Dormer Pramet A125 17/64 Inch x 200 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Meet the Dormer Pramet A125 17/64 Inch x 200 mm HSS ST Straight Shank Extra Long Series Drill BS 328 — the deep-hole solution that combines precision, reach, and durability in a single, reliable tool.

Why this drill bit stands out

• 118° conventional point — This robust point delivers a strong, self-centering start that minimizes wandering on tough surfaces. It holds its edge well and is straightforward to re-sharpen for repeated use, keeping holes clean and true.
• Steam oxide finish — A friction-reducing coating reduces built-up material on the cutting edge, promoting smoother cutting and easier chip evacuation, which translates to longer tool life and steadier feeds.
• Extra-long length (200 mm) — Designed for deep-hole drilling and applications where extended reach is essential. The longer profile means you can drill through lengthy workpieces or reach into recessed areas without repositioning the setup.
• Premium HSS material — High-speed steel offers broad material compatibility, including steel, aluminum, and stainless steel, with solid heat resistance for sustained drilling performance during demanding jobs.
• Straight shank — Standard shank geometry ensures a secure fit in common drill chucks and CNC collets, delivering consistent grip and minimal runout across a range of machines.
• Versatility for real-world use — From fabrication shops to maintenance bays, this drill bit handles a variety of materials and setups, delivering precise hole diameters with reliable edge quality.

Use cases and practical tips — Ideal for deep boring in automotive components, structural steel, metal housings, and other assemblies where depth and accuracy matter. Use appropriate spindle speeds and feeds for the workpiece material, and apply coolant or cutting fluid when drilling stainless steel or dense alloys to extend cutting life and reduce heat.

In short, the Dormer Pramet A125 drill bit offers the right balance of reach, durability, and versatility for professional machining tasks, helping you complete deep-hole drilling with confidence and efficiency.