Somta Long Series Drill - HSS-E Parabolic Flute - 6.1mm

Meet the Somta Long Series Drill – HSS-E Parabolic Flute, 6.1mm. Built for deep-hole accuracy in thick, demanding workpieces, this drill balances extended reach with a precise cutting geometry to deliver clean, straight holes every time. The HSS-E construction provides dependable durability and heat resistance, so you can push through tough metals without sacrificing precision or tool life.

Why this long-series drill stands out

• Long reach for deep holes: An extended flute length lets you drill through thick materials and reach into recessed areas without repositioning.
• HSS-E for demanding environments: High-speed steel with enhanced wear resistance maintains sharpness under heat, delivering consistent performance in metalworking tasks.
• Parabolic flute design: Optimized chip evacuation reduces cutting forces and minimizes heat buildup, which translates to smoother drilling and longer tool life.
• Sharp, dependable cutting edges: Precision-ground lips produce clean, round holes with minimal workpiece burrs or deflection.
• Friction reduction and heat management: The flute geometry minimizes friction in the cut, helping maintain finish quality and stability even on thicker stacks of material.
• Versatile for metalworking applications: Ideal for drilling through steel, aluminum, and other common metals in fabrication, automotive, maintenance, and workshop environments.

Ideal use cases

• Deep-pocket drilling in thick steel plates and structural workpieces
• Machining fixtures, jigs, and fixtures where hole depth exceeds standard drill reach
• Automotive fabrication, general metal fabrication, and maintenance tasks requiring reliable deep drilling
• Prototype and small-batch production where hole alignment and diameter accuracy are critical

Practical tips for best results

• Maintain a steady drilling feed and avoid excessive plunge pressure to maximize tool life and hole quality.
• Use appropriate coolant or tapping fluid to manage heat buildup during deeper holes.
• Peck drilling in incremental depths can help evacuate chips and prevent clogging, especially in tougher materials.
• Ensure the drill is securely held in a rigid chuck or collet to minimize runout and improve hole concentricity.
• Inspect and replace the drill when you notice signs of edge dulling or excessive rubbing, as sharp edges are key to clean, accurate holes.

What you get

The Somta Long Series Drill – HSS-E Parabolic Flute, 6.1mm, is designed to deliver reliable deep-hole performance in demanding metalworking tasks. Its combination of long reach, durable HSS-E construction, and efficient chip evacuation makes it a practical choice for professional shops and serious DIYers who require consistent results from extended drilling operations.