The Dormer Pramet A940 5.90 mm HSS-E High Perf Multi-App Straight Shank Long Series Drill DIN/ANSI is built for serious metalworking where deep holes and precise tolerances matter. Designed for versatile, high-speed performance, this drill is a reliable workhorse for professional shops and demanding projects alike.

• 130° point for self-centering: The precise point geometry guides the bit into the workpiece with minimal wandering, reducing push force and delivering accurate starts every time.
• Bright finish: A smooth, non-stick edge minimizes built-up material on the cutting edge, helping maintain clean holes and reducing dwell time caused by edge buildup.
• Parabolic flute design for deep holes: Engineered to evacuate chips efficiently, this flute profile enables deeper holes to be drilled in a single pass, improving productivity and reducing tool wear.
• Premium HSS-E material: Heat- and wear-resistant high-speed steel with enhanced properties makes it suitable for drilling a wide range of materials, including steel, aluminum, and stainless steel, while maintaining consistent hole quality.
• Multi-app, long-series with straight shank: The long reach and straight shank provide compatibility with common drill chucks and holders, enabling reliable alignment and stable performance in extended drilling operations.
• High-speed, high-accuracy performance: Capable of producing high-quality, accurate holes at elevated speeds and feeds, with tight tolerance (h10) to meet precise engineering requirements.
• DIN/ANSI compatibility: Built to standard dimensions for easy interchangeability in a wide range of machines and setups, reducing setup time and ensuring reliable fitment.

Ideal use cases: machining shops and fabricators tackling steel, stainless steel, and aluminum components, automotive or aerospace fixtures, and any project requiring deep, clean holes with tight tolerances. The A940 is especially effective when you need one drilling pass to depth, minimizing tool changes and cycle times.

Practical tips for optimal results:

• Use appropriate cutting fluid or coolant to control heat and extend tool life during high-speed drilling.
• Start with a light pilot hole if the workpiece is particularly hard or if initial guidance is difficult.
• Keep feeds and speeds within recommended ranges to avoid overheating, which can affect hole quality and the HSS-E edge life.
• For very deep holes, consider peck drilling in controlled intervals to assist chip evacuation and prevent clogging.
• Inspect the drill before use for any signs of wear, and replace if the cutting edge shows chipping or dullness to maintain H10 hole tolerance.