M.a. Ford. 20420550 Solid Carbide Jobber Drill Bit No.5

Product Description

The M.A. FORD. 20420550 is a solid carbide jobber length drill bit in wire gauge size No. 5, with a decimal diameter of 0.2055 inches. It features a 118-degree faceted point and a two-flute right-hand spiral configuration for efficient chip evacuation. The bright uncoated finish suits applications where coating-related heat concerns are a factor. Overall length is 3.0 inches with a 1.75-inch flute length, providing a 5xD flute-to-diameter ratio. The straight-cylindrical shank measures 0.2055 inches in diameter. A web-thinned, tapered web design reduces entry force and improves centering. This bit is installed by machinists, tool-and-die professionals, and maintenance technicians working in production or field environments.

This drill bit is engineered for general-purpose drilling across a range of workpiece materials including cast iron, non-ferrous metals, stainless steel, and steel. The Series 204 design makes it suitable for use in CNC machining centers, drill presses, and hand-held power tools where a straight-shank bit is required. Diameter tolerance is held to -0.0005 to 0.0000 inches, making it appropriate for close-tolerance hole applications. It does not support coolant-through delivery, so external coolant or cutting fluid application is recommended when drilling harder alloys or stainless steel.

Key Features

• Solid carbide construction for extended tool life in abrasive and hard workpiece materials
• 118-degree faceted point with web-thinned, tapered web for reduced thrust and accurate starting
• Right-hand, regular spiral flute geometry optimized for general-purpose drilling
• Bright uncoated finish compatible with a wide range of cutting fluids and materials
• Tight diameter tolerance of -0.0005 to 0.0000 inches for consistent hole sizing
• ISO 9001:2015 certified manufacturing for dimensional and quality consistency

Compatibility

Designed as a general-purpose replacement or production drill bit for applications requiring a No. 5 wire gauge size (0.2055 inches) straight-shank carbide bit. Compatible workpiece material codes K, M, N, and P cover cast iron, non-ferrous metals, stainless steel, and steel per industry classification standards.

Installation Notes

Install in a drill press, CNC spindle, or hand-held power tool using a chuck rated for the 0.2055-inch straight-cylindrical shank. Ensure the shank is fully seated and the chuck is tightened securely before operation. Apply external cutting fluid or mist coolant when drilling stainless steel or cast iron to manage heat and extend tool life. Inspect the cutting edges before each use and remove the bit from service if chipping or edge wear is observed, as carbide is brittle and susceptible to fracture if run in a damaged state.