01J010 - Walter SST Cobalt Stub Drill Bit #10 - Heavy Duty Sheet Metal Bit

Precision Engineering for Sheet Metal Applications

The Walter #10 SST Stub Drill Bit (01J010) represents the pinnacle of drilling technology for industrial fabrication, specifically engineered to address the challenges of drilling through sheet metal and hard alloys. Unlike standard jobber-length bits, this stub drill features a screw machine length design. This shorter profile significantly increases the torsional rigidity of the bit, minimizing deflection and vibration during operation. This structural stability is crucial when drilling thin-walled materials or when using portable power tools where maintaining a perpendicular angle can be difficult.

Manufactured from a premium cobalt blend high-speed steel, the SST Stub Drill is built to withstand the high temperatures generated when drilling tough materials like stainless steel and high-tensile alloys. The addition of cobalt prevents the cutting edge from softening under heat, ensuring the bit retains its hardness and sharpness far longer than standard HSS bits. This durability translates to reduced downtime for tool changes and a lower cost per hole in high-volume production environments.

A key feature of this drill is its 135° split point geometry. This aggressive point angle allows the drill to bite into the material immediately upon contact, eliminating the need for center punching and preventing the bit from "walking" or skating across the surface of the workpiece. This is particularly advantageous when working with polished or curved surfaces. Furthermore, the bit is finished with Walter's exclusive Bronze SST surface treatment. This specialized coating reduces the coefficient of friction between the tool and the workpiece, facilitating smoother chip evacuation and further reducing heat buildup. Whether used in a stationary drill press or a hand drill, the Walter 01J010 delivers precise, round holes with minimal burr formation.