Dormer Pramet A110 8.60 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

The Dormer Pramet A110 8.60 mm HSS straight shank long-series drill (DIN 340) is built to reach places standard drills can’t. Featuring a precise 118° conventional point, this drill projects a strong, easy-to-regrind tip that stays sharp longer between touch-ups. The combination of DIN 340 compliance, a long overall length, and a straight cylindrical shank makes it a reliable workhorse for deep-hole drilling in metalworking shops and on-site maintenance.

Key features that matter in real-world drilling:

• : A110 drills with a robust tip that’s easy to refresh in-house, helping you maintain cutting performance over many holes.
• Steam oxide finish (steam tempered)
• Reduces built-up edge and prevents workpiece material from sticking to the cutting edge, promoting cleaner holes and longer edge life.
• Long length for deep holes: Specifically designed for applications requiring extra reach, with an overall length around 175 mm and flute length optimized for sustained cutting in steel and beyond. This makes it ideal for drilling deeper holes without sacrificing rigidity.
• Premium HSS material: Suitable for a broad range of metals — steel, aluminum, and stainless steel — delivering capable performance across common machining tasks.
• Straight shank versatility: The cylindrical shank is compatible with a wide range of hand-held drills and machine chucks, offering straightforward setup for quick turnarounds.
• DIN 340 standard: The long-series, DIN 340 specification ensures consistent geometry and compatibility with standard drilling equipment and protocols.
• 6×D drilling depth without pecking: Engineered to maintain steady cutting performance through significant depths in steel, reducing the need for intermittent pecking.

Why this drill is a standout choice for your workshop

In practical terms, the A110 8.60 mm drill is a dependable solution wherever you need to punch deep, clean holes in metal. The long-series design eliminates the constant swapping of shorter tools or extending rods, saving time and reducing setup complexity on busy lines. Whether you’re drilling through steel, cast iron, aluminum, or stainless, the steam-oxide finish helps minimize sticking and chip buildup, which translates into smoother feeds and reduced heat generation.

Ideal for both hand-held operations and machine drilling, this drill combines a robust HSS core with a precise geometry to deliver consistent hole quality. Its 8.60 mm diameter is a common size for creating pilot holes, deburring, or stepping up to larger bores in a controlled sequence, all while preserving the tool’s edge through multiple passes. The DIN 340 standard alignment guarantees reliable performance across equipment brands and setups, so you won’t have to guess whether it will fit your chuck or collet.

Who can benefit most

• Fabrication shops performing mid-scale metalworking tasks that require precise, deep drilling in steel, aluminum, or stainless components.
• Maintenance teams carrying out in-situ repairs where space is tight and reach matters.
• Engineers and machinists who want a dependable, re-sharpenable tip that holds its edge between service intervals.

Use cases and practical tips

• Deep holes in metal assemblies: Trust the long-series design to reach deeper without retracting the drill prematurely.
• Working with different metals: Start with steel or cast iron, then switch to aluminum or stainless in the same setup, thanks to the universal HSS core.
• Speed and feeds: Use a conservative start speed for harder materials and increase gradually as cutting progresses. Keep a light coolant or cutting fluid in aluminum and steel to dissipate heat and extend edge life.
• Chip evacuation: Maintain steady axial feed to help chips clear through the flute; withdraw periodically to clear chips if drilling deep into tough material.
• Maintenance: After use, re-sharpen the tip when needed and store in a dry, organized case to preserve edge integrity for the next job.

In short, the A110 8.60 mm HSS straight shank long-series drill is a purpose-built tool for professionals who demand reach, reliability, and consistent hole quality across common metallic substrates. It’s the kind of drill you reach for when you know you’ll be punching through several layers or drilling a lengthy hole in a cramped workspace, all while maintaining edge integrity and predictable performance.