Accupro A-6120102R Micro Drill Bit 1.02 Mm Solid Carbide

Product Description

The ACCUPRO A-6120102R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. At 1.02 mm (0.0402 inches) in diameter, this bit targets miniature-scale work where standard drills are too large to be practical. The 120-degree drill point angle provides a stable entry geometry suited to hard and brittle materials. With an overall length of 30.00 mm and a straight-cylindrical shank measuring 1.50 mm in diameter, the A-6120102R fits collet-style toolholders common to CNC machining centers, micro-drilling stations, and precision bench drill presses. It is sold individually but carries a minimum order quantity of 10 units.

This bit is used in applications that require small-diameter through-holes or blind holes in metals, printed circuit board substrates, composites, and similar hard materials. The miniature series designation targets machinists, toolmakers, and precision fabricators working on components where hole diameter tolerances are critical. Typical install scenarios include CNC production runs, prototype machining, and precision repair work performed by skilled tradespeople and manufacturing technicians.

Key Features

• Solid carbide construction for hardness and wear resistance in demanding materials
• 1.02 mm (0.0402 inch) diameter for micro-scale precision drilling
• 120-degree point angle for stable entry and reduced walking on hard surfaces
• Bright/uncoated finish — no coating buildup to affect tight diameter tolerances
• Spiral flute with regular spiral type for consistent chip evacuation
• Straight-cylindrical shank at 1.50 mm diameter for secure collet clamping

Compatibility

Designed as a miniature-series replacement or stock drill bit for use in collet-style toolholders and chucks that accept a 1.50 mm straight-cylindrical shank, suitable for CNC machining centers and precision micro-drilling equipment.

Installation Notes

Installation and use of this bit should be performed by machinists or qualified tradespeople familiar with micro-drilling practices. Ensure the spindle and toolholder are fully powered down and secured before loading or removing the bit. Verify collet size matches the 1.50 mm shank diameter to prevent runout. Carbide bits are brittle — avoid side-loading and do not use in hand-held or handheld rotary tools where lateral forces cannot be controlled.