Sgs 07353 Circuit Board Drill Bit Size 48 Solid Carbide

Product Description

The SGS 07353 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and related small-diameter applications. Ground to a 130-degree four-facet point, this bit delivers clean entry and reduced thrust force when drilling through layered and composite materials. The wire gauge size 48 corresponds to a decimal diameter of 0.076 inches (1.93 mm), with a 1/8 inch (0.125 inch) straight shank. At 1.5 inches overall length, it fits standard PCB drilling chucks and high-speed spindles. The two-flute regular spiral geometry with a 30-degree helix angle promotes efficient chip evacuation in both rigid and flexible substrates. The uncoated finish maintains tight dimensional tolerances, held to -0.0003 to +0.0000 inches on diameter.

This bit is intended for use in precision machining and circuit board drilling operations across a range of materials including aluminum, copper alloy, plastics, fiber-reinforced polymers, nickel, cobalt alloy, stainless steel, and titanium. It is suited for production environments requiring consistent, repeatable hole quality in thin or layered workpieces. Electronics manufacturers, PCB fabricators, and precision machine shops are the primary users. The tapered web configuration adds strength at the core without sacrificing cutting performance at small diameters.

Key Features

• Wire gauge size 48 with 0.076 inch decimal diameter and 1.93 mm metric equivalent
• 130-degree four-facet point for clean entry and reduced walking on hard substrates
• Solid carbide construction for rigidity and wear resistance at small diameters
• 30-degree helix angle with regular spiral for consistent chip evacuation
• Diameter tolerance held to -0.0003 to +0.0000 inches for repeatable hole sizing
• Uncoated finish suitable for non-ferrous metals, plastics, and fiber-reinforced polymers

Compatibility

Designed for use with standard 1/8 inch PCB drilling chucks and CNC spindles in circuit board and precision small-diameter drilling applications across the material types listed in the specifications.

Installation Notes

Installation and use should be performed by qualified machinists or PCB fabrication technicians familiar with small-diameter carbide tooling. Secure the shank fully in a collet or chuck designed for 1/8 inch tooling before operating the spindle. Carbide bits are brittle - avoid lateral loading, impacts, or use in hand drills where runout cannot be controlled. Inspect the cutting edge before each use and replace at first sign of chipping or dimensional drift.