Sgs 07355 Circuit Board Drill Bit 5/64 in Solid Carbide

Product Description

The SGS 07355 is a solid carbide circuit board drill bit engineered for precise, small-diameter drilling in electronics and light industrial applications. It features a 5/64 inch (0.0781 inch) diameter with a 1/8 inch shank and a 130-degree four-facet point that centers cleanly and reduces walking on entry. The uncoated solid carbide construction delivers the rigidity and edge retention needed when drilling through fiber-reinforced polymers, plastics, and non-ferrous metals. Overall length is 1-1/2 inches with a 3/8 inch flute length. Right-hand cut with a regular spiral and a 30-degree helix angle. Installed by machinists, electronics fabricators, and precision trades.

This bit is suited for drilling printed circuit boards, composite laminates, and thin non-ferrous workpieces in both production and repair environments. The four-facet point geometry minimizes delamination and breakout on entry and exit, which is critical when working with fiber-reinforced polymer boards and delicate substrates. Compatible material types include aluminum, cast iron, cobalt alloy, copper alloy, fiber-reinforced polymers, nickel, plastics, stainless steel, and titanium. The tapered web configuration supports chip evacuation in deep or blind holes at this diameter range.

Key Features

• 5/64 inch (0.0781 inch) cutting diameter with tight tolerance of -0.0003 to +0.0000 inch
• 130-degree four-facet point for accurate entry and reduced walking
• Solid carbide construction for rigidity and edge retention in hard and abrasive materials
• 1/8 inch shank diameter fits standard precision chucks and collets
• 30-degree helix angle with regular spiral and tapered web for efficient chip evacuation
• Uncoated finish suitable for aluminum, plastics, fiber-reinforced polymers, stainless steel, and titanium

Compatibility

Designed for use in drilling circuit boards, composite laminates, and thin-section workpieces in materials including aluminum, cast iron, cobalt alloy, copper alloy, fiber-reinforced polymers, nickel, plastics, stainless steel, and titanium. Material application codes: K, M, N, P, S.

Installation Notes

Install in a precision drill press, CNC drilling machine, or high-speed spindle using a collet or chuck sized for a 1/8 inch shank. Secure the workpiece firmly to prevent movement at entry and exit. Use appropriate spindle speeds for the workpiece material and this diameter range - excessive feed rate at small diameters can cause bit breakage. Inspect the cutting edge before each use; solid carbide bits are brittle and should be handled carefully to avoid chipping.