M.a. Ford. 20402800 Jobber Length Drill Bit Size 70

Product Description

The M.A. FORD. 20402800 is a jobber length drill bit engineered for precision drilling in demanding trade and industrial applications. Built from solid carbide, this bit carries a wire gauge size of 70, which equals 0.0280 inches in decimal diameter. It features a 118-degree faceted point angle, a two-flute spiral configuration, and a web-thinned, tapered web design that reduces entry force and improves chip evacuation. The overall length is 1.5 inches, with a flute length of 0.3125 inches and a straight-cylindrical shank diameter of 0.0280 inches. Manufactured to ISO 9001:2015 standards, this bit is a general-purpose tool suited for machinists and fabricators working in production or maintenance environments.

This drill bit is designed for use in cast iron, non-ferrous metals, stainless steel, and carbon steel. Its solid carbide construction makes it appropriate for CNC drilling operations and precision hand-fed drilling where high hardness and wear resistance are required. The bright, uncoated finish allows close inspection of the cutting edges after use. With a 5xD flute-to-diameter ratio and a regular spiral type, it handles standard jobber length drilling tasks in metalworking shops, HVAC fabrication, and light manufacturing settings where small-diameter accuracy is critical.

Key Features

• Solid carbide construction for superior hardness and wear resistance in metal drilling
• Wire gauge size 70 (0.0280 inches) with a diameter tolerance of -0.0005 to 0.0000 inches
• 118-degree faceted point angle for accurate self-centering entry
• Web-thinned, tapered web reduces thrust and improves chip clearance
• Two-flute regular spiral design with a 5xD flute-to-diameter ratio
• ISO 9001:2015 certified manufacturing for consistent dimensional quality

Compatibility

Designed as a general-purpose jobber length drill bit compatible with standard drill chucks and CNC spindles that accept a 0.0280-inch straight-cylindrical shank. Suitable for drilling cast iron, non-ferrous metals, stainless steel, and steel workpieces.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade professionals familiar with small-diameter carbide tooling. Secure the straight-cylindrical shank firmly in a precision drill chuck or collet before operation to prevent runout that can fracture carbide at this diameter. Carbide is brittle and susceptible to breakage from lateral loading or improper feed rates, so follow machine manufacturer guidelines for spindle speed and feed. Inspect the cutting edges before each use and replace the bit if chipping or wear is observed.