M.a. Ford. 20442190 Carbide Jobber Drill Bit 27/64 in

Product Description

The M.A. FORD. 20442190 is a solid carbide jobber length drill bit designed for precision hole-making in demanding industrial and trade applications. Ground to a 118-degree faceted point with web thinning for improved centering, this bit measures 27/64 inches in diameter with an overall length of 4.5 inches. The straight cylindrical shank seats securely in standard drill chucks. Two spiral flutes in a regular helix promote chip evacuation, and the bright uncoated carbide surface is suited for high-speed cutting where coating buildup is a concern. This bit is intended for machinists, toolroom technicians, and fabricators who require tight-tolerance drilling in hard or abrasive materials.

The 20442190 is rated for use in cast iron, non-ferrous metals, stainless steel, and carbon and alloy steel. Its 5xD flute-to-diameter ratio and general purpose grade make it a practical choice for production drilling on CNC machining centers, drill presses, and manual mills where consistent hole quality and diameter tolerance are required. The -0.0005 to 0.0000 inch diameter tolerance supports close-fit hole requirements without secondary reaming in many applications.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive workpiece materials
• 118-degree faceted point with web thinning for positive centering and reduced thrust
• Right-hand spiral flute design promotes efficient chip evacuation
• Bright uncoated finish suitable for applications where coating is not desired or compatible
• Diameter tolerance of -0.0005 to 0.0000 inches for consistent, close-fit hole production
• ISO 9001:2015 certified manufacturing for dimensional consistency

Compatibility

Designed as a general purpose solid carbide jobber length drill bit compatible with standard straight-shank drill chucks on CNC machining centers, drill presses, and milling machines used in metalworking applications.

Installation Notes

Installation and use should be performed by qualified machinists or tool operators familiar with carbide cutting tool handling. Secure the straight cylindrical shank firmly in a properly sized drill chuck or collet before operation to prevent runout. Carbide tooling is brittle and can fracture if subjected to lateral shock or improper feed rates - follow the tool manufacturer or machinery OEM guidelines for speed and feed. Inspect the cutting edge for chipping before each use and do not operate a damaged bit.