Meet the Dormer Pramet A940 9.80 mm HSS-E High Performance Multi-Application Straight Shank Long Series Drill—built for dependable, one‑pass drilling across demanding materials. This isn’t a niche tool for a single job; it’s a versatile workhorse designed to deliver repeatable results in steel, aluminum, and stainless steel with every hole.

Key features that drive real-world outcomes

• 130° point for self-centering and reduced push force: The sharp, acute point helps your drill start on center and minimizes wandering, so you get cleaner starts and straighter holes with less effort.
• Bright finish to prevent sticking: The polished surface reduces built‑up edge and material adhesion at the cutting edge, resulting in smoother chip formation and fewer dragging incidents during high-speed cuts.
• Parabolic flute design for deep-hole drilling: The optimized flute geometry channels chips efficiently, enabling longer, deeper holes in a single pass without frequent retractions or chip buildup.
• Premium HSS-E material for multi-material performance: With cobalt-enhanced HSS-E, this drill maintains cutting efficiency across steel, aluminum, and stainless steel, delivering dependable wear resistance and durability.
• High-speed, high-feed capability with tight tolerances: Designed to produce high-quality, accurate holes even at elevated speeds and feeds, achieving H10 hole tolerance for trustworthy dimensional control.
• Long-series, straight-shank design for universal compatibility: The straight shank fits a wide range of chucks and collets, and the long series geometry supports longer reach in production setups while maintaining rigidity.
• DIN/ANSI compliant for reliable interchangeability: Built to standard sizes and interfaces, ensuring seamless integration with common tooling catalogs and machine tool setups.

Who benefits most: machinists, toolmakers, and job shops that need a single drill capable of handling diverse materials and demanding applications—from precision pilot holes in stainless to through-holes in alloyed steel. The A940 is ideal for production runs where consistent hole quality, fast cycle times, and predictable tool life matter most.

Practical use tips

• Match speed and feed to the material: higher speeds with controlled feeds for aluminum, and slightly slower feeds for steel and stainless to preserve edge life.
• Use light lubrication or cutting oil on tougher metals to reduce heat buildup and extend the cutting edge life.
• Keep workholding secure and avoid heavy pecking; for deep holes, advance gradually, then withdraw to clear chips and prevent clogging.
• Inspect the flute condition regularly; a sharp, clean flute maintains performance across long drilling sequences.

For operators who demand reliable hole quality, tight tolerances, and a drill that can go the distance across multiple materials, the Dormer Pramet A940 9.80 mm HSS-E High Performance Multi-Application Straight Shank Long Series Drill is a dependable choice. It pairs a robust design with practical features that translate directly into productivity in milling, drilling, and assembly workflows.