Somta Long Series Drill - HSS-E Parabolic Flute - 6.8mm

Introducing the Somta Long Series Drill - HSS-E Parabolic Flute, 6.8 mm. Built for deep-hole drilling, this tool delivers exceptional reach without compromising hole quality. Its extended flute length enables you to pierce through thick workpieces in a single pass, eliminating the need for cumbersome extensions or multiple tools.

Crafted from HSS-E (High-Speed Steel with cobalt), this drill balances outstanding wear resistance with superior heat tolerance. That means reliable performance across demanding materials and sustained edge sharpness even under tough drilling conditions. The parabolic flute design actively channels chips away from the cutting edge, reducing clogging, cutting forces, and the risk of chatter—so you maintain straight, true holes.

Precision and efficiency in every hole

Coupled with a sharp cutting edge and optimized flute geometry, this drill delivers cleaner holes with minimal burr and improved surface finish. The parabolic flute not only evacuates chips more effectively but also minimizes friction and heat buildup, extending tool life and keeping your drilling operation cooler and more stable during long cycles.

Ideal for tough materials and deep applications

Whether you’re working with steel, stainless steel, cast iron, or other hard alloys, the 6.8 mm Somta long-series drill maintains consistent penetration and hole quality. The long reach is particularly valuable in automotive components, heavy fabrications, and other scenarios where access is restricted and depth matters—letting you complete jobs in fewer setups.

Practical tips for best results

• Use peck drilling to periodically clear chips and prevent binding; withdraw the drill to flush material and maintain cutting efficiency.
• Apply a coolant or cutting fluid to dissipate heat, extend edge life, and improve finish on tough alloys.
• Match speed and feed to the material: harder metals benefit from slower speeds and steadier feeds to keep chips moving and avoid overheating.
• Align workholding accurately and start with a light pilot or guide when needed to prevent wandering on deep holes.

Specifications at a glance

• Diameter: 6.8 mm
• Material: HSS-E (High-Speed Steel with cobalt)
• Flute design: Parabolic flute
• Length category: Long Series

Choose the Somta Long Series Drill - HSS-E Parabolic Flute - 6.8 mm for reliable deep-hole drilling with controlled chip evacuation, enhanced heat resistance, and consistently precise holes across thick materials.