Dormer Pramet A110 12.00 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

Meet the Dormer Pramet A110 12.00 mm HSS ST Straight Shank Long Series Drill DIN 340—built for serious metalworking where reach and reliability matter. This long-series drill balances robust cutting performance with the versatility you need for deep holes, thick materials, and challenging workpiece geometry.

• 118° conventional point delivers a strong, self-centering start that reduces wandering and produces cleaner holes. The geometry is designed for easy re-grinding, so you can extend the life of the tool with minimal downtime.
• Steam oxide finish minimizes friction and prevents workpiece material from sticking to the cutting edge, promoting smoother chip flow and steadier hole entry.
• Long length series provides extended reach for deep-hole drilling, through-holes, or pockets that standard bits can’t access—ideal for thick materials, assemblies, or constrained spaces.
• Premium HSS material combines toughness and wear resistance, making it suitable for drilling a variety of metals, including steel, aluminum, and stainless steel, with dependable performance and longer life between resharpening.
• Straight shank DIN 340 design ensures reliable grip in standard chucks and collets, delivering consistent rigidity and concentricity in both handheld and machine drilling setups.
• Versatile application this drill excels across a broad range of metalworking tasks—from fabrication and repair to automotive and construction shop work—where accurate deep-hole drilling is essential.

Use cases and practical insights

• Ideal for drilling deep holes in steel structures, aluminum extrusions, and stainless components where access is limited or hole depth exceeds standard bit reach.
• For best results, start with a light touch to establish the entry point, then feed steadily to maintain a clean cut. Use appropriate cutting fluid or coolant to dissipate heat and extend tool life.
• Keep workpiece secure with a stable setup or vice to prevent deflection and ensure hole accuracy. Regularly inspect the bit for wear and re-grind the point as needed to maintain sharpness.
• Pair with compatible holders and machines that can take advantage of the long length without sacrificing rigidity—this minimizes deflection and improves hole straightness.

Who this is for

• Machinists and fabricators who require deeper holes without swapping between multiple drill lengths.
• Workshop professionals tackling thick components, frames, housings, and hydraulic or pneumatic assemblies.
• Hobbyists and DIY enthusiasts seeking a durable, re-grindable HSS drill that performs reliably across common metals.

Durable, versatile, and designed for practical deep-hole drilling, the Dormer Pramet A110 12.00 mm HSS ST Straight Shank Long Series Drill DIN 340 delivers consistent performance when reach and precision are non-negotiable.