01A022A - Walter SST+ 11/32-Inch Cobalt Jobber Drill Bit with Quick Shank

Technical Overview of the Walter SST+ 11/32" Drill Bit

The Walter 01A022A is a high-performance 11/32-inch jobber length drill bit belonging to the renowned SST+ series. Engineered for industrial maintenance and fabrication environments, this tool is manufactured from a premium cobalt blend. The inclusion of cobalt significantly enhances the bit's hot hardness and thermal resistance, making it superior to standard high-speed steel (HSS) bits when drilling through tough materials or during prolonged drilling operations where heat buildup is a factor. The bit features a heavy-duty, fully ground body which ensures tight tolerances and precise hole geometry.

A defining technical feature of this model is the exclusive Quick Shank design. This shank geometry is specifically engineered to eliminate the common issue of bit slippage within the chuck, a frequent problem in high-torque applications. By ensuring positive engagement with both keyed and keyless chucks, the Quick Shank maximizes torque transmission from the power tool to the cutting edge. Furthermore, the bit utilizes a "Speed Tip" point geometry. This self-centering design negates the need for center punching, even on curved surfaces, and reduces the axial force required to initiate the cut. The body is back-tapered to minimize friction between the flutes and the hole wall, while the special bronze SST surface treatment further aids in chip evacuation and lubricity.

Designed with efficiency in mind, the 01A022A is particularly optimized for use with cordless power tools. The reduction in friction and the aggressive cutting geometry translate to lower energy consumption per hole, effectively extending the battery life of cordless drills. It is rated for use on a variety of materials including aluminum, mild steel, and non-ferrous alloys, excelling particularly in thin gauge sheet metal applications where clean, burr-free holes are critical.