Dormer Pramet A125 12.00 mm x 400 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

The Dormer Pramet A125 12.00 mm x 400 mm HSS ST Straight Shank Extra Long Series Drill BS 328 is built for serious metalworking tasks that demand reach, precision, and reliability. With a generous overall length and a robust design, this drill is engineered to tackle deep-hole needs without compromising performance.

Key features that drive real-world results:

• 118-degree conventional point — a strong, self-centering tip that resists wandering and remains easy to re-sharpen when needed, helping you maintain accurate hole locations even after multiple uses.
• Steam oxide finish — a sleek oxide layer that minimizes material buildup on the cutting edge, reducing friction and letting you push deeper into harder metals with less snagging.
• Extra-long length series — specifically designed for drilling very deep holes or accessing recessed areas, where standard drills can’t reach without extended tool life or multiple passes.
• Premium HSS material — high-speed steel delivers dependable performance across a range of materials, including steel, aluminium, and stainless steel, while balancing hardness and toughness for long-term use.
• Straight shank — universally compatible with a wide array of drill chucks and machine setups, enabling quick changes and solid grip during demanding operations.
• BS 328 compliant — engineered to meet recognized standards, giving you confidence in consistency and interchangeability with compatible tooling ecosystems.

Why this drill stands out in practical terms:

• Ideal for thick-work machining, automotive fabrication, and maintenance tasks where access is limited or hole depth is critical.
• Versatile across metals—whether you’re threading through carbon steel, non-ferrous alloys, or stainless components, you’ll benefit from controlled cutting action and reduced chatter.
• Long life in repetitive drilling cycles thanks to the robust HSS core and the built-in edge retention of the conventional point.

Usage guidance for best results:

• Use appropriate cutting fluid or coolant to minimize heat and extend tool life, especially on deep-hole operations.
• Face the workpiece properly and apply steady, even feed pressure to preserve the point and avoid deflection.
• For deep holes, consider pecking or stepping techniques to manage chip evacuation and prevent clogging.
• Inspect the flute and edge regularly; re-sharpen when you notice a drop in cutting efficiency to maintain accuracy.

Ideal applications include drilling deep through thick metal sections, fabricating structural supports, and maintenance tasks in workshops where every millimeter of reach counts. The Dormer Pramet A125 drill blends precise geometry with durable construction to deliver consistent results, reducing rework and boosting productivity on your most demanding projects.