Dormer Pramet A940 4.30 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

When you need a drill that earns its keep in a busy workshop, the Dormer Pramet A940 4.30 mm HSS-E High Performance Multi-App Straight Shank Long Series Drill is built to deliver clean, accurate holes across a wide range of materials. Engineered for reliability in demanding applications, this is the one tool you reach for when depth, precision, and speed matter.

• 130° point for self-centering and lower push force: The optimized tip geometry starts holes exactly where you intend, reducing wandering and easing entry into tough metals.
• Bright finish to minimize sticking: A smooth cutting edge resists built-up material, helping you maintain a clean cut and extending tool life even in high-speed machining.
• Parabolic flute design for extra-deep holes in one pass: Efficient chip evacuation and enhanced rigidity allow you to reach greater depths without repeated drilling passes.
• Premium HSS-E material for versatility: Ready to tackle steel, aluminium, and stainless steel with consistent performance, heat resistance, and long tool life.
• Long series, straight shank (DIN/ANSI compatible): Designed for a wide range of machines and chucks, providing stability and repeatable hole quality in every job.
• High-speed, high-precision drilling with H10 tolerance: Achieve high-quality, accurate holes even at demanding speeds and feeds, reducing rework and improving throughput.

The A940 drill is ideal for job shops, automotive, and general machining environments where precision drilling of thin or thick materials is required. Its multi-application capability means you can rely on a single drill for varied tasks—from fast pilot holes in steel to clean entry in aluminum and corrosion-resistant stainless steel. The longer reach of the long series gives you the flexibility to drill deep holes without changing tools, while the robust straight shank ensures a secure grip in standard drill chucks.

Practical tips for best results: match cutting speeds and feeds to the material (moderate speeds for steel, slightly slower speeds for stainless to manage heat), use a light lubrication or coolant to extend edge life, and employ a gentle pecking cadence to evacuate chips when drilling deep holes. Start with a sharp center entry to maximize the benefits of the 130° point, then maintain consistent pressure to preserve hole straightness and finish.