M.a. Ford 30208900 Circuit Board Drill Bit No 43

Product Description

The M.A. FORD 30208900 is a solid carbide circuit board drill bit sized to wire gauge No. 43, with a decimal diameter of 0.0890 inches (2.26 mm). It features a 130-degree drill point angle and a fast spiral with a 35-degree helix angle, designed for clean, accurate holes in printed circuit boards and precision electronic assemblies. The 1/8-inch (3.18 mm) straight shank and tapered web construction support rigidity and chip evacuation during high-speed drilling operations. This bit is intended for use by machinists, electronics technicians, and PCB fabrication professionals working with small-diameter, tight-tolerance drilling applications.

This drill bit is well suited for drilling circuit boards and thin-stock precision components in both production and bench-top environments. Its solid carbide construction and fast spiral geometry make it effective across a broad range of workpiece materials, including cast iron, non-ferrous metals, alloy steel, carbon steel, stainless steel, high-temperature alloys, and titanium. The right-hand cutting direction and uncoated finish are standard for applications where dimensional tolerance and hole quality are the primary concerns. It is a single-piece, individually packaged bit from M.A. FORD Series 302.

Key Features

• No. 43 wire gauge size — 0.0890 inches (2.26 mm) diameter with a tolerance of -0.0003 to +0.0000 inches
• 130-degree drill point angle for reduced thrust and accurate hole entry on thin substrates
• Fast spiral, 35-degree helix angle promotes efficient chip evacuation in deep or stacked-board drilling
• Solid carbide construction delivers hardness and wear resistance for extended tool life at high RPM
• Tapered web design increases rigidity while reducing chisel-edge contact area
• Right-hand cut, uncoated finish — suitable for dry or mist-lubricated PCB and precision metalworking operations

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for applications requiring a No. 43 wire gauge hole in circuit board fabrication and precision machining setups. Compatible workpiece materials include cast iron, non-ferrous metals, alloy steel, carbon steel, stainless steel, high-temperature alloys, and titanium per M.A. FORD Series 302 specifications.

Installation Notes

This drill bit is installed by machinists and electronics assembly technicians using a drill press, CNC drilling machine, or precision hand drill with a collet or chuck rated for 1/8-inch shanks. Before mounting, ensure the spindle and collet are clean and free of debris to maintain runout accuracy at the small diameters involved. Solid carbide tooling is brittle — avoid side loading, interrupted cuts without proper feed rate adjustment, or over-tightening the collet beyond equipment specifications. Always verify spindle speed against the manufacturer recommendations for the specific workpiece material and drill diameter before operation.