Meet the Dormer Pramet A977 5.00 mm HSS-E High-Performance Multi-Application Straight Shank Extra Long Drill (DIN 1869/2) — a precision tool built for deep, reliable drilling across a range of metals. This drill combines a purpose-built point, finish, and flute geometry to tackle demanding jobs with fewer passes and smoother results.

• 130-degree point — delivers quick, self-centering starts and minimizes push force, helping you begin holes cleanly without wandering.
• Bright finish — lowers friction at the cutting edge, reducing built-up edge and helping the drill stay true during long drilling sessions.
• Parabolic flute design — engineered to evacuate chips efficiently, enabling deep-hole drilling in a single pass and reducing clogging or chatter.
• Premium HSS-E material — a high-performance steel formulation that delivers enhanced wear resistance and stability when drilling steel, stainless steel, and aluminum, extending tip life in tough materials.
• Extra long length series — specifically intended for very deep holes and applications requiring increased reach, while maintaining rigidity for accurate drilling through multiple interfaces.

Why engineers choose this drill

The A977 5.00 mm drill combines a precise 130° point with a parabolic flute for dependable performance in challenging workpieces. The extra-long design provides the reach needed for blind or through-hole tasks without sacrificing control, making it a reliable choice for production setups, maintenance, and prototype work alike. Its HSS-E construction supports consistency across materials, so you don’t have to swap tools when switching from steel to aluminum to stainless steel.

Practical uses and best practices

Ideal for shops that routinely drill deep holes in metal workpieces, fixtures, and assemblies. Use appropriate lubrication or coolant to manage heat, especially when drilling stainless steel or thicker sections. Secure your workpiece firmly and start with a light, straight plunge to leverage the self-centering 130° point. For through-holes or long reach tasks, the extra-long geometry helps you maintain steady feeds and clean exits without premature wear.

Care and longevity

Keep the drill sharp and free of built-up material by wiping the flute edges after use and storing it in a dry environment. The bright finish and robust HSS-E construction are designed for repeated use in a workshop setting, but like all cutting tools, performance benefits come from careful handling and proper lubrication.

Upgrade your deep-hole drilling capability with the Dormer Pramet A977 5.00 mm HSS-E Extra Long Drill — a multi-application solution that delivers precision, depth, and durability in a single, dependable tool.