01J020 - Walter SST+ #20 Cobalt Stub Drill Bit for Stainless Steel

Premium Durability for Industrial Drilling

The Walter #20 SST Stub Drill (SKU: 01J020) represents the pinnacle of drilling performance for industrial applications requiring precision and durability. Engineered specifically for the demanding environment of metal fabrication and maintenance, this drill bit features a robust cobalt blend construction. Unlike standard high-speed steel bits, the cobalt alloy provides exceptional heat resistance, allowing the bit to maintain its cutting edge even when drilling through tough materials like stainless steel and hard alloys.

One of the defining characteristics of this tool is its stub length design (also known as screw machine length). By reducing the overall length and flute length, Walter has created a bit with superior rigidity. This significantly decreases the likelihood of snapping or deflection, which is a common issue with jobber-length bits in heavy-duty applications. The increased stability allows for higher feed rates and more precise holes, particularly when working with thin gauge sheet metal where vibration can be detrimental.

The bit is finished with Walter's exclusive bronze SST surface treatment. This specialized coating not only identifies the premium quality of the tool but also serves a functional purpose by reducing friction between the bit and the workpiece. This leads to cooler drilling temperatures and smoother chip evacuation. Combined with a 135° split point, which centers immediately upon contact to prevent "walking," the Walter SST Stub Drill is the reliable choice for professionals who cannot afford downtime due to tool failure.