Upgrade your drilling performance with the Dormer Pramet A940 31/64 Inch HSS-E High Performance Multi-Application Straight Shank Long Series Drill. Engineered for precision and longevity, this drill delivers consistently clean, true holes across a range of materials—from steel to aluminium and stainless steel—even at demanding speeds and feeds.

Why the A940 stands out

• 130° point geometry promotes self-centering starts and lowers the required push force, reducing wandering and ensuring accurate hole initiation every time.
• Bright finish minimizes built-up edge and helps chips evacuate smoothly, resulting in fewer recuts and a nicer surface finish.
• Special parabolic flute design enables deeper holes in a single pass, boosting productivity when drilling long cavities or through-holes without interruptions.
• Premium HSS-E material provides exceptional hot hardness and wear resistance, making it suitable for a broad spectrum of workpiece materials—from steel to stainless steel to aluminium.
• Long-series, straight shank format ensures compatibility with a wide range of chucks and fixtures, delivering stability for extended reach drilling in tight or recessed areas.
• High-precision performance achieves tight H10 hole tolerance, supporting accurate fits for pins, fasteners, and assemblies where precision matters most.

Practical benefits in real-world work

The A940 drill is purpose-built for shops that demand reliability under higher-speed operations and for projects where hole accuracy and depth matter. The combination of the 130° point, parabolic flute, and HSS-E substrate translates into less tool wear, fewer tool changes, and better finish on drilled surfaces. It’s especially effective for through-holes and deep-hole drilling where conventional bits struggle with chatter or premature wear.

Ideal applications

• Fabrication and assembly tasks involving steel, aluminium, or stainless steel components.
• Automotive repair, machinery maintenance, and lightweight manufacturing that require precise, repeatable holes.
• Long-hole drilling scenarios where depth is a challenge and one-pass drilling saves time.

Tips for best results

To maximize performance, pair the drill with appropriate speeds and feeds for your material, and use a light lubricant or coolant to control heat. Maintain a steady, positive feed and minimal pecking to keep the parabolic flute aligned with the cut. With the 130° point and premium HSS-E construction, you’ll notice improved start guidance, cleaner hole edges, and longer tool life even under demanding workshop conditions.