Meet the Dormer Pramet A977 3.50 mm HSS-E high-performance multi-application straight shank extra-long drill. Designed for precision, reach, and dependable operation, it’s the go-to choice when deep-hole drilling is required in a variety of materials. Built to DIN 1869 standards, this drill delivers consistent results across steel, aluminum, and stainless steels with a single, efficient pass.

• 130-degree point for effortless centering — The optimized angle helps the flute start cleanly, reduces wandering, and lowers the push force needed to initiate penetration, improving accuracy in challenging workpieces.
• Bright finish for smoother machining — The polished surface minimizes adhesion of workpiece material to the cutting edge, reducing built-up edge and preserving edge life during repetitive plunges.
• Parabolic flute design for deep-hole drilling — Engineered to evacuate chips efficiently, this flute geometry enables drilling extra deep holes in a single pass, minimizing clogging and rework.
• Premium HSS-E material for versatile performance — Cobalt-enhanced HSS-E offers superior heat resistance and wear protection, making it suitable for a broad range of metals including steel, aluminum, and stainless steel.
• Extra-long length for extended reach — When depth matters, this drill delivers the additional length you need for long-pocket applications, deep cavities, or hard-to-reach holes without compromising rigidity.

Ideal for engineers, machinists, and tool enthusiasts who frequently tackle deep-hole tasks, the A977 3.50 mm drill excels in automotive assemblies, mold/die work, aerospace components, and precision fixtures where machinist-friendly reliability and consistent hole geometry are critical. Its straight shank ensures broad compatibility with standard chucks and CNC spindles, making it a practical upgrade for any shop floor toolkit.