Dormer Pramet A110 3/8 Inch HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

The Dormer Pramet A110 3/8 Inch HSS ST Straight Shank Long Series Drill (DIN 340) is built for professionals who need reliable depth and precision in metalworking. With a purposefully designed long flute length, it reaches deep into workpieces without sacrificing rigidity, making it an ideal choice for applications where access is limited or recesses require an extended drill path.

• 118-degree conventional point for a confident start and reduced wandering, even in challenging materials. The point geometry is easy to re-grind, helping you restore cutting efficiency quickly in demanding shop environments.
• Steam oxide finish minimizes built-up material on the cutting edge, promoting smoother starts and cleaner holes while helping to preserve the drill edge during continuous use.
• Long length series specifically engineered for drilling deeper holes and achieving greater reach. This makes it a practical choice when parts are thick, stacked, or when you’re working with jigs and fixtures that demand extended access.
• Premium HSS material delivers robust performance across a range of metals, including steel, aluminium, and stainless steel. The combination of hardness and toughness makes it a versatile tool in mixed-material setups.
• Straight shank (HSS ST) simplifies compatibility with a broad spectrum of holders and machines, from handheld drills to benchtop drill presses, ensuring stable alignment during operation.
• DIN 340 compliance provides reliable interchangeability with standard tool holders, helping you streamline inventory and reduce setup time in busy workshops.

What problems this drill solves
When you need to drill deeper than a standard drill can reach, the A110 Long Series maintains rigidity and edge life, reducing the need for frequent tooling changes. Its versatility across steel, aluminium, and stainless steel means you can standardize on one drill for multiple projects, cutting downtime and inventory costs.

Ideal for
Fabrication shops, automotive maintenance, machinery assembly, and any job that requires accurate deep-hole drilling in metal. Whether you’re tackling a thick plate or a precision component with limited access, this drill is designed to perform with consistency.

Practical tips for best results
- Use appropriate cutting fluid or coolant when drilling steel to extend tool life and improve hole quality. - Start with a light feed to establish the hole, then increase feed gradually while maintaining a steady spindle speed appropriate for the material. - Avoid dry drilling in stainless steel to minimize workpiece galling and heat buildup; keep the workpiece cool and clear chips regularly. - Sharpen or re-grind the 118-degree point as needed to maintain precise starting geometry and reduce walk in the cut. - When depth is critical, verify your drill depth with a gauge or stop collar to ensure you don’t exceed the material’s required reach.