Dormer Pramet A940 1.20 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

Engineered for micro-drilling precision, the Dormer Pramet A940 1.20 mm HSS-E High Performance Multi-App Straight Shank Long Series Drill (DIN/ANSI) is built to perform across materials with consistent, high-quality results. This compact drill is purpose-built for tight-tolerance work where every micron matters and deep-hole access is required in a single pull of the trigger.

• 130° point for effortless starting and self-centering. The geometry reduces the initial push force, guiding the bit cleanly into the workpiece and helping to prevent wandering on small-diameter holes.
• Bright finish that minimizes material sticking. A smooth cutting edge reduces built-up edge and chip welds, producing smoother holes and easier tool cleanup.
• Parabolic flute design for deep-hole capability. This specialized flute geometry promotes efficient chip evacuation, enabling extra-deep holes in a single pass without sacrificing hole quality.
• Premium HSS-E material for versatile performance. Optimized to cut through steel, aluminium, and stainless steel with reliable wear resistance and long tool life.
• Long series, straight shank with universal DIN/ANSI compatibility. Perfect for machines and setups that require a robust, rigid shank and broad adaptability across standard tooling interfaces.
• High-performance drilling with precise H10 hole tolerance. Achieve tight tolerance holes at higher speeds and feeds, making this drill a dependable choice for fabrication, automotive, and precision-machining applications.

This multi-application drill shines in scenarios where you need a single tool to handle through-holes in various materials without swapping bits. It’s ideal for electronics enclosures, lightweight structural parts, and small-diameter features in fabrications where consistent hole quality, repeatable diameter control, and deep-hole capability matter most. When used in high-speed, high-feed environments, the A940 maintains cutting stability and delivers reliable concentricity, helping to minimize secondary operations.

Practical tips for best results:

• Clamp workpieces securely and align the drill to maintain straight, true holes—especially important for small-diameter drills.
• Use appropriate lubrication or cooling to manage heat buildup and extend drill life when drilling non-ferrous alloys or stainless steel.
• Start at a light feed to establish entry, then increase speed and feed as the material yields to cutting action while monitoring chips for consistency.
• Validate hole depth and tolerance with a simple go/no-go gauge to ensure you’re staying within the H10 specification.