Dormer Pramet A117 3.10 mm HSS-E STRAIGHT SHANK STUB DRILL DIN 1897

The Dormer Pramet A117 3.10 mm HSS-E Straight Shank Stub Drill is a compact, precision drilling solution built to DIN 1897 standards. With a straight shank and a 3.10 mm diameter, it’s designed for precise hole quality in tight spaces and across a variety of metals. Its 135-degree split point helps start holes quickly and accurately, reducing wandering and the effort needed to keep the bit on center.

The bronze oxide finish minimizes material build-up on the cutting edge, promoting cleaner holes and smoother cutting action. Made from premium HSCO material, paired with a heavy-duty HSS-E construction, this drill is designed to handle hard materials—including tool steel—while delivering reliable performance and longer tool life in demanding applications.

• 135° Split Point for Self-Centering and Reduced Start Force: Starts holes precisely where you intend and minimizes wandering, making setup faster and cuts more consistent.
• Bronze Oxide Finish for Reduced Sticking: Prevents material from sticking to the edge, improving hole quality and reducing cleanup and rework.
• Premium HSCO Material with Heavy-Duty HSS-E Construction: Built to drill hard materials, including tool steel, with durable performance in challenging, real‑world jobs.

This drill bit delivers dependable, repeatable results that help you complete projects faster with fewer interruptions. Its robust construction and center-first starting capability support efficient workflows, cleaner finishes, and longer tool life—making it a trusted choice for engineers, machinists, and maintenance teams handling tough metals and tight-tolerance work.