Dormer Pramet A125 19/32 Inch x 460 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Dormer Pramet A125 19/32 Inch x 460 mm HSS Straight Shank Extra Long Drill BS 328 is built for deep, accurate holes in metalworking projects where reach and reliability matter. This long-series drill pairs a robust ground 118° point with durable high-speed steel, delivering a starting bite that stays true from the first cut to the deepest bore.

The 118-degree conventional point is designed for aggressive starts and easy re-grinding, helping you maintain sharpness between maintenance cycles. Paired with a steam oxide finish, the cutting edge resists workpiece material from sticking and builds a smoother chip flow, reducing heat buildup and improving overall hole quality—even in challenging steels and alloys.

With an extra-long length of 460 mm, this drill is purpose-built for drilling very deep holes and reaching into hard-to-access workpieces. The extended reach minimizes frequent tool changes and minimizes setup time when working on assemblies, frames, or internal features that demand depth beyond standard drills.

Made from premium HSS, this drill excels across a wide range of materials, including carbon steel, stainless steel, and aluminum. Its versatility makes it a practical choice for workshops that handle diverse projects—from fabrication and automotive repair to maintenance and toolmaking. The straight shank ensures compatibility with a wide array of drill chucks and machine types, delivering consistent accuracy without wobble or runout.

Key features at a glance

• 118° conventional point for a strong starting bite and reliable re-grindability
• Steam oxide finish reduces material sticking to the cutting edge and enhances edge life
• Extra long length (460 mm) ideal for deep holes and reach-critical applications
• Premium HSS material suitable for drilling steel, aluminum, and stainless steel
• Straight shank broad compatibility with most drill chucks and machines
• BS 328 standard consistent fit with common tooling setups

Practical applications and use cases

Designed for projects where depth is non-negotiable, this drill excels in:

• Deep holes in steel frames, housings, and chassis components
• Through-holes in thick metal plates and assembly fixtures
• Automotive repairs, maintenance work, and fabrication tasks requiring extended reach
• Machining operations on lathes, milling machines, and drill presses that demand a robust, straight-shank drill

Tips for maximum performance

To extract the best results from the Dormer Pramet A125 extra-long drill:

• Use appropriate cutting fluid or coolant when drilling steel or stainless steel to extend edge life and reduce heat
• Start with a light pilot hole if the material is prone to wandering, then progressively increase drill depth
• Maintain steady feed pressure and avoid aggressive plunging to prevent deflection on the long tool
• Secure the workpiece and support the drill shank to minimize chatter in deep-hole operations

Built for durability, reach, and dependable performance, the Dormer Pramet A125 extra-long drill is a specialized tool designed to tackle deep-hole challenges with confidence. It’s the right choice when your applications demand an extended, rigid, high-speed steel solution that can handle a variety of metals without compromising precision.