The Toolex HSS-E Piloted Counterbore with a 180° cutting edge is a precision tooling solution designed to create clean, flat-bottom recesses for M6 fasteners. It's ideal for machinists, fabricators, and DIYers who demand repeatable accuracy and durable performance across common metals.

• Counterbore size: M6 counterbore designed for standard M6 fasteners
• Material: HSS‑E (high-speed steel with cobalt) for enhanced hardness, wear resistance, and heat tolerance
• Edge geometry: 180° cutting edge yields a true, flat-bottom recess for a flush fastener seating
• Piloted design: built-in pilot keeps the cutter centered for consistent depth and minimal drift
• Flute design: precision-ground flutes optimize cutting action and chip evacuation for smooth operation
• Compatibility: suitable for use with standard drill chucks and milling setups when paired with the appropriate holder

With its cobalt-enhanced HSS, this counterbore not only cuts cleanly but also stands up to repeated use in steel, aluminum, and other alloys. The piloted, flat-bottom geometry ensures you get accurate, repeatable recesses, reducing rework and improving joint strength. Whether you're building a precision jig, assembling machinery, or fabricating automotive components, the Toolex HSS-E Piloted Counterbore for M6 helps you achieve professional results with less effort.