Somta Stub Drill - HSS-E Parabolic Flute UnCoated - 3.9mm

The Somta Stub Drill (HSS-E Parabolic Flute, Uncoated) with a 3.9 mm diameter is a versatile drill bit designed for a wide range of drilling tasks. Made from HSS-E, it delivers strong hardness, toughness, and heat resistance to handle common materials with confidence. The parabolic flute design promotes efficient chip evacuation, helping prevent clogging and heat buildup, while the stub-length geometry provides added rigidity for precise, stable holes.

• Parabolic flute for efficient chip evacuation: The flute shape channels chips away from the cutting edge, reducing clogging and heat buildup so you can drill smoothly and maintain a steady feed rate.
• HSS-E alloy for toughness and wear resistance: Built from high-speed steel with enhanced alloying, this bit resists wear and maintains sharpness through repeated holes in a variety of materials.
• Stub-length design for rigidity and precision: Shorter length increases rigidity and minimizes deflection, delivering cleaner holes with consistent tolerances in demanding setups.

In practice, this drill bit helps you complete jobs faster with fewer passes, thanks to reliable rigidity and efficient chip clearing. It performs reliably across metals, plastics, and composites, providing repeatable hole quality without the need for frequent tool changes. The uncoated finish keeps costs accessible while offering dependable durability for everyday workshop and production drilling.