Accupro A-6120178R Micro Drill Bit Size 50 Solid Carbide

Product Description

The ACCUPRO A-6120178R is a solid carbide micro drill bit in wire gauge size 50, equivalent to 1.78 mm (0.0701 inches) in diameter. Designed for precision drilling in tight tolerances, it features a 120-degree point angle and a spiral flute geometry that promotes chip evacuation in small-diameter applications. The bright, uncoated finish makes it suitable for use in a range of materials where coating interaction is a concern. With an overall length of 38 mm and a straight-cylindrical shank, this bit fits standard small-diameter chucks and collets used in precision machining, tooling, and fabrication environments. It is sold individually but requires a minimum order of 10 units.

This micro drill bit is used in precision machining, instrument manufacturing, electronics fabrication, and light industrial drilling where small-diameter holes are required. The miniature series designation indicates it is engineered for controlled, repeatable performance in applications demanding tight dimensional accuracy. It is typically run on CNC machining centers, drill presses, or precision hand equipment outfitted with appropriate collet systems. Right-hand cutting direction is standard for conventional spindle rotation setups.

Key Features

• Solid carbide construction for rigidity and wear resistance in small-diameter drilling
• 120-degree standard point angle for accurate entry and reduced walking
• Spiral flute type with regular spiral promotes efficient chip removal
• Bright/uncoated finish — no coating interaction with workpiece material
• Straight-cylindrical shank, 2.00 mm diameter, fits standard collets and chucks
• Right-hand cut for use with conventional clockwise spindle rotation

Compatibility

Designed as a miniature-series replacement or standard-stock micro drill bit for applications requiring wire gauge size 50 (1.78 mm / 0.0701 inches) tooling in straight-cylindrical collet or chuck systems.

Installation Notes

Installation and use of this micro drill bit should be performed by a qualified machinist or tooling technician. Secure the bit fully in a properly sized collet or drill chuck rated for the shank diameter before operation. Coolant-through is not supported; use appropriate external coolant or dry-cut practices as dictated by the workpiece material and shop procedures. Inspect the cutting edges before each use — solid carbide is brittle at this diameter and susceptible to breakage from side loading or improper feed rates.