M.a. Ford. 20622800 Screw Machine Drill Bit 0.228 in

Product Description

The M.A. FORD. 20622800 is a screw machine length (stub) drill bit engineered for precision drilling in demanding trade and industrial applications. Built from solid carbide, it delivers the hardness and heat resistance required when boring into cast iron, stainless steel, steel, and non-ferrous metals. The bit measures 0.228 inches in diameter with a 118-degree faceted drill point and a web-thinned, parallel-web construction that reduces thrust and improves chip clearance at entry. At 2.5 inches overall length, the stub format provides added rigidity over jobber-length bits, making it well-suited for tight clearances and high-feed drilling environments. Licensed machinists, toolroom technicians, and maintenance trades install this bit in standard drill presses, CNC machining centers, and hand-held drilling equipment.

This Series 206 bit is designed for short-hole applications where rigidity and runout control are critical. The straight-cylindrical shank at 0.228 inches diameter seats directly into standard chucks and collets without adapters. The 1-inch flute length and 3xD flute-to-diameter ratio keep chip evacuation efficient in shallow-to-moderate depth holes. It is a practical choice for production drilling, maintenance repair operations, and fabrication shops working with ferrous and non-ferrous workpieces where a bright, uncoated finish is preferred for general-purpose use.

Key Features

• Solid carbide construction for superior hardness and wear resistance in ferrous and non-ferrous materials
• 118-degree faceted drill point with web thinning reduces entry thrust and improves centering
• Screw machine (stub) length at 2.5 inches overall provides maximum rigidity in tight clearance setups
• Bright/uncoated finish suitable for general-purpose drilling where coating is not required
• Right-hand spiral flute with parallel web configuration promotes consistent chip evacuation
• Diameter tolerance of +0.0000 to -0.0005 inches ensures close-tolerance hole sizing

Compatibility

Designed as a direct-fit replacement or standard-use bit for applications requiring a wire gauge No. 1 (0.228-inch) drill in the 0.200 to 0.250 inch diameter range. Compatible with any drill press, CNC machine, or handheld tool equipped with a chuck or collet accepting a straight-cylindrical 0.228-inch shank. Primary workpiece materials include cast iron, non-ferrous metal, stainless steel, and steel.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or maintenance trades familiar with cutting tool setups and machine operation. Secure the shank fully in the chuck or collet and verify runout before beginning any cut. Always power down and lock out the machine before changing or adjusting tooling. Use appropriate speeds and feeds for the workpiece material to avoid premature edge wear on the carbide cutting geometry.