Accupro A-6100074R No. 69 Micro Drill Bit Solid Carbide

Product Description

The ACCUPRO A-6100074R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It carries a No. 69 wire gauge size, equivalent to 0.0291 inches in diameter, and features a 120-degree standard point angle for accurate entry and reduced walking on hard materials. The spiral flute geometry promotes chip evacuation in small-diameter bores. With an overall length of 30 mm and a straight-cylindrical shank measuring 1.50 mm in diameter, this bit fits standard collet-style toolholders used in CNC machining, benchtop drill presses, and hand-held precision drilling equipment. It ships uncoated in a bright finish, leaving the carbide substrate exposed for high-speed performance in non-ferrous metals, plastics, and composites.

This micro drill bit is suited for machinists, tool-and-die technicians, and PCB fabricators who require consistent hole quality at sub-0.030-inch diameters. The miniature series designation indicates it is built for small-scale precision work, including instrument components, electronics housings, and fine mechanical assemblies. Its right-hand cutting direction is compatible with standard spindle rotation on conventional milling and drilling machines. The 5.60 mm flute length provides adequate chip clearance for shallow through-holes and blind holes typical in this size class.

Key Features

• No. 69 wire size at 0.0291 inches for precision small-diameter drilling
• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• 120-degree standard point angle reduces deflection on entry
• Spiral flute geometry with 5.60 mm flute length supports chip evacuation in shallow bores
• Straight-cylindrical shank at 1.50 mm diameter fits standard collet toolholders
• Bright/uncoated finish, right-hand cut, regular spiral — no coolant-through requirement

Compatibility

Designed as an OEM-style miniature series solid carbide drill bit compatible with collet-style toolholders and precision drill chucks accepting a 1.50 mm straight-cylindrical shank. Confirm spindle speed and feed rate are appropriate for 0.0291-inch solid carbide tooling before use.

Installation Notes

Installation and use of this drill bit should be performed by a qualified machinist or tool operator familiar with small-diameter carbide tooling. Secure the shank firmly in a properly sized collet or drill chuck before operation — carbide micro drills are brittle and will fracture if subjected to side loads or runout. Power down and de-energize the machine spindle completely before changing tooling. Follow the machine manufacturer's recommended spindle speeds for the workpiece material and this diameter to avoid premature breakage.