Meet the Dormer Pramet A940 11.50 mm HSS-E High Performance Multi-Application Straight Shank Long Series Drill (DIN/ANSI). Designed for serious metalworking tasks, this drill blends robust HSS-E substrate with a precision 130° point to deliver self-centering starts and reduced starting thrust—so you get cleaner holes with less effort from the very first bite.

Why this drill stands out

Bright finish technology minimizes material sticking to the cutting edge, helping chips evacuate smoothly and reducing workpiece snagging. The distinctive parabolic flute design channels chips efficiently, enabling deeper holes in a single pass without compromising hole quality or tool life. Coupled with premium HSS-E material, this drill excels across a broad material spectrum—from steel and aluminum to stainless steel—delivering consistent performance even at higher speeds and feeds.

Performance you can rely on

• Diameter and compatibility: 11.50 mm drill with straight shank, designed to fit standard drill chucks and adapters that support DIN/ANSI long series tools.
• Hard-wearing material: Premium HSS-E composition offers superior wear resistance and toughness, extending tool life in demanding drilling applications.
• Centering and feed efficiency: The 130° point provides self-centering action, reducing push force and enabling smoother starts, especially in difficult-to-center workpieces.
• Chip management: Bright finish plus parabolic flute geometry work together to improve chip flow, minimizing clogging and thermal buildup.
• Precision holes: Engineered to maintain tight tolerances (H10) at high speeds, giving you accurate, ready-to-tab holes for downstream operations.

Ideal use scenarios

This drill is a versatile workhorse for machine shops, fabrication environments, and maintenance departments that routinely need reliable high-precision holes in a variety of metals. Use it for through-holes and blind holes in steel frames, aluminum housings, or stainless components where hole accuracy and surface finish matter. Its long-series design provides the reach needed for deeper drilling without sacrificing rigidity or alignment, making it a practical choice for multi-step assemblies and tool-ready fixtures.

Practical tips for optimal results

• Match cutting speed and feed rate to material type—higher speeds with controlled feeds for aluminum, slightly lower speeds with steady feeds for steels and stainless.
• Use proper lubrication or coolant to minimize heat buildup and extend tool life, especially on tougher metals.
• Begin with a light pilot hole if you’re working with hard-to-guide workpieces to enhance centering and reduce wandering.
• Ensure the drill is secured in a rigid chuck or toolholding system to maximize the straight-shank advantages and maintain concentricity.

Whether you’re building durable automotive fixtures, fabricating machinery components, or performing routine maintenance drilling, the Dormer Pramet A940 drill delivers dependable depth, clean edges, and consistent hole quality—shot after shot, pass after pass.