Dormer Pramet A110 3.30 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

The Dormer Pramet A110 3.30 mm HSS straight shank long-series drill (DIN 340) is purpose-built for precision metal drilling where reach matters. Designed to deliver clean, accurate holes in a range of ferrous and non-ferrous materials, this drill bit combines a robust 118-degree conventional point with a long flute length for deeper hole applications without sacrificing hole quality or control.

- 118-degree conventional point: Provides a strong, self-centering tip that resists wandering and is easy to re-grind, helping you maintain precise hole location and straightness even after multiple uses. - Steam oxide finish: Reduces material sticking to the cutting edge and enhances chip flow, contributing to smoother drilling, cooler operation, and extended edge life in demanding metals. - Long length series: Optimized for drilling deeper holes and for projects where extra reach is required. The extended flute length improves chip evacuation and reduces the risk of clogging in blind holes. - Premium HSS material: High-Speed Steel handles heat during drilling, enabling reliable performance across steel, aluminium, and stainless steel without frequent tool changes. - Straight shank compatibility: The straight shank design fits a wide range of hand-held drills and machine tool chucks, delivering stable concentricity and minimal runout for consistently accurate holes. - DIN 340 compliance: Built to standard specifications, ensuring dependable interchangeability with other DIN 340 drills and reliable performance in professional settings. Who this is ideal for: - Engineers, machinists, and fabricators needing a compact drill for tight spaces and deep-hole work. - DIY enthusiasts tackling metalworking projects that require precise, repeatable 3.30 mm holes in steel, aluminium, or stainless steel. - Shops seeking a dependable, straight-shank drill that can be used in handheld drills or on CNC/machine tools without special adapters. Use cases and practical tips: - For best results, start with a light pecking cycle to establish the hole center, then advance with steady feeds to avoid-edge chipping. - Use cutting fluid or coolant when drilling steel or stainless steel to manage heat and prolong drill life. - Reserve the long-series drill for tasks where standard-length bits struggle to reach or where deep holes are essential, such as internal features in housings, brackets, or frames. - When re-grinding, preserve the 118-degree point geometry to maintain self-centering performance and hole accuracy. In short, the Dormer Pramet A110 3.30 mm HSS straight shank long-series drill is a purpose-built solution for precise, deep-hole metal drilling. It combines a durable HSS construction, a self-centering tip, smoother chip evacuation, and a long-reach design to handle challenging depths and materials with confidence. Add it to your toolkit for reliable, repeatable results in both handheld and machine-driven drilling workflows.