01U408 - Walter 1-1/2 Inch 82-Degree HSS Countersink with Weldon Shank

Precision Countersinking with Walter Surface Technologies

The Walter Weldon Shank Countersink 1-1/2" (SKU: 01U408) represents the pinnacle of hole finishing technology for industrial fabricators. Engineered by Walter Surface Technologies, this tool is crafted from premium M2 High-Speed Steel (HSS), a material renowned for its ability to withstand high temperatures and abrasive wear during heavy machining operations. This specific alloy ensures that the cutting edges remain sharp longer, even when processing tough materials like stainless steel and structural steel alloys.

One of the standout features of this countersink is its 82° point angle, the industry standard for flat-head fasteners in North America. This precise angle ensures that screws and bolts sit perfectly flush with the workpiece surface, providing a professional and clean finish essential for high-quality fabrication. Beyond simple countersinking, the tool's geometry is optimized for deburring and chamfering, allowing operators to quickly clean up drilled holes or prepare edges for subsequent welding processes.

Vibration and chatter are common issues when using large countersinks, often leading to poor surface finishes and reduced tool life. Walter has addressed this with an innovative variable pitch design. By spacing the cutting flutes irregularly, the tool disrupts the harmonic frequencies that cause chatter, resulting in a smooth, mirror-like finish on the chamfered surface. Furthermore, the distinct surface treatment applied to the tool reduces friction, aiding in chip evacuation and preventing material buildup on the cutting edges.

Designed specifically for heavy-duty applications, this model features a Weldon shank. This shank style includes a flat surface that allows the set screws of a magnetic drill (mag drill) or similar holder to lock the tool securely in place. This positive locking mechanism eliminates the risk of the tool spinning or slipping in the chuck, ensuring maximum torque transfer and operator safety during demanding tasks.