Somta Long Series Drill - HSS-E Parabolic Flute - 3.4mm

The Somta Long Series Drill - HSS-E Parabolic Flute - 3.4mm is built for serious deep-hole tasks where standard drills fall short. This single, purpose-built drill bit delivers reliable performance in thick metals and hard-to-reach spaces, making it a staple for precision metalworking, fabrication, and tooling workflows.

• Long-length design enables deep-hole drilling without frequent tool changes, letting you pierce through thick materials with confidence.
• HSS-E construction provides superior heat resistance and durability, so you can push through demanding metals without sacrificing edge life.
• Parabolic flute enhances chip evacuation and reduces cutting forces, helping you maintain straight, true holes and extend tool life in tough blasts of material.
• Sharpened cutting edges deliver clean, precise holes with minimal wandering, even when starting in challenging workpieces.
• Friction-reducing flute geometry minimizes heat buildup and saw-like resistance, keeping temperatures down during lengthy drilling sessions.

Ideal for metalworkers who routinely drill through thick steel, cast iron, or alloy components, the 3.4mm diameter is perfect for guide holes, alignment tasks, or any operation requiring a small-diameter, high-precision deep-hole drill. Its parabolic flute design maintains stable performance when chip loads are heavy, reducing the risk of drift and enabling consistent hole quality from start to finish.

Practical tips for best results:

• Use steady, moderate feed rates and avoid aggressive plunging to preserve edge life.
• Peck drilling in longer holes to break up and evacuate chips efficiently.
• Apply a light cutting fluid or lubricant to reduce heat and extend tool life on tougher materials.
• Secure the workpiece firmly to prevent vibration and maintain hole accuracy.