Dormer Pramet A520 7.00 mm HSS TiN ADX STRAIGHT SHANK STUB DRILL DIN 1897

The Dormer Pramet A520 7.00 mm HSS TiN ADX straight shank stub drill (DIN 1897) is a versatile 7 mm drill bit designed for fast, accurate metal drilling across a range of materials. Built with premium HSS and a Titanium Nitride coating, it delivers reliable hole quality for steel, aluminium, and stainless steel in everyday shop and production environments.

With a 130° thinned point, this drill starts cleanly and self-centers, reducing the push force required and helping prevent wandering on entry. The TiN coating extends tool life and enhances performance on harder materials, while convex cutting edges promote smoother chip break and higher cutting speeds and feeds for efficient drilling and consistent results, aligning with h9 hole tolerance.

• 130° thinned point for self-centering and reduced push force: Starts holes cleanly with less effort, minimizing wandering and improving accuracy on a variety of metals.
• Titanium Nitride (TiN) coating for longer life: Reduces wear and friction, extending the drill’s service life and maintaining sharpness through more holes per bit.
• Convex cutting edges for faster drilling: Aids chip break and evacuation, enabling higher speeds and feeds while preserving hole quality and consistency.

This high-performance HSS drill bit is a reliable choice for professionals and hobbyists alike, delivering dependable, repeatable holes with minimal downtime and straightforward setup in everyday machining tasks.