Dormer Pramet A117 5/16 Inch HSS-E STRAIGHT SHANK STUB DRILL DIN 1897

The Dormer Pramet A117 5/16 Inch HSS-E Straight Shank Stub Drill (DIN 1897) is a compact, high-performance drill built for precise hole-making in a range of metals. It’s ideal for engineers, machinists, tradespeople, and serious hobbyists who need reliable starts and clean, accurate holes.

With a 135-degree split point to help self-center and reduce push force, a bronze oxide finish that minimizes sticking to the cutting edge, and a premium HSCO material designed for hard materials, this stub drill delivers dependable performance in demanding applications. Its heavy-duty design is built to endure tough materials, including tool steel.

• 135° split point for self-centering and easier starts: Helps you begin cutting precisely where you intend, reducing wandering and cutting effort for faster, more consistent hole initiation.
• Bronze oxide finish for reduced sticking: Prevents workpiece material from adhering to the edge, promoting smoother cuts and longer edge life in tough metals.
• Premium HSCO material with heavy-duty construction: Enables drilling hard materials, including tool steel, and stands up to challenging applications without quick wear.

By combining precise point geometry, a protective finish, and a durable cobalt-infused alloy, this drill supports faster setups, cleaner holes, and reliable results across production and workshop environments. It’s a dependable choice for projects that demand accuracy and resilience in hard-to-cut materials.