Toolex HSS-E Piloted Counterbore Metric 180° - M1.7

The Toolex HSS-E Piloted Counterbore (M1.7) is a precision tool designed to create flat-bottom counterbores with repeatable accuracy. It’s crafted for machinists, fabricators, and CNC operators who require clean, reliable recesses in metal and other tough materials.

• Material and grade: HSS-E (high-speed steel with cobalt) for enhanced strength, heat resistance, and durability during demanding counterboring tasks.
• 180° cutting edge: Flat-bottom geometry that delivers uniform, square recesses suitable for flush-fastener seating.
• Piloted design: Built-in pilot ensures precise alignment with the pre-drilled hole, improving stability and cut quality.
• Metric size: M1.7 counterbore diameter compatible with standard metric fasteners and assembly processes.
• Applications: Effective on steel, aluminum, and various alloys, providing consistent results across common workshop materials.
• Durability: The cobalt-enhanced HSS construction maintains cutting performance at elevated temperatures, extending tool life in busy production environments.

Using this piloted counterbore translates to smoother setups, reduced rework, and repeatable depth control. The flat-bottom recesses ensure precise seating for socket-head and cap screws, while the piloted guidance minimizes wandering during entry. With its robust HSS-E composition, the tool remains reliable through multiple passes, making it a dependable choice for fixture plates, brackets, and everyday metalworking tasks where accuracy matters.