M.a. Ford. 20402250 Carbide Drill Bit No. 74

Product Description

The M.A. FORD. 20402250 is a solid carbide jobber length drill bit designed for precision drilling in demanding materials. It carries a No. 74 wire gauge size, equivalent to 0.0225 inches in diameter, and features a 118-degree faceted drill point. The bright, uncoated finish indicates this bit is intended for general-purpose applications where coating is not required. With an overall length of 1.5 inches and a 0.25-inch flute length, this is a compact, stiff drill built for small-diameter work. Installed by machinists and tool-and-die professionals, it suits CNC machining centers, drill presses, and precision hand-held drilling equipment alike.

This drill bit is suited for production and maintenance drilling in cast iron, non-ferrous metals, stainless steel, and steel. Its regular spiral flute and web-thinned point geometry reduce thrust and improve chip evacuation in these materials. The straight-cylindrical shank fits standard collets and drill chucks sized for 0.0225-inch shank diameters. Typical applications include precision hole-making in tight-tolerance components where a small wire gauge drill is required. The 5xD flute-to-diameter ratio provides rigidity appropriate for short, accurate holes.

Key Features

• Solid carbide construction for superior hardness and wear resistance compared to high-speed steel
• No. 74 wire size at 0.0225 inches diameter with tight tolerance of -0.0005 to 0.0000 inches
• 118-degree faceted drill point with web-thinned, tapered web for reduced entry thrust
• Right-hand cut, regular spiral flute design promotes efficient chip removal
• Bright, uncoated finish suitable for general-purpose drilling across multiple workpiece materials
• ISO 9001:2015 certified manufacturing for consistent dimensional quality

Compatibility

Designed as a general-purpose solid carbide jobber drill for use in cast iron, non-ferrous metal, stainless steel, and steel workpieces. Compatible with any standard drill chuck or collet accepting a 0.0225-inch straight-cylindrical shank.

Installation Notes

This drill bit is installed by machinists, toolmakers, and maintenance technicians in machine shop environments. Before mounting, ensure the spindle is fully stopped and the chuck or collet is clean and free of debris to maintain concentricity. Use appropriate cutting fluid or coolant when drilling stainless steel or cast iron to extend tool life, noting this bit does not support internal coolant-through delivery. Follow machine manufacturer guidelines for spindle speed and feed rate for the workpiece material and bit diameter.