01H025 - Walter 25/64 Inch SST Stubby Drill Bit for Stainless Steel

High-Performance Drilling for Confined Spaces

The Walter 25/64" SST Stub Drill (01H025) is a premium-grade cutting tool engineered for industrial environments where precision, durability, and space constraints are critical factors. Unlike standard jobber length drills, this stub (or screw machine length) drill features a shorter flute and overall length. This design characteristic significantly increases the torsional rigidity of the bit, drastically reducing the likelihood of snapping or deflection during operation. It is the preferred choice for drilling into thin-walled materials, sheet metal, and structural components where high feed pressure is required.

Advanced Geometry and Material

Manufactured from high-quality High-Speed Steel (HSS), the 01H025 is further enhanced with Walter's proprietary bronze SST surface treatment. This specialized coating facilitates efficient chip evacuation and reduces friction, thereby minimizing heat buildup—the leading cause of drill failure in hard metals like stainless steel. The drill tip features a precision-ground 135° split point. This self-centering geometry ensures immediate engagement with the workpiece, preventing the bit from "walking" or skating across the surface, and completely eliminates the need for pre-drilling or center punching.

Versatile Industrial Application

While optimized for stainless steel and mild steel, this drill bit performs exceptionally well on non-ferrous metals and aluminum. Its robust design makes it particularly suitable for portable drilling applications where hand stability can vary, as the shorter shank offers better control and resistance to lateral forces. Whether utilized in a stationary drill press or a handheld power tool, the Walter SST Stub Drill delivers clean, burr-free holes with consistent accuracy.