The Dormer Pramet A978 5.00 mm HSS-E High-Performance Multi-Application Straight Shank Extra-Long Drill (DIN 1869) is purpose-built for engineers and fabricators who demand deep-hole capability without switching tools. Crafted for reliability in a range of materials, this drill blends precision geometry with durable construction to deliver consistent results from first entry to final exit.

• 130-degree point – Enables self-centering starts and reduces push force, helping you begin cuts cleanly even on challenging materials and tight tolerances.
• Bright finish – A smooth, anti-stick surface minimizes chip adhesion at the cutting edge, promoting smoother drilling and easier chip evacuation.
• Parabolic flute design – Specially contoured flutes optimize chip collection and removal, allowing extra-deep holes to be drilled in a single pass with reduced risk of clogging or wandering.
• Premium HSS-E material – High-Speed Steel with cobalt enhances hot hardness and wear resistance, making it suitable for drilling steel, aluminum, and stainless steel with reliable performance and longer tool life.
• Extra-long length – Extended reach for deep-hole work, through-holes, and applications where access is restricted, while maintaining rigidity in the flute and shank area.

This multi-application drill is ideal for shop floors and job sites where versatility matters. Use it for through-holes in automotive components, deep pockets in mold and die work, or precision deep-hole tasks in stainless steel and aluminum assemblies. The DIN 1869 specification ensures compatibility with standard drill chucks and setups, so you can confidently drop it into existing tooling without compatibility concerns.

Who benefits most? Machinists, maintenance technicians, mold makers, and precision fabricators who routinely encounter long drilled depths or hard-to-reach cavities will appreciate the efficiency and consistency this drill provides. Its combination of depth capability, material versatility, and robust build makes it a dependable choice for both production environments and demanding DIY projects that call for professional-grade results.

Practical tips for best results:

• Secure the workpiece firmly and use a pilot or center drill to establish a precise starting point.
• Match cutting speeds and feeds to the material being drilled, and consider lubrication to manage heat during deeper holes.
• Rely on the parabolic flute to maintain chip evacuation in deep holes; pause to clear chips if you notice buildup.
• Avoid excessive dwell in stainless steel or hard alloys to minimize tool wear—maintain steady feed and proper coolant flow if available.

The Dormer Pramet A978 5.00 mm HSS-E High-Performance Multi-Application Straight Shank Extra-Long Drill combines depth capability, material versatility, and reliable performance in a single, durable tool. For professionals who demand precise starts, clean holes, and extended reach, this drill is designed to meet the toughest deep-hole challenges with confidence.