Hertel 30004650 Circuit Board Drill Bit No. 56 1.18mm

Product Description

The HERTEL 30004650 is a solid carbide circuit board drill bit sized to wire gauge No. 56, with a decimal diameter of 0.0465 inches (1.18mm). It is built for precision drilling in printed circuit board fabrication and fine-component manufacturing environments. The bit features a 118-degree drill point angle, a fast spiral flute design, and a tapered web configuration that promotes chip evacuation and reduces heat buildup at small diameters. Right-hand cutting direction and a 35-degree helix angle support clean, accurate entry in thin or laminated materials. This bit is installed and used by machining and electronics manufacturing professionals requiring tight tolerances in miniature-diameter drilling.

This circuit board drill bit is suited for drilling applications in cast iron, non-ferrous metals, and steel, in addition to its primary use in printed circuit board materials. The fast spiral geometry makes it well-suited for production environments where hole quality and cycle time both matter. With an overall length of 1.5 inches and a flute length of 0.625 inches (15.88mm), it is compact and designed for use in CNC drilling machines and precision drill presses common in electronics assembly and light machining operations.

Key Features

• Wire gauge No. 56 diameter: 0.0465 inches (1.18mm) for precision miniature drilling
• Solid carbide construction for hardness, wear resistance, and dimensional stability
• 118-degree drill point angle for controlled entry and minimal material deformation
• Fast spiral flute with tapered web promotes chip clearance in fine-diameter work
• 35-degree helix angle supports clean hole finish in circuit board and metallic substrates
• Bright polished finish reduces friction and aids chip flow

Compatibility

Designed as an OEM-style replacement or direct-use circuit board drill bit for CNC drilling machines and precision drill presses accepting a 1.18mm shank diameter. Suitable for use in cast iron, non-ferrous metals, and steel applications as noted by the manufacturer.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or electronics manufacturing technicians familiar with high-speed precision drilling equipment. Ensure the drill chuck or collet is clean and properly torqued to the machine manufacturer's specification before operation. Verify spindle speed and feed rate settings are appropriate for the workpiece material and bit diameter before engaging the cut. Inspect the bit for chipping or wear before each use, as solid carbide bits at small diameters are brittle and should not be used if visibly damaged.