Dormer Pramet A520 7.50 mm HSS TiN ADX STRAIGHT SHANK STUB DRILL DIN 1897

The Dormer Pramet A520 7.50 mm HSS TiN ADX straight shank stub drill (DIN 1897) is a versatile holemaker designed for use across steel, aluminum, and stainless materials. With its compact stub length and robust HSS core, it delivers dependable performance in tight spots and busy workshops alike.

For quick starts and precision, the 130-degree thinned point helps center the drill with less push force, while the Titanium Nitride coating extends tool life and improves reliability when drilling harder materials. Convex cutting edges further assist chip control, supporting higher speeds and feeds without sacrificing hole quality.

• 130° thinned point for self-centering and reduced push force: The tip geometry guides the drill into the workpiece, reducing wandering and making hole starts easier, even in challenging materials.
• Titanium Nitride coating for longer life: TiN hard coating minimizes wear, extends tool life, and delivers steadier performance when drilling harder metals.
• Convex cutting edges for efficient chip control: The convex edge geometry helps break chips and clears them quickly, enabling higher cutting speeds and feeds with consistent hole quality.

This combination provides reliable, high-precision hole making across common metals, enabling you to complete projects faster with less downtime due to worn tools. The A520's DIN 1897 straight shank ensures secure grip in standard chucks, supporting accurate hole sizes and H9 tolerance for quality results.