Dormer Pramet A940 4.90 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

The Dormer Pramet A940 4.90 mm HSS-E High Performance Multi-Application Straight Shank Long Series Drill is built for precision and versatility in metalworking. With a 4.90 mm diameter, this drill is tailored for clean, accurate holes across a range of materials, while the DIN/ANSI straight shank ensures reliable compatibility with standard toolholders and machines.

• 130° point — designed to self-center at entry and minimize push force, helping you start holes with confidence and reducing driver fatigue during long drilling sessions.
• Bright finish — engineered to minimize material sticking to the cutting edge, improving chip evacuation and reducing surface built-up for smoother hole surfaces.
• Parabolic flute design — optimized for depth, enabling extra-deep holes to be drilled in a single pass with consistent chip removal and reduced clogging.
• Premium HSS-E material — delivers dependable performance across a broad material set, including steel, aluminium, and stainless steel, while maintaining cutting edge integrity for longer life.
• High-performance drilling — capable of maintaining quality and accuracy at higher speeds and feeds, producing holes that meet H10 tolerance for tight dimensional control.
• Long series, straight shank — ideal for deeper hole applications and reach in recessed or complex workpieces, while remaining compatible with a wide range of machines and chucks.

Designed for professional shops and active toolrooms, this drill excels in fabrication, automotive, and general engineering environments where reliable, repeatable hole quality matters. Use it for clean through-holes in steel plates, aluminum extrusions, and stainless components, where precise hole size and smooth finishes are essential. The A940’s combination of 130° point geometry, parabolic flute routing, and HSS-E performance makes it a strong alternative to general-purpose drills when depth, accuracy, and material versatility are priorities.

Practical tips to get the most from the Dormer Pramet A940: start with light lubrication and a steady feed to establish the hole, then increase speed and feed within the material’s tolerance to maximize efficiency; clamp securely to minimize drift; and avoid overheating by selecting appropriate speeds for the material being drilled. This approach helps you achieve consistently aligned, burr-free holes with impressive surface finishes.

Ideal users: machinists, toolmakers, maintenance technicians, and fabrication professionals who require a reliable, multi-material drill for long-hole drilling and accurate hole sizing in DIN/ANSI applications.