Dormer Pramet A977 11.00 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK EXTRA LONG SERIES (2) DRILL DIN 1869 / 2

Meet the Dormer Pramet A977 11.00 mm HSS-E High Performance Multi-Application Drill, engineered for serious deep-hole work across a range of materials. This extra-long, straight-shank drill combines precision geometry with robust HSS-E alloy to deliver reliable, straight boreholes in hard-to-reach spaces where standard drills struggle.

Why this drill stands out

• 130° point for self-centering and smooth entry – minimizes wandering on initial contact and reduces the push force required, helping you maintain accuracy from the first cut.
• Bright finish – reduces friction and prevents workpiece material from sticking to the cutting edge, promoting cleaner holes and easier chip evacuation.
• Parabolic flute design – optimized for extra-deep drilling, enabling long reach in a single pass without frequent retractions or chip clogging.
• Premium HSS-E material – built for versatility, capable of drilling a variety of metals including steel, aluminum, and stainless steel with dependable performance and long tool life.
• Extra-long length series – specifically suited for very deep holes and applications where extended reach is essential, reducing the need for secondary drilling operations or multiple tools.
• DIN 1869 / 2 compliance – designed to fit standard holders while maintaining the durability required for industrial use.

Ideal use cases

This drill excels in applications where depth is a constraint and precision is non-negotiable. Think engine blocks, long fixtures, aerospace components, automotive assemblies, and fabrication scenarios that demand deep, straight holes with clean edges. The combination of an 11.00 mm diameter, multi-material capability, and an extra-long reach makes it a dependable choice for shop floors and engineering benches alike.

Practical guidance for best results

• Use appropriate cutting speeds and feeds for the material you're drilling; start with conservative parameters and increase gradually to avoid workpiece chatter.
• Keep the workpiece securely clamped and reduce vibration with proper fixturing to preserve hole straightness at greater depths.
• Whenever possible, use coolant or cutting fluid to manage heat generation and extend tool life, especially when drilling stainless steel or other hard alloys.
• Maintain regular chip evacuation by matching flute design with your drill depth; the parabolic flutes help, but good workpiece drainage matters most in deep drilling.

The image provided shows the Dormer Pramet brand, reinforcing quality craftsmanship and reliable tooling you can trust in demanding metalworking tasks. This single, purpose-built drill is designed to outperform generic solutions in deep-hole drilling across multiple materials—delivering consistent hole geometry, reduced wear, and extended tool life in real-world production settings.