Dormer Pramet A110 1.75 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

The Dormer Pramet A110 1.75 mm HSS ST Straight Shank Long Series Drill (DIN 340) is built for precise, reliable performance when you need to reach deep into material without sacrificing edge life. This high-speed steel drill bit combines a robust cutting geometry with engineering that stands up to demanding machining environments—from workshop hand drilling to automated setups.

• 118° conventional point — a strong, self-centering tip that starts cleanly and resists wandering. The point is designed for predictable re-grinding, helping you extend tool life without compromising accuracy.
• Steam oxide finish — a protective coating that minimizes chip adhesion and workpiece material build-up on the cutting edge. This reduces friction, improves chip evacuation, and enhances surface finish in a range of metals.
• Long length series — engineered for deeper holes and applications where extended reach is essential. The extra length maintains rigidity while delivering consistent cutting performance in recesses, blind holes, and challenging geometries.
• Premium HSS material — designed for versatility across common engineering metals. Whether you’re drilling steel, aluminium, or stainless steel, this drill bit maintains hardness, toughness, and dimensional stability under typical shop conditions.
• Straight shank (DIN 340) — compatible with a wide range of hand-held drills and machine spindles, offering reliable clamping and alignment for smooth operation and reduced runout in precision work.
• Versatile and dependable — a single drill bit that performs well in multiple setups, from portable drilling to fixed tooling cells. Ideal for fabrication, maintenance, and light production environments where reach and accuracy matter.

Use cases and practical insights:

• Deep-hole drilling in steel or aluminum where standard-length bits would require multiple passes or risk deflection. The long series delivers consistent chip clearance and steady feed, helping you achieve clean, accurate holes.
• Machining stainless steel or alloyed metals where edge retention and heat resistance are critical. The A110 geometry balances speed with life, enabling efficient progress without frequent tool changes.
• Hand-held drilling or CNC/machine operations that demand repeatability and stable alignment. The straight shank ensures predictable engagement with collets and chucks for reliable performance.

Why this drill stands out against alternatives:

• The combination of an 118° point and steam oxide finish provides a practical edge that’s easy to re-sharpen and maintain, delivering consistent starts and reduced pull-out in tough materials.
• The extended length minimizes the need for jury-rigged setups when clearance is limited, while preserving rigidity to minimize chatter and deflection during deep-hole work.
• Full material versatility means you don’t need separate bits for different metals—switch between steel, aluminum, and stainless with confidence and predictable results.

Pro tips for optimal results:

• Match speeds and feeds to the material; start with conservative parameters and adjust as the cut progresses to avoid overheating.
• Use a light, steady feed and adequate lubrication or cutting fluid to maximize edge life and finish quality, especially in stainless or alloy steels.
• Secure the workpiece firmly and ensure proper clamping to maintain straightness and prevent bit deflection, particularly when drilling deep holes.
• When re-sharpening, preserve the 118° point geometry to maintain reliable entry and cutting performance.

The Dormer Pramet A110 1.75 mm HSS Straight Shank Long Series Drill is the reliable choice for professionals who need depth, precision, and flexibility in a single drill bit. It’s ready for a broad spectrum of metalworking tasks—from quick repairs to more demanding fabrication projects.