Dormer Pramet A110 7.90 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

Meet the Dormer Pramet A110 7.90 mm HSS ST Straight Shank Long Series Drill, DIN 340 — a purpose-built twist drill designed for dependable deep-hole work across a range of materials. With a robust point geometry and a durable steel construction, this drill is built to perform in both handheld and machine drilling applications, making it a staple for metalworking shops and serious DIY setups alike.

• 118° conventional point delivers a strong, self-centering start that’s easy to re-sharpen, helping you achieve clean holes with minimal walking or wandering.
• Steam oxide finish reduces friction and aids chip flow, helping prevent workpiece material from adhering to the cutting edge for smoother drilling.
• Long length series provides increased reach for deeper holes and applications where extended access is required, without sacrificing core drill performance.
• Premium HSS material handles drilling across a wide spectrum of metals—including steel, aluminium, and stainless steel—while maintaining good wear resistance and heat tolerance.
• Versatile straight shank compatibility ensures reliable seating in both common drill chucks and machine spindles, making it suitable for both hand-held and machine-driven drilling tasks.

This drill is purpose-built for professionals who routinely need to pierce deeper into metal with accuracy. The A110 7.90 mm size is ideal for precise hole placement in structural components, fixtures, or enthusiast-grade projects where reach matters as much as cut quality. The combination of a true HSS core, a steady 118° point, and the durable steam-oxide finish translates into consistent performance, repeatable results, and fewer tool changes in busy workstreams.

Practical tips for best results: use a light lubrication or cutting fluid to optimize chip evacuation, especially in longer drills, and maintain a steady feed rate to minimize deflection. When sharpening, preserve the 118° geometry to keep startup performance crisp and predictable. For projects requiring multiple passes, start with a smaller pilot hole to reduce load and improve straightness, then finish with the 7.90 mm drill for the final hole diameter.