M.a. Ford. 20528120T 9/32 Inch Carbide Screw Machine Drill Bit

Product Description

The M.A. FORD. 20528120T is a solid carbide screw machine length drill bit designed for high-precision drilling in demanding production and job-shop environments. Built to Series 205 specifications, it features a 135-degree split point for self-centering entry and reduced thrust, a slow spiral flute geometry for chip control, and a web-thinned, parallel web configuration that improves cutting efficiency. The straight-cylindrical shank measures 0.2812 inches in diameter, matching the drill diameter for consistent tool holding. At 2-11/16 inches overall length with a 1-1/2 inch flute length, this is a compact, rigid drill suited for short-reach applications where chatter and deflection must be minimized.

This drill bit is intended for use in CNC machining centers, drill presses, and manual machines where screw machine length geometry provides added rigidity over jobber-length bits. Primary workpiece materials include cast iron, non-ferrous metals, stainless steel, and steel. The solid carbide construction makes it well-suited for high-speed, high-feed applications in production environments. It is sold individually and is appropriate for use by machinists, tool-and-die tradespeople, and maintenance professionals working with tight-tolerance hole requirements.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• 135-degree split point reduces thrust and enables self-centering without a center punch
• Slow spiral flute geometry promotes controlled chip evacuation in difficult materials
• Web-thinned parallel web reduces cutting resistance and improves penetration rate
• Screw machine length body provides increased rigidity versus standard jobber-length drills
• Diameter tolerance of +0.0000 to -0.0005 inches supports tight-tolerance hole applications

Compatibility

Designed as an OEM-style replacement or direct-use tooling option for applications requiring a 9/32 inch (0.2812 inch) screw machine length carbide drill in cast iron, non-ferrous metal, stainless steel, or steel workpieces within the 0.2500 to 0.3000 inch drill bit size range.

Installation Notes

Installation and use of carbide drill bits should be performed by qualified machinists familiar with proper tool holding and speeds-and-feeds for carbide tooling. Secure the straight-cylindrical shank in a precision collet or drill chuck rated for the spindle speed being used. Carbide is brittle - avoid side loading, interrupted cuts without proper parameters, or running the tool in reverse. Follow machine manufacturer guidelines and applicable shop safety protocols when setting up drilling operations.