M.a. Ford 20507870T Carbide Screw Machine Drill Bit 0.0787 in

Product Description

The M.A. FORD 20507870T is a solid carbide screw machine length drill bit designed for precision drilling in demanding materials. With a 0.0787 inch (2.00 mm) diameter and a 135-degree split point, this bit delivers accurate starts and reduced thrust in production environments. The coated finish extends wear resistance during high-cycle use. A right-hand spiral flute with slow helix geometry controls chip evacuation, making this bit well suited for cast iron, stainless steel, carbon steel, and non-ferrous metals. Overall length is 1.7323 inches (44.00 mm), keeping the setup compact and rigid for short-hole applications. Machinists and toolroom technicians are the primary installers of this style of bit.

This drill bit fits screw machine length applications where stub-length rigidity is required and standard jobber-length bits introduce deflection. The 3xD flute-to-diameter ratio provides adequate chip clearance without sacrificing stiffness. The straight cylindrical shank measures 0.0787 inch in diameter and 0.9843 inch (25.00 mm) in length, compatible with standard drill chucks and collet systems used on CNC machining centers, drill presses, and screw machines. Primary workpiece materials include cast iron, non-ferrous metals, stainless steel, and steel. The parallel web configuration and web-thinned geometry reduce entry force on hard materials.

Key Features

• Solid carbide construction for rigidity and heat resistance in hard-material drilling
• 135-degree split point for self-centering starts and reduced walking on hard surfaces
• Slow spiral flute geometry engineered for controlled chip flow in cast iron and stainless steel
• Web-thinned, parallel web design reduces thrust and entry force
• Coated finish improves surface hardness and tool life in high-cycle applications
• Screw machine length provides maximum rigidity for short-hole, close-tolerance drilling

Compatibility

Designed for use in standard drill chucks and collet systems accepting a 0.0787 inch straight cylindrical shank. Suitable for CNC machining centers, drill presses, and screw machines. Rated for drilling cast iron, non-ferrous metals, stainless steel, and steel workpiece materials as specified by the manufacturer.

Installation Notes

Installation is performed by machinists and toolroom technicians. Secure the shank fully in the chuck or collet to the specified grip depth before operation. Ensure the spindle and workpiece are properly fixtured to minimize runout, which is especially critical at this diameter. Inspect the cutting edges for chipping before each use, as solid carbide is brittle and sensitive to side-loading or interrupted cuts.