Dormer Pramet A110 9.10 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

When depth and durability matter, the Dormer Pramet A110 9.10 mm HSS straight shank long series drill (DIN 340) is engineered to perform. This high‑quality drill bit blends a robust 118° conventional point with a streamlined HSS body, delivering precise starts, clean holes, and dependable longevity across a range of metals.

• 118° conventional point for predictable starts – The classic point geometry reduces walking and wandering, making it easier to position and re‑grind when needed, so you can maintain accuracy across multiple holes without re‑setup.
• Steam oxide finish for smoother cutting – The steam oxide coating minimizes material adhesion to the cutting edge, promoting better chip flow and reducing built‑up edge so you can push deeper without sacrificing edge life.
• Long length series for extended reach – Designed for drilling deeper holes or accessing tight work areas, this long series drill maintains rigidity and stability where standard bits struggle to reach.
• Premium HSS material for versatility – High‑speed steel handles a broad spectrum of workpiece materials, from standard steel and aluminum to stainless steel, giving you one dependable drill for mixed projects.
• Straight shank with DIN 340 compatibility – The straight shank fits a wide range of chucks and holders, delivering reliable grip, concentricity, and repeatable performance in handheld and machine drilling setups.
• Trusted brand with practical, real‑world performance – Dormer Pramet’s engineering approach translates to consistent hole quality, reduced downtime, and fewer tool changes on busy shop floors and workbenches.

Use cases and practical applications

This 9.10 mm drill is a versatile workhorse for both professional shops and DIY projects. Ideal for metal fabrication, automotive work, enclosure manufacturing, and general maintenance, it excels in piercing through steel plate, aluminum panels, and even certain stainless components. Its long length makes it a natural choice when you need to drill deep clearance holes, bolt holes in thicker materials, or penetrate into recessed areas without compromising alignment.

Why choose the A110 long series drill over standard bits?

If you frequently encounter limited access or need to maintain a straight, true hole through progressively thicker sections, the long series design delivers practical benefits. The combination of a sharp 118° point, steam oxide finish, and durable HSS ensures you get reliable hole quality, easier re‑grinding when the edge dulls, and fewer tool changes during extended drilling sessions.

Tips for optimal performance

To maximize life and results with this A110 drill:

• Use appropriate feeds and speeds for the material you’re drilling to minimize heat and edge wear.
• Apply a light cutting fluid or coolant when drilling steel or stainless to improve chip evacuation and edge life.
• Keep the workpiece secure and prevent deflection—especially important with long bits when drilling deep holes.
• Start with a center punch to establish a precise pilot point, then proceed with the drill to maintain accuracy.
• Regularly inspect the point and re‑grind as needed to preserve a clean cutting edge and hole geometry.

Specifications at a glance

• Diameter: 9.10 mm
• Point geometry: 118° conventional point
• Material: Premium high‑speed steel (HSS)
• Finish: Steam oxide
• Shank type: Straight shank (DIN 340)
• Series: Long length
• Standards: DIN 340 compliant

Designed to be a dependable, all‑purpose solution for metalworking tasks, the Dormer Pramet A110 drill delivers precise starts, deep reach, and versatile performance across a range of common shop materials. Whether you’re equipping a handheld drill or a milling machine, this long series HSS drill is built to stay sharp longer and maintain hole integrity from first cut to final depth.