M.a. Ford 30009350 Circuit Board Drill Bit No. 42

Product Description

The M.A. FORD 30009350 is a solid carbide circuit board drill bit engineered for precision drilling in PCB fabrication and light industrial applications. It carries a No. 42 wire gauge diameter of 0.0935 inches (2.37 mm) with a 118-degree drill point angle optimized for clean entry into thin and layered materials. The fast spiral geometry and 35-degree helix angle promote efficient chip evacuation, reducing heat buildup at the cutting edge. With a flute length of 0.625 inches and an overall length of 1.5 inches, this bit fits standard PCB drilling spindles. Licensed HVAC, electrical, and manufacturing trades alike rely on solid carbide tooling like this for consistent hole quality across production runs.

This drill bit is suited for drilling cast iron, non-ferrous metals, steel, and plastics, making it versatile for both circuit board manufacturing environments and general precision machining. The tapered web configuration adds rigidity and reduces deflection during entry, which is critical when drilling small-diameter holes in stacked or multilayer board assemblies. It is sold individually and compatible with standard CNC drill spindles and benchtop drill presses accepting a 0.0935-inch shank diameter.

Key Features

• No. 42 wire gauge diameter: 0.0935 inches (2.37 mm) for precision small-hole drilling
• 118-degree drill point angle for clean, accurate entry in PCB and metal substrates
• Fast spiral design with 35-degree helix angle for efficient chip evacuation
• Solid carbide construction rated for heavy-duty grade performance
• Tapered web configuration reduces deflection and improves hole straightness
• Right-hand cutting direction; uncoated finish for consistent diameter tolerance of -0.0005 to +0.0000 inches

Compatibility

Designed for use in cast iron, non-ferrous metals, steel, and plastics. Compatible with CNC and manual drill spindles accepting a 0.0935-inch round shank. Intended for Series 300 M.A. FORD tooling applications.

Installation Notes

This drill bit is installed by machinists, PCB fabrication technicians, or tool and die professionals using CNC drilling equipment or precision benchtop drill presses. Ensure the spindle collet is clean and properly torqued to prevent runout before drilling. Inspect the cutting edge for chipping before each use, as solid carbide is brittle and sensitive to side loading. Follow the machine manufacturer guidelines for feed rate and spindle speed when working with small-diameter carbide tooling.