Dormer Pramet A940 1.30 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

The Dormer Pramet A940 1.30 mm HSS-E High-Performance Multi-Application Straight Shank Long Series Drill (DIN/ANSI) is built for precision micro-drilling across a range of metals. This micro drill combines a refined geometry with robust materials to deliver dependable holes without the need for frequent tool changes, making it a staple for production and prototype shops alike.

• 130-degree point — a self-centering entry that minimizes wandering and reduces the push force required to start a hole, yielding cleaner starts and tighter tolerances on thin or delicate workpieces.
• Bright finish — engineered to resist chip welding and prevent workpiece material from sticking to the cutting edge, which improves chip evacuation and surface quality on every hole.
• Parabolic flute design — optimized to handle long, deep holes in a single pass. The flute geometry promotes efficient chip removal and reduces clogging, enabling consistent hole diameter at depth.
• Premium HSS-E material — cobalt-enhanced high-speed steel delivers greater wear resistance and red hardness, making it suitable for drilling steel, aluminum, and stainless steel with reliable edge retention.
• Long-series straight shank — extended flute length for deeper holes while retaining steady alignment in standard chucks. The straight shank provides straightforward clamping and dependable rigidity in high-speed applications.
• High-performance with h10 hole tolerance — designed to maintain accuracy at higher speeds and feeds, delivering consistently tight tolerances suitable for precision assemblies.
• DIN/ANSI compatibility — engineered to fit common tool holders and taps into existing machining setups without custom adapters, ensuring smooth interchangeability in busy workshops.
• Multi-application versatility — one drill family crafted to handle diverse materials and thin-to-medium depth holes, reducing the need for multiple dedicated drill bits.

Who benefits most: precision machinists, prototype builders, and production shops that require small-diameter holes with reliable straightness and repeatability. This drill excels in general-purpose metalworking, electronics housings, automotive components, and fixtures where tight hole concentricity and clean entry/exit are critical.

Practical tips for best results: clamp securely to minimize runout, use appropriate cutting fluid or light lubricant to extend tool life, and consider a gentle pecking approach for deep holes to clear chips and prevent binding. Start with moderate speeds and adjust feed to balance surface finish with tool longevity, especially when drilling stainless steel or alloys prone to work hardening.