Dormer Pramet A110 4.20 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

When your project demands dependable depth and clean entry in metal, the Dormer Pramet A110 4.20 mm HSS straight shank long-series drill is built to perform. Designed for precise holes with minimal wandering, this drill blends robust construction with practical engineering to handle challenging tasks in a range of materials.

• 118-degree conventional point: A strong, self-centering tip that bites quickly into workpieces and stays easy to re-shape when needed, reducing downtime on the bench or in the machine shop.
• Steam oxide finish: A friction-reducing surface that helps prevent workpiece material from sticking to the cutting edge, promoting smoother chip flow and longer edge life.
• Long length series: Increased reach for deep-hole drilling and applications where access is limited, while maintaining rigidity and control to minimize deflection.
• Premium HSS material: High-speed steel engineered for versatility, capable of drilling steel, aluminium, and stainless steel with reliable performance and wear resistance.
• DIN 340 straight shank: Standardized shank compatibility that fits a wide range of chucks and collets, making it a versatile choice for both handheld and machine drilling.

Use cases this drill excels at include creating deep pilot holes in steel frames, drilling through aluminium components to assemble lightweight structures, and tackling stainless steel workpieces where edge retention matters. Its long-series design is especially valuable for pocketed or recessed areas where a shorter bit simply can’t reach, and the regrindable point helps maintain accuracy over multiple through-holes.

Practical tips for best results: - Apply a light cutting fluid when drilling steel or stainless to optimize edge life and chip evacuation. - Use a steady, moderate feed and avoid aggressive plunging to minimize deflection on longer holes. - When regrinding, restore the 118° point carefully to preserve cutting efficiency and hole quality. - Inspect the edge regularly for wear; the steam oxide finish aids performance but isn’t a substitute for timely maintenance.

Ideal for professionals and hobbyists alike who require a single, reliable drill for handheld use or machine drilling, capable of delivering clean holes in a variety of metals without frequent tool changes.