M.a. Ford. 20419900 Carbide Jobber Drill Bit 8 Wire

Product Description

The M.A. FORD. 20419900 is a solid carbide jobber length drill bit in wire gauge size 8, equivalent to 0.1990 inches in diameter. Manufactured under Series 204 with a 118-degree faceted point angle, it features a regular spiral flute, web-thinned tip, and tapered web configuration for improved chip evacuation and reduced thrust in demanding materials. The bright uncoated finish suits general-purpose drilling where coating buildup or heat sensitivity is a concern. With an overall length of 3.0 inches and a 1-3/4-inch flute length, this two-flute bit is sized for standard jobber-length drilling operations in metalworking environments. It is installed and used by machinists, maintenance technicians, and fabricators working in production or job-shop settings.

This drill bit is designed for general-purpose drilling in a range of workpiece materials including cast iron, non-ferrous metals, stainless steel, and carbon and alloy steels, corresponding to material codes K, M, N, and P. The straight-cylindrical shank fits standard drill chucks across benchtop drill presses, CNC machining centers, and hand-held power tools. Its 5xD flute-to-diameter ratio and web-thinned point make it well-suited for applications where entry accuracy and chip flow in harder materials are priorities. The tight diameter tolerance of -0.0005 to 0.0000 inches supports consistent hole quality across repeated operations.

Key Features

• Solid carbide construction for rigidity and wear resistance in metalworking applications
• 118-degree faceted point angle with web-thinned, tapered web for reduced entry thrust
• Regular spiral flute with 5xD flute-by-diameter ratio for efficient chip evacuation
• Bright uncoated finish suitable for general-purpose use across multiple material types
• 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 stock drill bit for wire gauge size 8 applications. Compatible with any standard drill chuck accepting a 0.1990-inch straight-cylindrical shank, including drill presses, CNC machining centers, and handheld power drills. Suitable for workpiece materials including cast iron, non-ferrous metals, stainless steel, and steel alloys.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with metalworking drill operations. Secure the straight-cylindrical shank firmly in a properly sized drill chuck before operation, and verify spindle speed and feed rates are appropriate for the workpiece material and bit diameter. Solid carbide bits are brittle relative to HSS alternatives and should not be used in applications with significant lateral load or vibration without adequate workpiece fixturing. Inspect the bit for chipping or tip damage before each use, as carbide fractures may not be visible without close examination.