Dormer Pramet A940 5.20 mm HSS-E HIGH PERF MULT-APP STRAIGHT SHANK LONG SERIES DRILL DIN/ANSI

Meet the Dormer Pramet A940 5.20 mm HSS-E High-Perf Multi-App Straight Shank Long Series Drill — a precision metalworking drill built for repeatable, true holes across a range of materials. Designed for demanding environments, it combines a robust cobalt-enhanced HSS-E core with a geometry that supports deep-hole performance and reliable starts in aluminum, steel, and stainless steel alike.

• 130-degree self-centering point: delivers clean starts with minimal wandering, reducing the push force required to establish the hole and improving accuracy right from the first engagement.
• Bright finish: a smoother cutting edge that resists built-up material on the flute, helping to maintain sharpness and reduce chip adhesion during long runs.
• Parabolic flute design: optimized chip evacuation to support deeper holes in a single pass, cutting through tougher workpieces without clogging or chatter.
• Premium HSS-E material: cobalt-enhanced high-speed steel that stands up to demanding metals, including steel, aluminum, and stainless steel, for longer tool life in multi-material applications.
• Long-series, straight-shank: engineered for deep-hole work and compatibility with standard drill chucks and holders, making it a reliable choice for CNC and manual setups alike (DIN/ANSI standard).
• High-precision performance: designed to deliver consistent hole size and concentricity, achieving tight tolerances (H10-type outcomes in suitable conditions) at appropriate speeds and feeds.

This drill is ideal for machine shops, fabrication facilities, and automotive/industrial environments where dependable hole quality, deeper reach, and repeatable results matter. With the A940, you get a versatile, multi-application solution that reduces tool changes and speeds up production without sacrificing accuracy.

Specifications at a glance

• Diameter: 5.20 mm
• Point geometry: 130 degrees (self-centering)
• Material: HSS-E (cobalt-enhanced)
• Shank: Straight
• Series: Long
• Finish: Bright
• Tolerance potential: H10 range under proper cutting conditions
• Standards: DIN/ANSI compatible

For best results, pair the A940 with appropriate cutting speeds and feeds for the workpiece material, use proper clamping to minimize deflection, and employ cooling/lubrication as needed to maximize edge life and hole quality. This is more than a drill bit — it’s a reliable, high-performance partner for precise, deep-hole drilling across multiple metals.