Dormer Pramet A520 8.70 mm HSS TiN ADX STRAIGHT SHANK STUB DRILL DIN 1897

The Dormer Pramet A520 8.70 mm HSS TiN ADX Straight Shank Stub Drill (DIN 1897) is a versatile metalworking drill designed for reliable, precise hole creation across a range of materials. With a durable straight shank and a 8.70 mm diameter, it’s suitable for engineers, fabricators, tradespeople, hobbyists, and workshop environments seeking consistent results.

Built from premium high-speed steel with a Titanium Nitride coating, this drill is engineered for longer life and steadier performance even in tougher materials. The 130° thinned point helps with self-centering and reduces the push force required at entry, delivering cleaner starts and better control. Its robust construction combined with a specialized geometry supports reliable drilling in everyday production tasks and more demanding jobs.

• 130° Thinned Point for Self-Centering and Reduced Start-Up Force: Guides entry smoothly, lowers the initial effort needed, and helps you start holes accurately on challenging surfaces.
• Titanium Nitride Coating for Longer Life: Reduces wear and heat buildup, extending drill life and maintaining performance when drilling harder or abrasive materials.
• Convex Cutting Edges for Chip Breakage and Speed: Promotes easy chip control and enables higher cutting speeds and feeds for faster, more consistent hole production.

Designed for broad material compatibility, this drill can handle steel, aluminium, and stainless steel while delivering high-quality, accurate holes with h9 tolerance. The combination of TiN-coated HSS, a self-centering point, and chip-friendly convex edges translates to smoother workflows, fewer reworks, and dependable results across routine and demanding drilling applications.