The Dormer Pramet A940 17/64 Inch HSS-E High Performance Multi-Application Straight Shank Long Series Drill (DIN/ANSI) is engineered for operators who demand precision, reliability, and deep-hole capability in metalworking. With a 17/64" diameter, this drill is built to excel across a range of materials and applications without the need for frequent tool changes.

• 130-degree point promotes effortless self-centering and minimizes the initial push force, helping you start holes with confidence and reduce wandering on tough substrates.
• Bright finish reduces material buildup on the cutting edge, improving chip evacuation and creating cleaner hole entrances even in challenging workpieces.
• Parabolic flute design channels chips efficiently, enabling extra-deep holes to be drilled in a single pass and extending tool life by maintaining steady cutting conditions.
• Premium HSS-E material—a cobalt-enriched high-speed steel that delivers excellent toughness and wear resistance across a variety of metals, including steel, aluminum, and stainless steel.
• Long series, straight shank for compatibility with a wide range of chucks and holders, delivering stable, precise cuts in longer reach applications.
• High-performance drilling capability with the ability to maintain quality at higher speeds and feeds, achieving true holes with H10 tolerance and minimizing deviation in demanding setups.
• DIN/ANSI standard design ensures dependable interchangeability with compatible tooling and fixtures across industries.

Ideal for machinists, job shops, and fabrication environments where deep drilling, fast cycle times, and consistent hole quality matter. Use the A940 for automotive fixtures, precision components, and mold-making where reliable hole depth and straightness are non-negotiable. Pair it with appropriate cutting fluids and stable fixturing, set conservative feeds when drilling stainless steel, and ramp up speeds for aluminum to maximize heat management and surface finish.

Compared to standard HSS bits, the HSS-E composition in this drill is designed to resist thermal wear during extended cutting cycles, while the parabolic flute and bright finish work together to reduce chatter and buildup, supporting higher productivity and consistent results across multiple passes.