05A309 - Walter SST+ Corecut 9/16-Inch x 2-Inch HSS Annular Cutter

High-Performance Drilling with Walter SST+ Corecut

The Walter 05A309 SST+ Corecut Annular Cutter is a premium tooling solution engineered for industrial metalworking professionals who demand precision and longevity. Measuring 9/16 inches in diameter with a substantial 2-inch depth of cut, this cutter is designed to handle the rigors of heavy-duty structural steel fabrication, maintenance, and construction. Unlike traditional twist drills that remove all material from the hole, this annular cutter removes only a narrow ring of metal, ejecting the center as a solid slug. This method requires significantly less horsepower and thrust, allowing for faster penetration rates and reduced wear on your magnetic drilling unit.

What sets the SST+ series apart is Walter's exclusive hot hardening process. This advanced heat treatment homogenizes the High-Speed Steel (HSS) structure, providing exceptional toughness and resistance to heat buildup. This makes the 05A309 particularly effective when drilling challenging materials such as stainless steel, where work-hardening can often destroy lesser tools. The cutter features a standard Weldon shank, ensuring compatibility with a wide range of magnetic drills and stationary presses found in workshops across the industry.

Efficiency is key in production environments, and the Walter SST+ Corecut delivers by producing accurate, burr-free holes that typically require no secondary finishing operations like reaming or deburring. The optimized flute geometry ensures rapid chip evacuation, preventing clogging even during deep hole drilling. Whether you are working on structural beams, plate steel, or stainless piping, this cutter provides the reliability and speed necessary to keep your projects on schedule. It is an essential component for any MRO toolkit focused on metal fabrication.