Dormer Pramet A125 3/32 Inch x 125 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Meet the Dormer Pramet A125 3/32 in x 125 mm HSS Straight Shank Extra Long Drill—designed to tackle deep holes with confidence while delivering precise, dependable performance across a range of materials. This is more than a drill bit; it’s a high-precision tool built for demanding machining tasks where reach and reliability matter.

What makes the A125 stand out

• 118-degree conventional point provides a strong initial bite and remains easy to re-grind, so you can extend its life between sharpening sessions without sacrificing performance.
• Steam oxide finish: A smooth, low-friction surface that helps prevent workpiece material from sticking to the cutting edge, promoting cleaner starts and steadier hole quality.
• Extra long length: Specifically engineered for drilling very deep holes or when extra reach is essential—reducing the need for extensions and multiple setups.
• Premium HSS core: High-speed steel offers robust performance across a variety of common industrial materials, including steel, aluminium, and stainless steel.
• Straight shank, versatile fit: The straight shank design ensures compatibility with a wide range of drill chucks and machines, from benchtop drill presses to handheld systems.
• BS 328 compliance: Built to standard specifications, delivering predictable interchangeability and reliability in professional workshop environments.

Ideal uses and practical benefits

Ideal for machinists, fabricators, and DIY professionals who regularly drill deeper holes or work in confined spaces, the A125 3/32 in x 125 mm excels in steel, aluminium, and stainless steel. Whether you’re threading a long fastener into a frame, creating clearance holes in structural components, or preparing guides for hardware assemblies, this drill bit delivers steady cutting action and consistent hole geometry. The extra length reduces the need for multiple tools, speeding up setups and minimizing tool changes on busy production days.

How to get the best results

• Use a low-to-moderate feed and steady pressure to allow the 118-degree point to establish a true pilot hole from the start.
• Apply light cutting fluid or coolant when drilling harder materials to minimize heat and extend edge life.
• Keep the bit perpendicular to the work surface to avoid wandering, especially when drilling deep holes.
• Sharpen as needed—this bit is designed for easy re-grinding to maintain aggressive cutting performance.

Technical snapshot

• Diameter: 3/32 inch
• Overall length: 125 mm
• Material: Premium HSS
• Tip angle: 118 degrees
• Finish: Steam oxide
• Shank: Straight
• Standard: BS 328

When the job demands precision, reach, and dependable performance in a single, versatile drill, the Dormer Pramet A125 3/32 in x 125 mm HSS Straight Shank Extra Long Drill is ready to deliver—driving quality holes across a spectrum of materials with minimal fuss and maximum consistency.