Dormer Pramet R457 5/16 Inch CARBIDE TIALN FORCE-X STEPPED SHANK COOLANT FEED SHORT SERIES (X3D) DRILL DIN 6537 K

The Dormer Pramet R457 5/16 inch carbide drill is built for serious metalworking tasks. Its 140° four-facet split point self-centers and reduces push force for clean starts, while the TiAlN coating and short-series design (X3D) boost durability and enable faster, reliable hole production. With a DIN 6537 K shank for standard compatibility, this drill handles steel, aluminum, and stainless steel with consistent hole quality.

Designed to deliver high performance, its special flute design with coolant feed improves rigidity and heat management, allowing higher speeds and feeds while maintaining hole quality and protecting the cutting edges. Capable of producing holes within tight h9 tolerances, it supports production workloads and precise manual work alike.

• Self-centering 140° four-facet split point: Ensures a clean start with minimal wander and reduced starting push force for accurate holes on first attempt.
• TiAlN-coated premium carbide: Delivers longer tool life and steadier performance across steel, aluminum, and stainless steel by reducing wear and heat buildup.
• Coolant-fed flute design for higher speeds: Optimizes chip evacuation and rigidity, enabling higher cutting speeds and feeds while maintaining hole quality and protecting the tool.

Together, these design elements translate to faster cycle times, fewer reworks, and consistently tight holes—even at higher speeds and feeds. The R457 is a dependable choice for engineers, machinists, and hobbyists who demand precision, durability, and straightforward setup in everyday metalworking tasks.