Dormer Pramet A110 2.40 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

Meet the Dormer Pramet A110 2.40 mm HSS ST Straight Shank Long Series Drill, a precision-ready drill bit designed for reliability in both handheld and machine drilling. Built to tackle deep holes without compromising edge safety, this DIN 340 drill stands out with thoughtful geometry and durable construction that professionals trust.

Key features that matter in real-world work

• 118-degree conventional point for a robust entry that resists wandering and is straightforward to re-grind when sharpening is needed.
• Steam oxide finish minimizes material sticking to the cutting edge, helping you maintain clean holes and extend drill life.
• Long length series provides increased reach for deeper holes and applications where standard drills can’t reach.
• Premium HSS material delivers reliable performance across a range of materials, including steel, aluminium, and stainless steel, while maintaining sharpness and toughness.
• Straight shank design ensures broad compatibility with common chucks and extensions, offering stable, consistent drilling both by hand and on machines.
• DIN 340 specification guarantees adherence to a recognized standard for geometry and dimensions, promoting interchangeability with other DIN 340 tools.
• 2.40 mm diameter makes this a precision option for intricate holes and fine-tinish drilling tasks.

Why this drill bit makes a difference

In practical terms, the A110 2.40 mm drill is built to deliver predictable performance across materials you encounter daily in fabrication, maintenance, and prototyping. The combination of an aggressive yet controllable 118° point and a steam oxide surface reduces resistance at entry, minimizes chip welding, and supports quick, clean hole formation. The long length design is not just for reach—it also improves rigidity in deep-hole work, helping you avoid deflection and chatter when drilling through tougher sections.

Ideal use cases

• Creating precise through-holes in mild steel, stainless steel, and aluminum where depth is a factor.
• Applications in fabrication, automotive maintenance, and machinery assembly that require deeper drilling without switching tools.
• Projects that demand a dependable, re-sharpenable point with a straight shank for straightforward mounting in standard equipment.

Practical tips for best results

To maximize performance with this HSS drill bit, pair it with appropriate drilling speeds and feeds for the target material. Begin with a smaller pilot hole if drilling through harder metals to minimize deflection, and maintain steady, even pressure to preserve the sharp edge. When sharpening is needed, the 118-degree point geometry simplifies re-grinding, preserving hole accuracy and minimizing edge loss. Use cutting fluid or light lubrication on non-ferrous metals to reduce heat buildup and extend tool life.

Who benefits most

This drill is an excellent choice for machinists, fabricators, and technicians who routinely drill deep holes in a variety of metals. Its long-series design and versatile HSS composition make it a dependable all-rounder for workshops that run both handheld and machine-operated drilling tasks.