M.a. Ford. 20618500 Carbide Drill Bit 0.185 in Screw Machine

Product Description

The M.A. FORD. 20618500 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding trade and industrial applications. With a 0.185-inch diameter (Wire Size #13) and a 118-degree faceted point, this bit delivers clean, accurate entry in a short, rigid package. The bright/uncoated finish suits applications where coatings would be unnecessary or counterproductive. At 2-3/16 inches overall length with a 3/4-inch flute length, the screw machine profile provides increased rigidity compared to jobber-length bits, reducing deflection and improving hole accuracy in short-depth applications. Web thinning reduces thrust force at the point, making this bit well suited for CNC and manual drilling operations alike.

This drill bit is intended for use on cast iron, non-ferrous metals, stainless steel, and steel. Its short flute-to-diameter ratio (3xD) and parallel web configuration make it a practical choice for spot drilling, through-hole drilling, and applications where hole position accuracy is critical. The straight cylindrical shank with a 0.185-inch shank diameter seats directly into standard drill chucks and collets without requiring special toolholding. It is typically used by machinists, tool and die workers, and maintenance technicians working with manual mills, drill presses, or CNC machining centers.

Key Features

• Solid carbide construction for extended tool life in ferrous and non-ferrous materials
• 118-degree faceted point with web thinning for reduced entry thrust and improved centering
• Screw machine (short) length for increased rigidity and reduced deflection
• Right-hand spiral flute for efficient chip evacuation on standard drilling operations
• Straight cylindrical shank fits standard drill chucks and collets
• Bright/uncoated finish suitable for use with or without cutting fluid

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide screw machine drill bit for applications requiring a 0.185-inch (Wire Size #13) hole diameter in cast iron, non-ferrous metal, stainless steel, or steel workpieces.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with proper drill press or CNC spindle setup. Ensure the spindle and workpiece are fully secured before initiating a cut. Verify chuck or collet runout is within acceptable tolerance to avoid premature bit breakage, as solid carbide is more brittle than high-speed steel. Use appropriate cutting fluid or coolant as recommended for the workpiece material when drilling stainless steel or hard ferrous alloys.