Dormer Pramet A940 7.50 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

Meet the Dormer Pramet A940 7.50 mm HSS-E High Performance Multi-Application Straight Shank Long Series Drill (DIN/ANSI). Engineered to deliver consistent hole quality across a range of materials, this drill is built for reliability in demanding production environments and versatile enough for general machining tasks that demand precision.

• 130° point for self-centering and reduced entry force — start holes with minimal wandering, even in challenging workpieces, helping you maintain alignment from the first cut.
• Bright finish — a sleek, glare-free edge that minimizes sticking and built-up material on the cutting edge, promoting smoother drilling and easier deburring.
• Parabolic flute design — optimized for deeper holes, enabling longer drilling depth in a single pass and reducing the need for multiple setups or tool changes.
• Premium HSS-E material — blends toughness and heat resistance for longevity when drilling steel, aluminum, and stainless steel, even at higher speeds.
• Long series with straight shank (DIN/ANSI) — compatible with standard chucks and collets, delivering stable, precise hole placement without secondary alignment issues.
• High-speed, high-feed capability with h10 tolerance — ensures accurate hole dimensions at elevated feeds and speeds, supporting tight tolerances and repeatable results.

This drill shines in production runs and shop-floor tasks where dependable hole quality matters. Use it for through-hold, blind-hole, and deep-hole drilling across ferrous and non-ferrous materials, knowing you can rely on clean entry, straight holes, and consistent dimensions from start to finish. The A940’s geometry is designed to maximize material removal efficiency while maintaining control, reducing cycle times and tool wear compared with conventional drill bits.

Practical tips for best results:

• Match feeds and speeds to the material being drilled to maximize life and maintain h10 tolerance.
• Use appropriate workholding and peck drilling techniques for deep-hole applications to clear chips and prevent clogging.
• Apply coolant or lubrication as needed to manage heat in stainless and alloy steels, extending tool life.