Dormer Pramet A110 5.70 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

When deep holes are on the agenda, the Dormer Pramet A110 5.70 mm HSS ST Straight Shank Long Series Drill (DIN 340) is built to perform with precision and reliability. This drill combines a robust 118° conventional point with a steam oxide finish, delivering a strong starting bite that’s easy to re-sharpen and reuse project after project.

• Diameter: 5.70 mm — precision sizing for accurate hole diameters in a range of applications.
• Point geometry: 118° conventional point for immediate cutting action and good centering, reducing wandering during start.
• Material and finish: Premium HSS with a steam oxide finish that minimizes workpiece adhesion and enhances chip flow for cleaner holes.
• Shank type: Straight shank designed for straightforward clamping in common drill chucks and holders, suitable for both handheld and machine use.
• Length: Long series optimized for drilling deeper holes and achieving extended reach in tight or recessed work areas.
• DIN standard: DIN 340 compliant, ensuring compatibility with standard tool holders and consistent interchangeability within tooling systems.
• Material versatility: Effective for drilling steel, aluminium, and stainless steel, making it a flexible choice across metalworking tasks.
• Usage: Ideal for handheld drilling in fabrication shops, maintenance tasks, and machine-based drilling where depth and reach matter.

Why this drill stands out: the combination of a durable HSS core, a bite-ready 118° point, and a steam oxide finish translates to fewer re-drills, lower build-up on the cutting edge, and smoother chip evacuation in a variety of materials. The long length reduces the need to switch tools when you’re working in confined spaces or with deep cavities, while the straight shank keeps alignment simple and dependable in both manual and powered setups.

Practical use scenarios:

• Deep-hole drilling in steel components, brackets, and frames where access is limited.
• Prototyping or fabrication tasks that require precise 5.70 mm holes with clean edges.
• Maintenance and repair work on machinery where a reliable drill bit with extended reach is essential.
• General purpose drilling in aluminium and stainless steel where a versatile, easy-to-sharpen bit is beneficial.

Pro tips for best results:

• Start with a light touch and steady feed to establish a clean center and prevent wandering.
• Use a suitable cutting fluid or lubricant for metals to manage heat buildup, especially on stainless steel.
• Wear appropriate PPE and support the workpiece to avoid deflection on long-reach drilling.
• Resharpen the 118° point when you notice gradual edge dulling to extend tool life.
• Pair with compatible tool holders and ensure proper clamping to maintain concentricity, especially in longer reaches.