Dormer Pramet A110 4.40 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

Meet the Dormer Pramet A110 4.40 mm HSS ST Straight Shank Long Series Drill, DIN 340 — a purpose-built drill designed for deep, precise holes without compromise. The combination of a robust tip, durable steel, and long flute reach makes it a reliable choice for demanding fabrication work.

• 118-degree conventional point — a strong, self-centering tip that begins cutting cleanly and stays on course, reducing wandering and easing re-grind maintenance when the tool dulls.
• Steam oxide finish — a surface treatment that minimizes built-up edge, helping the drill slice through workpieces with less sticking and smoother chip evacuation for steadier drilling performance.
• Long length series — intentionally extended flute length for drilling deeper holes and accessing hard-to-reach interiors, ideal when standard drills won’t reach the required depth.
• Premium HSS material — high-speed steel delivers solid toughness and heat resistance, suitable for drilling through steel, aluminium, and stainless steel with consistent results.
• Versatile application — designed for both handheld and machine-driven drilling, offering dependable performance across a range of setups and materials.

The DIN 340 specification ensures reliable interchangeability with standard chucks and setups, making the A110 a trusted choice for workshops that need a repeatable drill for multiple materials and deep-hole applications.

Use cases you’ll appreciate:

• Deep-hole drilling in steel plates or thick aluminum sections where shorter drills fall short.
• Internal feature creation in fabrications requiring precise, clean edges and tight tolerances.
• Handheld drilling tasks and machine setups alike, where extended reach and dependable edge geometry matter.

Practical tips for best results:

• Keep the 118-degree tip sharp and consider re-grinding with care to maintain accuracy and ease of re-sharpening.
• Match speed and feed to the material: moderate speeds with steady feeds prevent overheating and reduce built-up edge for cleaner holes.
• Use appropriate lubrication to extend tool life, especially when drilling tougher metals like stainless steel.