 mm carbide stub drill with a straight shank (DIN 6539) is designed for reliable, precise holemaking across a wide range of materials—from steel and aluminium to stainless steel. With a robust carbide body and a 6.40 mm diameter, it delivers clean entry and consistent hole quality at higher speeds and feeds.

Its 130-degree point helps with self-centering and reduces the push force required, while a Titanium Nitride coating extends tool life and improves performance when drilling harder materials. Convex cutting edges aid chip control and removal, enabling higher cutting speeds and feeds while maintaining the hole’s accuracy (h8 tolerance).

• 130° Self-Centering Point: Ensures precise starts and reduces push force, minimizing wandering on start-up and improving first-pass hole quality.
• Titanium Nitride (TiN) Coating: Extends drill life and maintains sharpness, delivering reliable performance when drilling harder materials.
• Convex Cutting Edges: Promote efficient chip breaking and evacuation, enabling faster cutting speeds and feeds while preserving hole accuracy (h8 tolerance).

With the R520 6.40 mm carbide drill, you gain faster, more dependable holemaking that reduces downtime and rework. The combination of self-centering geometry, wear-resistant coating, and efficient chip control translates to smoother operation, higher throughput, and consistent, high-quality holes across common engineering materials.