Dormer Pramet A520 6.40 mm HSS TiN ADX STRAIGHT SHANK STUB DRILL DIN 1897

The Dormer Pramet A520 6.40 mm HSS TiN ADX Straight Shank Stub Drill DIN 1897 is a versatile, high-performance drilling tool designed for reliable hole creation across a range of materials. With a straight shank and a DIN 1897 standard, this 6.40 mm stub drill is ideally suited for production work, maintenance, and workshop projects where consistent hole quality matters.

Designed for a wide audience—from engineers and buyers to tradespeople and hobbyists—the A520 combines durability with easy, predictable performance. Its 130° thinned point aids self-centering and reduces the push force required, the Titanium Nitride coating extends tool life and improves performance on harder materials, and the convex cutting edges help break chips and support higher cutting speeds and feeds.

• 130° Thinned Point for Self-Centering: Helps start holes precisely and reduces the effort needed to enter the material, improving control and reducing fatigue during long drilling tasks.
• TiN Coating for Longevity: The Titanium Nitride coating increases tool life and wear resistance, delivering better performance when drilling harder materials across steel, aluminium, and stainless steel.
• Convex Cutting Edges for Efficient Cutting: Promotes easier chip breaking and removal, enabling higher cutting speeds and feeds for faster, more productive hole production.

With premium HSS material and a geometry optimized for reliability, this drill delivers high-quality, accurate holes even at higher speeds and feeds, achieving h9 hole tolerance. It’s a dependable choice for professionals and DIYers who demand consistent results, reduced downtime, and smooth operation across a variety of drilling tasks.