05A992 - Walter SST Core Cut Annular Cutter Kit - 2 Inch Depth - 6 Piece Set

Premium Annular Cutter Set for Heavy-Duty Fabrication

The Walter SST Core Cut Weldon Shank 2" Cutter Kit (05A992) represents a premium solution for industrial hole-making operations. Designed by Walter Surface Technologies, the SST (Super Speed Tip) series is engineered to tackle the toughest materials, including stainless steel and structural steel, with exceptional speed and longevity. Unlike traditional twist drills that must convert the entire volume of the hole into chips, these annular cutters only remove the material at the periphery of the hole, ejecting a solid slug. This method requires significantly less horsepower and thrust, allowing for faster penetration rates and reduced wear on magnetic drilling machines.

The kit features a carefully selected range of diameters—9/16”, 11/16”, 13/16”, 15/16”, 1”, and 1-1/16”—specifically chosen to match common bolt sizes used in structural steel erection and heavy equipment repair. Each cutter in this set offers a 2-inch depth of cut (DOC), making them ideal for drilling through thick plates, stacked laminates, and heavy-wall pipe. The inclusion of the standard Weldon shank ensures universal compatibility with the vast majority of magnetic drill presses available on the market today.

One of the standout features of the SST Core Cut line is the proprietary heat treatment and surface geometry. These cutters are manufactured from high-quality High Speed Steel (HSS) and undergo a specialized hardening process that makes them particularly resistant to the work-hardening tendencies of stainless steel. The geometry of the teeth is optimized to clear chips efficiently, preventing heat buildup that can dull cutting edges prematurely. This kit also includes the necessary pilot pin, which serves two critical functions: it precisely locates the center of the hole before drilling begins, and it automatically ejects the metal slug upon completion of the cut.

For MRO professionals and fabricators, having a dedicated kit means less downtime searching for the right size bit. The organized case protects the precision-ground edges during transport and storage. Whether you are working in a fabrication shop or out in the field on a construction site, the Walter 05A992 kit provides the reliability and performance required for critical bolting applications.