The Dormer Pramet A976 5.80 mm HSS-E High-Performance Multi-App Straight Shank Extra Long Drill is built for precision, depth, and reliability in demanding drilling tasks. This DIN 1869 / 1 drill bit combines robust material technology with thoughtful geometry to deliver clean, accurate holes across a range of materials.

• 130-degree self-centering point: starts holes precisely where you intend, minimizes wandering and reduces the push force needed to begin drilling, which translates to smoother operation and less operator fatigue.
• Bright finish: a slick surface that helps prevent workpiece material from sticking to the cutting edge, improving chip flow and reducing built-up edge during extended drilling sessions.
• Parabolic flute design: engineered to evacuate chips efficiently when drilling very deep holes in a single pass, lowering heat build-up and maintaining hole dimensional accuracy even in long bores.
• Premium HSS-E material: cobalt-enriched high-speed steel delivers superior hardness and heat resistance, enabling reliable drilling through steel, aluminium, and stainless steel without frequent tool changes.
• Extra-long length series: specifically designed for applications requiring increased reach—perfect for deep bores, challenging fixtures, or components where access is limited.
• Straight shank DIN 1869 / 1: standard, compatible with common drill chucks and machines for stable performance and repeatable hole quality.

Ideal for professionals and serious hobbyists alike— machinists, toolmakers, and maintenance engineers who routinely encounter deep bores or recessed work environments will appreciate the extended reach and dependable geometry. It’s also a smart choice for automotive, mold making, and fabrication projects where deep hole accuracy matters and tool changes aren’t convenient.

Use cases include drilling through thick steel plates, deep pockets in aluminum housings, or any application where a single, precise pass through deep material is preferred. The combination of a 130-degree point, parabolic flute, and HSS-E composition provides a balanced mix of aggressive penetration, controlled chip evacuation, and long-term durability.

Tips for best results:

• Match cutting speed and feed to the material: slower speeds with tougher materials (steel, stainless) and more aggressive feeds for softer metals like aluminum, with appropriate coolant or lubrication.
• Align the drill precisely with the workpiece and maintain steady feeds to preserve flute geometry and hole accuracy.
• When drilling deep holes, apply gentle pecking and allow the parabolic flute to evacuate chips efficiently to avoid clogging.