Harvey Tool FBD0492-C3 Flat Bottom Micro Drill Bit

Product Description

The HARVEY TOOL FBD0492-C3 is a solid carbide micro drill bit engineered for flat-bottom drilling in precision machining applications. With a cutting diameter of 1.25 mm (0.0492 inches) and a 180-degree flat point angle, this drill produces a true flat-bottom hole without the conical relief left by standard twist drills. The AlTiN coating provides elevated heat resistance and extended tool life in hard and abrasive workpiece materials. Right-hand cutting geometry and a spiral flute design support efficient chip evacuation in tight bores. Licensed machinists and precision CNC operators are the primary users of this tool.

This drill bit is suited for precision CNC milling centers and drill presses where flat-bottom blind holes, counterbores, or recessed features are required. The 3.00 mm shank diameter accommodates standard collets and small-bore tool holders commonly found in Swiss-type lathes, micro-machining cells, and high-speed machining centers. The 8.50 mm flute length (0.3350 inches) and 50.00 mm overall length make this bit appropriate for shallow-to-moderate depth flat-bottom features in tight-tolerance components.

Key Features

• 180-degree flat point angle produces true flat-bottom holes with no center pip
• AlTiN coating improves heat and wear resistance in hard materials
• Solid carbide construction maintains rigidity at small diameters
• Right-hand cutting direction compatible with standard CNC spindle rotation
• h6 diameter tolerance ensures precise fit in collet and tool holder setups
• Spiral flute geometry promotes chip evacuation in blind hole drilling

Compatibility

Designed as an OEM-style replacement and direct-fit tool for CNC machining centers and drill presses using 3.00 mm shank collets or tool holders in the Miniature High Performance Drills - Flat Bottom Drill series.

Installation Notes

Installation and use of this tool should be performed by trained machinists familiar with CNC tooling setup and micro-diameter drill handling. Secure the 3.00 mm shank in a collet or tool holder rated for the intended spindle speed before operation. Ensure the machine spindle is fully stopped and the control is in a safe state before installing or removing the bit. Avoid side-loading or prying forces on the shank, as micro-diameter carbide tools are brittle and susceptible to fracture under lateral stress.