Meet the Dormer Pramet A978 3.00 mm HSS-E High Performance Multi-Application Straight Shank Extra Long Drill (DIN 1869). Crafted for precision and reach, this compact yet robust drill is designed to excel where depth and accuracy matter, delivering consistent results across a range of metals.

• 130° point for self-centering entry: The geometry guides the drill tip into the workpiece, reducing wandering and the push force required to start cutting, which translates to cleaner starts and improved control.
• Bright finish for reduced sticking: A smooth, bright surface minimizes material buildup on the cutting edge, helping to prevent chip welding and extend edge life during continuous drilling.
• Parabolic flute design for extra-deep holes: The specialized flute geometry efficiently evacuates chips, enabling deep holes to be drilled in a single pass with steady diameter and less clogging.
• Premium HSS-E material: Built for longevity and versatile performance, this drill handles steel, aluminum, and stainless steel with reliable wear resistance and a hard-wearing edge.
• Extra-long length: Specifically engineered for deep-hole applications and applications where reach is critical, reducing the need to switch tools or repeatedly retracting for clearance.
• Straight shank, DIN 1869: Compatible with a wide range of chucks and holders, ensuring dependable mounting and consistent runout for precise drilling.

This drill is ideal for engineers, fabricators, and machinists tackling through-holes and blind holes in steel, stainless steel, and non-ferrous metals where depth and precision are essential. Use it for fixture work, toolmaking, automotive components, or any project that requires a long-reach solution without sacrificing accuracy.

Practical usage tips

• Choose a conservative spindle speed and steady feed when starting; increase gradually as you observe clean cutting and chip clearance.
• Apply light cutting fluid or lubrication to minimize heat buildup and extend tool life, especially in stainless steel or aluminum.
• Pre-punch or pilot hole for challenging materials to improve centering and reduce bit deflection.
• Periodically retract the drill to clear chips when drilling very deep holes, ensuring a consistent hole diameter and surface finish.

Technical snapshot

• Diameter: 3.00 mm
• Point angle: 130 degrees
• Flute type: Parabolic
• Material: HSS-E (high-performance)
• Length: Extra long
• Shank: Straight
• Standards: DIN 1869