Accupro A-6120057R Micro Drill Bit Size 74 Solid Carbide

Product Description

The ACCUPRO A-6120057R is a size 74 wire gauge micro drill bit engineered for precision small-diameter drilling in tight-tolerance applications. Constructed from solid carbide, it delivers the rigidity and wear resistance required when drilling hard materials at micro scales. The bit features a 120-degree point angle with a standard point type and a bright, uncoated finish. With a 25 mm overall length and a 1.00 mm straight-cylindrical shank, this bit is sized for micro and miniature drilling work where accuracy is critical. The spiral flute with regular helix promotes chip evacuation in shallow-depth bores typical of this diameter class.

This bit is suited for machining operations requiring wire gauge sizing at the lower end of the drill scale. Typical applications include precision hole drilling in electronics components, instrument parts, jigs, and fixtures where hole diameter tolerance is held close. The straight-cylindrical shank seats directly into collet-style chucks and micro drill chucks found on CNC machining centers, manual drill presses, and benchtop micro-drilling stations. Right-hand cutting direction is standard for conventional clockwise spindle rotation.

Key Features

• Solid carbide construction for maximum rigidity and tool life at micro diameters
• Size 74 wire gauge, equivalent to 0.0224 inch (decimal) bore diameter
• 120-degree point angle for clean entry and reduced walking on hard surfaces
• Bright, uncoated finish compatible with a wide range of workpiece materials
• Spiral flute, regular helix for effective chip removal in micro-depth drilling
• 1.00 mm straight-cylindrical shank for use in standard collet and micro drill chucks

Compatibility

Designed as an OEM-style miniature series replacement drill bit for use in any machine tool or fixture accepting a 1.00 mm straight-cylindrical shank with right-hand rotation.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or tooling technicians familiar with micro-diameter carbide tooling. Secure the shank fully in a collet or chuck rated for the shank diameter before spindle engagement. Carbide is brittle at small diameters and is susceptible to breakage from side loading, runout, or improper feed rates. Never force the bit through material or reverse spindle direction under load.