Accupro A-6120089R Micro Drill Bit 65 0.0350 in Solid Carbide

Product Description

The ACCUPRO A-6120089R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. Sized at wire gauge 65 with a decimal diameter of 0.0350 inches, this bit features a 120-degree drill point angle and a right-hand cutting direction. The bright/uncoated finish means the carbide substrate is exposed for maximum hardness and edge retention at small diameters. With an overall length of 30.00 mm and a straight-cylindrical shank measuring 1.50 mm in diameter, it is sized for use in micro-drilling fixtures, CNC machining centers, and high-precision drill presses. Machinists and tool-and-die professionals typically specify this bit for circuit board work, instrument components, and fine metalwork.

This bit is suited for applications requiring repeatable, small-diameter hole placement in materials such as metals, composites, and plastics. The miniature series designation indicates it is engineered for fine-pitch drilling where standard jobber-length bits are too large or too long to achieve the required precision. A spiral flute with regular spiral geometry aids chip evacuation in shallow-depth micro holes. It is sold individually with a minimum order quantity of 10 units.

Key Features

• Wire gauge size 65 with 0.0350-inch decimal diameter for micro-tolerance drilling
• 120-degree drill point angle suited for standard entry geometry on hard materials
• Solid carbide construction for hardness and wear resistance at small diameters
• Bright/uncoated finish preserves substrate integrity without coating buildup at tight tolerances
• Straight-cylindrical shank at 1.50 mm diameter for secure chuck retention
• Spiral flute geometry supports chip evacuation in micro-depth drilling operations

Compatibility

Designed for use in CNC machining centers, micro-drilling fixtures, and precision drill presses accepting a 1.50 mm straight-cylindrical shank in the miniature drill bit series.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician familiar with micro-diameter tooling. Secure the shank fully in a collet or chuck rated for the 1.50 mm shank diameter before operation. At this drill diameter, runout must be minimized to prevent bit breakage — verify spindle and collet concentricity before use. Coolant-through is not supported on this bit; use external coolant or cutting fluid appropriate for the workpiece material as needed.