Dormer Pramet A520 3.50 mm HSS TiN ADX STRAIGHT SHANK STUB DRILL DIN 1897

The Dormer Pramet A520 3.50 mm HSS TiN ADX Straight Shank Stub Drill (DIN 1897) is a compact, high-precision tool designed for small-diameter holes across steel, aluminium, and stainless steel. With a straight shank that matches standard DIN 1897 tooling, it fits a wide range of machines—from manual drills to CNC setups—delivering reliable, repeatable results in demanding environments.

Key benefits include a 130-degree thinned point for self-centering and reduced entry force, a Titanium Nitride coating to extend tool life and improve performance on harder materials, and convex cutting edges that promote efficient chip control and higher cutting speeds.

• 130° Thinned Point for Self-Centering and Easy Entry: Starts holes accurately with less push force, reducing wandering and improving first-pass hole alignment.
• Titanium Nitride (TiN) Coating for Longer Life: Reduces wear and friction, extending tool life and maintaining sharpness when drilling steel, aluminium, and stainless steel.
• Convex Cutting Edges for Chips and Speed: Aids chip breakage and evacuation, enabling higher speeds and feeds while preserving hole quality.

Together, these features deliver repeatable, high-quality holes with tight tolerances (H9), even at higher speeds and feeds. The drill’s premium HSS composition supports versatile use across common metals, reducing tool changes and downtime while providing reliable performance for engineers, machinists, and hobbyists alike.