Dormer Pramet A940 5/64 Inch HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

Meet the Dormer Pramet A940 5/64 Inch HSS-E High Performance Multi-Application Straight Shank Long Series Drill (DIN/ANSI). Designed for versatility in demanding metalworking tasks, this drill delivers reliability across a range of materials and applications without swapping tools.

Why this drill stands out

• promotes inherent self-centering as you start a hole, reducing initial wandering and the push force required to begin cutting. The result is faster, more accurate starts with less operator effort.
• helps minimize built-up edge by reducing material adhesion to the cutting edge, improving chip flow and reducing sticking in reactive workpieces.
• channels chips efficiently and enables deeper holes in a single pass. This means you can drill longer through-holes or reach into recessed areas with less need for pecking or tool changes.
• combines high-speed steel with enhanced alloying, delivering better wear resistance and heat resistance when drilling a variety of metals, including steel, aluminum, and stainless steel.
• geometry provides broad compatibility with standard tool holders and machine setups, making it a go-to drill for a wide range of projects where a single tool must perform well across materials and thicknesses.
• ensures you can expect consistent, high-quality hole dimensions even at higher speeds and feeds, supporting clean fits for fasteners and components.

Ideal use cases

Perfect for shop floors and job sites where a single drill must handle multiple tasks. Use the A940 for drilling through mild and alloy steels, aluminum components, and stainless steel workpieces. The parabolic flute design shines when drilling deeper holes or working with materials that generate longer chip paths, helping maintain precise hole geometry from start to finish.

How it compares to traditional drills

Compared to standard straight-flute drills, the A940’s parabolic flute geometry improves chip evacuation and reduces the risk of clogging during deeper holes. The 130-degree point minimizes walk at the start, while the bright finish and premium HSS-E composition provide more consistent wear resistance and edge life under demanding cutting conditions. For operations that demand precision at higher speeds and feeds, this drill maintains H10 tolerance without compromising surface finish or hole straightness.

Practical tips for maximum performance

• Match your spindle speed and feed rate to the material: lighter materials benefit from higher speeds with moderate feeds, while tougher steels respond well to balanced feeds and appropriate lubrication.
• For deeper holes, rely on the parabolic flute to maintain chip clearance; pause occasionally to clear chips and prevent binding.
• Use a compatible clamping setup to keep the drill perfectly aligned; a firm center support reduces deflection and improves hole accuracy.
• Apply a suitable cutting fluid or coolant when drilling ferrous materials to extend tool life and improve finish quality.
• Consider pilot drilling for challenging metals to establish a precise starting point before using the A940 for the final hole depth.

Engineered for durability, accuracy, and versatility, the Dormer Pramet A940 drill is your reliable partner for multi-material projects, long-reach holes, and high-precision work in DIN/ANSI environments.