Somta Long Series Drill - HSS-E Parabolic Flute - 3.3mm

The Somta Long Series Drill - HSS-E Parabolic Flute (3.3mm) is purpose-built for serious deep-hole drilling in metalworking. Its extended length means you can plunge through thick workpieces and reach recessed pockets in a single setup, delivering accurate holes without the need for multiple pilot drills or re-entrants.

What sets this drill apart is the combination of HSS-E durability and a parabolic flute that moves chips away from the cut zone the moment you start drilling. The result is smoother cutting action, reduced heat buildup, and less friction on the flute walls—all of which translates to longer tool life and fewer interruptions during extended drilling cycles.

Key advantages that matter in real-world machining

• Long series geometry for deep holes provides stable guidance and minimizes deflection, so your holes stay round even in challenging materials.
• HSS-E construction offers superior edge retention and heat resistance, keeping the cut clean under demanding conditions.
• Parabolic flute design enhances chip evacuation, reducing clogging and allowing consistent feed rates for deeper drilling jobs.
• Sharp cutting edges deliver clean, precise holes with minimal burrs, improving fit and finish in assemblies.
• Versatile performance across common metalworking materials—carbon steel, alloy steel, cast iron, and aluminum—without sacrificing accuracy or speed.

This drill bit is ideal for professional workshops, manufacturing floors, and precise DIY projects where deep drilling is routine. If you’re building or repairing machinery housings, fabricating frames, or creating through-holes in thick metal plates, this 3.3mm HSS-E drill provides reliable performance, predictable results, and a longer tool life compared to standard-length bits.

Practical tips for best results

• Use light lubrication or cutting fluid to manage heat and extend edge life during long drill passes.
• Start with a modest feed rate and maintain steady pressure to preserve hole concentricity.
• When drilling deep holes, pause to clear chips regularly to prevent clogging and stalling.
• Securely clamp the workpiece to prevent movement; a stable setup improves hole accuracy and tool longevity.

Specifications

• Diameter: 3.3 mm
• Material: HSS-E
• Flute design: Parabolic
• Series: Long

With the Somta Long Series Drill, you gain a reliable deep-hole partner that maintains accuracy, resists heat, and keeps roughing to a minimum. It’s a practical upgrade for anyone who regularly works with thick metals and demanding drilling applications, delivering professional results with every hole.