Dormer Pramet A110 6.40 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

Meet the Dormer Pramet A110 6.40 mm HSS straight shank long series drill (DIN 340) — a purpose-built tool for deep-hole drilling that combines reliability, reach, and versatile metalworking performance in one robust package. Designed for professional use, this drill delivers precision from the first cut to the final chip.

• 118-degree conventional point — delivers a strong, stable entry and predictable hole geometry. The point is easy to re-sharpen, so you can maintain accuracy and reduce tool downtime in busy workshops.
• Steam oxide finish — minimizes build-up of workpiece material on the cutting edge, reducing friction and chatter. This helps extend edge life and maintain clean, true holes across repeated cycles.
• Long length series — engineered for drilling deeper holes and reaching into recessed or crowded workpieces. The extended reach keeps your drill stable while maintaining cutting efficiency in confined spaces.
• Premium HSS material — a versatile choice for drilling a wide range of metals, including steel, aluminum, and stainless steel. The high-speed steel composition provides good heat resistance and wear life for everyday fabrication tasks.
• Straight shank — compatible with standard chucks and machine spindles, offering reliable, true runout and easy seating in hand-held drills and workshop machines alike.
• DIN 340 compliance — built to exacting standards for interchangeability and consistency across professional tool inventories, so you can trust predictable performance each time you drill.
• Versatile application — whether you’re hand drilling, using a drill press, or mounting in a machine, this drill handles a variety of metals and thicknesses with steady results.

Use cases and practical scenarios

• Deep-hole drilling in steel frames or structural components where access is limited or space is constrained.
• Through-holes in aluminum housings and enclosures requiring clean entry and smooth chip evacuation.
• Prepping stainless steel fixtures and brackets where reliable edge life and consistent hole dimensions matter.
• General-purpose metalworking tasks in workshops that demand a single drill that can handle multiple materials without changing tools frequently.

Tips for best results

• Apply light to moderate cutting fluid or coolant to manage heat and extend tool life, especially when drilling stainless steel or aluminum.
• Feed at a steady rate and avoid forcing the drill. Let the 118-degree point find the entry and establish the hole geometry gradually.
• For deep holes, consider peck drilling to clear chips and reduce binding, pausing to re-lubricate if needed.
• Keep chips flowing away from the cutting edge to prevent workpiece material from sticking and to minimize friction.
• Inspect the drill after use and re-sharpen when the edge shows signs of dullness to maintain precise hole dimensions.

Durable, reliable, and ready for a range of metalworking tasks, the Dormer Pramet A110 6.40 mm HSS straight shank long series drill is a practical choice for workshops that value reach without sacrificing performance. Its combination of a robust point, wear-resistant finish, and material versatility makes it a dependable workhorse for both handheld and machine drilling applications.