Somta Long Series Drill - HSS-E Parabolic Flute - 1.8mm

Meet the Somta Long Series Drill — a precision tool built for deep-hole demanding work. This small-diameter bit, at 1.8mm, is engineered to reach through thick stock with consistent, clean results, making it a reliable choice for metalworking projects that require a precise, deep hole.

Why this drill stands out

• Long-series design for deep-hole drilling: The extended length enables you to reach through substantial material while preserving hole accuracy and concentricity, reducing the need for multiple setups or secondary operations.
• HSS-E construction for durability: Made from High-Speed Steel-E, this bit combines toughness and heat resistance to withstand demanding drilling tasks without rapid wear, even when cutting tougher metals.
• Parabolic flute geometry for superior chip evacuation: The parabolic flute efficiently clears chips away from the cutting edge, minimizing clogging and lower cutting forces. That means smoother starts, steadier feeds, and less stress on your spindle during extended drilling sessions.
• Sharp cutting edges and precise hole quality: The geometry is optimized for clean, round holes with tight tolerances, reducing the need for rework and delivering consistent results project after project.
• Friction and heat management: The flute design reduces friction and heat buildup, helping extend tool life and maintain edge integrity even under prolonged use in metalwork

This drill is ideal for shop floors and fabrication environments where deep-hole accuracy matters. The 1.8mm diameter is perfect for precision pilot holes, aligned fasteners, or delicate pass-through work on metal assemblies. Whether you’re drilling into steel, aluminum, or other common metals, the Somta Long Series Drill delivers dependable performance with each pass.

Practical use cases

• Deep-through holes in thick metal plates where standard bits struggle to reach target depth
• Machining fixtures or housings that require precise, small-diameter holes
• Fixture alignment holes and fastener passages that demand clean finishes

Pro tips for best results: secure the workpiece firmly, use appropriate cutting fluid, and select feeds and speeds that suit HSS-E tools. Let the parabolic flute do the work by maintaining a steady, moderate feed to maximize chip clearance and minimize heat buildup. Regularly inspection the tip for wear and re-sharpen when needed to preserve hole quality over time.