Dormer Pramet A125 5/32 Inch x 200 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Meet the Dormer Pramet A125 5/32 Inch x 200 mm HSS ST Straight Shank Extra Long Series Drill (BS 328) — a purpose-built solution for deep-hole drilling with outstanding reach and reliable performance. This drill is engineered to tackle long bores and challenging setups where standard bits just won’t reach.

Key advantages that matter in real-world work

• 118-degree conventional point for confidence-inspiring centering, cleaner entry, and a strong point that’s easy to re-sharpen when precision matters most.
• Steam oxide finish minimizes built-up edge and reduces material sticking at the cutting edge, helping chips clear more smoothly and extending tool life.
• Extra-long 200 mm length designed for drilling very deep holes and applications where reach and alignment are critical. Ideal for workpieces with recessed features or long-through bores.
• Premium HSS material delivers dependable performance across a broad range of materials, including steel, aluminum, and stainless steel, without switching tools.
• Straight shank compatibility with a wide range of drill chucks and machines, providing solid grip, reduced runout, and consistent hole quality in long-reach applications.
• Versatility in one tool a single bit that handles a variety of drilling tasks, from fabrication and automotive work to general metalworking where precision and depth are essential.

Use cases and practical guidance

• Ideal for drilling deep, straight boreholes in steel, stainless steel, and aluminum where access is limited or vertical spacing is tight.
• Perfect for through-holes and blind-hole scenarios in fabrications, motor housings, enclosures, and frame components.
• Great in drill presses and CNC/milling setups where a long-reach bit reduces tool changes and increases first-pass success.
• When re-sharpening is needed, the 118° point is straightforward to restore, helping you maximize the bit’s service life.

Pro tips for optimal results

• Choose appropriate speed and feed based on material to maintain a clean cut and extend life—slower feeds for tougher steels, moderate feeds for aluminum.
• Use proper clamping and support to prevent deflection in long-reach drilling tasks, especially with deep bores.
• Apply light cutting fluid or coolant to manage heat and reduce wear when working with stainless steel or harder alloys.
• Regularly clear chips to avoid clogging the flute and maintain steady cutting action throughout the bore.

The Dormer Pramet A125 drill combines deep-reach capability with dependable HSS performance, making it a trusted choice for professionals who demand precision, durability, and versatility in a single, extra-long tool. Whether you’re upgrading your shop’s core drilling arsenal or tackling a demanding fabrication project, this 5/32 inch diameter, 200 mm length drill is built to deliver accurate holes with minimal fuss.