01H015 - Walter 15/64" SST Heavy-Duty Stub Drill Bit with 135° Split Point

High-Performance Drilling for Tough Materials

The Walter 01H015 15/64" SST Stub Drill is an industrial-grade cutting tool engineered for precision and durability in demanding environments. Known as a "stub" or "screw machine" length drill, this bit features a shorter flute and overall length compared to standard jobber drills. This design characteristic significantly increases the torsional rigidity of the tool, making it highly resistant to breakage under heavy feed pressures or when used in portable hand drills where off-axis movement is common.

Manufactured with Walter's exclusive Bronze SST surface treatment, this drill bit is optimized for high-tensile materials, including stainless steel and other ferrous alloys. The specialized coating helps dissipate heat and reduces friction, extending the cutting life of the tool. The geometry of the tip is equally impressive; it boasts a 135° split point. Unlike standard 118° points, the 135° split point is self-centering, meaning it engages the material immediately upon contact. This eliminates the "walking" or skating effect often seen when drilling into smooth or curved surfaces, thereby removing the necessity for pre-drilling center punches.

This drill is particularly effective for thin-walled materials and sheet metal applications. The robust web construction ensures that the bit maintains its integrity even when breaking through the backside of the workpiece, leaving a cleaner hole with minimal burrs. Whether utilized in a stationary drill press or a portable power tool, the Walter SST Stub Drill delivers consistent, high-quality results in maintenance, repair, and fabrication operations.