Dormer Pramet A125 6.00 mm x 310 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Introducing the Dormer Pramet A125 6.00 mm x 310 mm HSS ST Straight Shank Extra Long Series Drill BS 328—the long-reach, high-performance drill bit crafted for deep-hole work and reliable metalworking results across materials.

The 118-degree conventional point delivers a strong, self-centering start that minimizes wandering and promotes straight, accurate holes. Designed for hard use, this point is straightforward to re-sharpen, helping you extend tool life without sacrificing performance.

The steam oxide finish is more than cosmetic; it reduces friction at the cutting edge and aids chip evacuation. This means smoother drilling, cleaner hole edges, and less material sticking to the bit—especially valuable when working with steels and alloys that tend to gum up traditional drill bits.

Extra-long geometry (310 mm overall length with a straight shank) makes this drill ideal for deep holes and reach-challenging setups. When you’re drilling in recessed areas, through thick workpieces, or accessing cavities in assemblies, this long-series drill maintains rigidity and center accuracy, delivering consistent hole quality from start to finish.

Premium HSS construction equips this drill for versatile use across a range of materials—including steel, aluminum, and stainless steel. Whether you’re fabricating components on a CNC mill, reworking a batch in a drill press, or performing on-site repairs where deep access is required, this drill maintains sharpness and robust performance across jobs.

Who benefits most: machinists, fabricators, automotive technicians, and workshop professionals who regularly encounter deep-hole drilling tasks in metal. If you need reliable reach without swapping between multiple bits, the A125 Extra Long Series is a practical, dependable option.

Practical considerations for best results:

• Use appropriate cutting speeds and feeds for the material to avoid overheating.
• Apply a light cutting fluid when drilling steels to extend bit life and improve finish.
• Secure workpieces firmly to minimize deflection and ensure hole accuracy.
• Deburr holes after drilling to maintain clean, finished parts.

With its precise geometry, durable HSS composition, and extended reach, the Dormer Pramet A125 6.00 mm x 310 mm drill is built to tackle deep-hole projects with confidence—delivering dependable performance once and again in busy production environments.