Accupro A-6100044R Micro Drill Bit 0.44 Mm Solid Carbide

Product Description

The ACCUPRO A-6100044R is a solid carbide micro drill bit designed for precision drilling in small-diameter applications. With a 0.44 mm (0.0173 inch) cutting diameter and a 120-degree point angle, this bit delivers accurate hole entry and consistent performance in tight-tolerance work. The bright, uncoated finish suits a wide range of workpiece materials. At 25 mm overall length and a 1.00 mm straight-cylindrical shank, the A-6100044R fits standard miniature drill chucks and collets. The right-hand spiral flute geometry promotes efficient chip evacuation during the cut. This bit is typically used by machinists, toolmakers, and precision fabricators working on fine components.

This micro drill bit is suited for small-diameter drilling operations in metalworking, electronics manufacturing, instrument fabrication, and precision machining environments. Its miniature series designation means it is intended for benchtop drill presses, CNC machining centers, and precision hand-piece setups where sub-millimeter accuracy is required. The 3.60 mm flute length provides adequate chip clearance for shallow to moderate-depth holes at this diameter. No coolant-through capability means it is best applied in low-feed, low-speed passes with external lubrication or dry cutting depending on the substrate.

Key Features

• 0.44 mm (0.0173 inch) cutting diameter for sub-millimeter precision work
• Solid carbide construction for rigidity and wear resistance at small diameters
• 120-degree standard point angle for accurate hole location and clean entry
• Right-hand cut with regular spiral flute for efficient chip evacuation
• 1.00 mm straight-cylindrical shank for compatibility with standard miniature collets and chucks
• Bright uncoated finish suitable for use across a range of materials

Compatibility

Designed as an OEM-style replacement and standard tooling option for miniature drill bit applications requiring a 1.00 mm straight-cylindrical shank and 0.44 mm cutting diameter.

Installation Notes

Installation of micro drill bits should be performed by qualified machinists or tooling technicians familiar with small-diameter tooling. Secure the shank fully in the collet or chuck before operation and verify runout with a dial indicator when tolerances are critical. At sub-millimeter diameters, feed rate and spindle speed must be carefully controlled to prevent bit breakage. Always power down and lock out the machine before changing tooling.