Dormer Pramet A940 1.40 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

Meet the Dormer Pramet A940 1.40 mm HSS-E High Performance Multi-Application Straight Shank Long Series Drill — a precision tool built for small-diameter, high-accuracy holes across a range of metals. With a compact 1.40 mm diameter, this drill delivers clean starts and dependable consistency in demanding applications.

• 130° point for self-centering and reduced push force — delivers a precise start and minimizes wandering, ensuring accurate hole location from the first cut.
• Bright finish — minimizes built-up edge and prevents workpiece material from sticking to the cutting edge, promoting smoother drilling and longer tool life.
• Parabolic flute design — engineered to drill extra deep holes in a single pass, reducing tooling changes and boosting productivity on demanding deep-hole tasks.
• Premium HSS-E material — delivers toughness and heat resistance for reliable performance across a variety of materials, including steel, aluminium, and stainless steel.
• High-performance drilling with h10 tolerance — optimized for high speeds and feeds while maintaining tight hole tolerances, ideal for precision components and assemblies.
• DIN/ANSI straight shank — broad compatibility with existing chucks and collets, simplifying tool logistics in workshops and production lines.
• Long series length — designed for deeper hole applications without sacrificing rigidity or accuracy, making it a versatile choice for complex parts.

Ideal use cases include micro-machining, precision enclosures, automotive components, dies and tools, and electronics housings where small-diameter holes must be drilled cleanly and consistently at high speeds.

Compared to standard drills, the A940 combines a fine diameter, advanced flute geometry, and a bright-edge finish to reduce setup time, extend tool life, and improve hole concentricity at elevated speeds. It’s a practical upgrade for workshops that demand dependable, repeatable results from every small-diameter hole.

For optimal results, match the spindle speed and feed rate to the material and depth, and ensure proper chip evacuation to maintain cutting efficiency on deeper holes.