Dormer Pramet A940 1.90 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

The Dormer Pramet A940 1.90 mm HSS-E High-Performance Multi-Application Straight Shank Long Series Drill (DIN/ANSI) is built for versatile, precision drilling across a range of materials. This compact, long-series drill combines reliability with a focused design that streamlines your machining workflow.

• 130° point for self-centering and easier entry — reduces the initial push force needed to start the hole, delivering cleaner starts and tighter hole alignment.
• Bright finish keeps the cutting edge clear — minimizes material buildup on the flank, reducing pull-out resistance and improving surface finish on the hole edge.
• Parabolic flute design enables deeper single-pass drilling — efficient chip evacuation and reduced binding when penetrating deeper into the workpiece, ideal for through-holes or deep blind holes.
• Premium HSS-E material — excellent toughness and heat resistance, suitable for drilling steel, aluminum, and stainless steel with consistent performance.
• High-performance drilling with tight tolerances — engineered to sustain high speeds and feeds while delivering accurate hole sizes within h10 tolerance.
• Long-series, straight shank — compatibility with a wide range of drill chucks and holders, delivering rigidity for precision work.

Use cases that benefit from the A940 drill include general-purpose holemaking in steel and aluminum components, precision pilot and through-holes in stainless steel parts, and deep-hole tasks where a single-pass approach saves time. The 1.90 mm diameter is well-suited for small-scale fabrications, electronics enclosures, and fine-tolerance assemblies where hole position and size are critical.

Practical tips for optimal results

• Pair with appropriate cutting fluid or minimal lubrication to extend edge life and maintain chip evacuation, especially at higher speeds.
• Start with a light pecking feed to establish the hole center, then ramp up to the recommended speed and feed to achieve the h10 tolerance without chatter.
• Ensure workpieces are securely clamped to prevent deflection, which can affect hole concentricity at small diameters.
• For deep-hole work, rely on the parabolic flute to sustain chip clearance and reduce cutting pressure during longer drills.

This drill is designed for professionals who require a single tool that can handle multiple materials with reliable dimensional control, from prototype runs to production milling centers. If you need a compact, durable solution for precise micro-holes across steel, aluminum, and stainless, the Dormer Pramet A940 1.90 mm HSS-E High-Performance Multi-Application Straight Shank Long Series Drill is a strategic addition to your toolbox.