Dormer Pramet A125 3/16 Inch x 400 mm HSS ST Straight Shank Extra Long Series Drill BS 328

When you need to reach deep into material without sacrificing precision, the A125 drill from Dormer Pramet delivers. This 3/16 inch diameter drill features an 118-degree conventional point, a geometry designed for a strong, self-centering bite that’s also easy to re-grind for extended life in tough jobs.

The steam oxide finish reduces friction and helps prevent workpiece material from sticking to the cutting edge, promoting cleaner holes and less built-up edge during extended drilling sessions. The result is steadier chip evacuation, smoother starts, and fewer interruptions on demanding projects.

Designed as an extra-long series drill, this tool offers notable reach without compromising rigidity. The 400 mm length is ideal for drilling very deep holes or accessing tight spaces where standard-length drills can’t reach. Whether you’re fabricating, repairing, or assembling, this long-reach characteristic saves time and reduces the need for getting creative with drill extensions.

Crafted from premium HSS (high-speed steel), this drill handles a range of materials—from steel and aluminum to stainless steel—making it a versatile workhorse for metal shops and on-site fabrication. The straight shank ensures compatibility with common drill chucks and holders, delivering reliable, repeatable performance across different machines.

Key advantages at a glance

• 118° conventional point for solid starts and easy re-grindability
• Steam oxide finish minimizes sticking and aids chip flow
• Extra-long 400 mm length for deep holes and hard-to-reach applications
• Premium HSS material suitable for steel, aluminium, and stainless steel
• Straight shank for broad compatibility with standard chucks

Practical use tips: run at appropriate spindle speeds for the material, use a steady feed rate, and apply moderate cutting fluid to extend tool life. This drill excels in scenarios like automotive fabrication, heavy equipment maintenance, and metalworking projects where hole depth and precision matter most.