M.a. Ford 20608900 Screw Machine Drill Bit 0.089 in Carbide

Product Description

The M.A. FORD 20608900 is a screw machine length (short-length) drill bit designed for precision drilling in demanding production and maintenance applications. Built from solid carbide, this bit handles hard and abrasive materials that would quickly wear out high-speed steel tooling. The bright, uncoated finish keeps the surface free of added coating thickness, which is important when holding tight diameter tolerances. The drill measures 0.089 inches (Wire Size 43) in diameter with an overall length of 2 inches and a flute length of 0.5 inches. A 118-degree faceted point and web-thinned geometry reduce entry force and improve chip clearance at the cutting edge. Right-hand spiral flutes evacuate chips efficiently during through-hole and blind-hole operations.

This drill bit is suited for machinists, tool and die makers, and maintenance professionals working on production equipment, fixtures, or precision components. The short flute-to-diameter ratio (3xD) and rigid screw machine length body minimize deflection in high-RPM drilling applications. Recommended workpiece materials include cast iron, non-ferrous metals, stainless steel, and carbon and alloy steels. The straight-cylindrical shank seats directly into standard drill chucks, collets, or quick-change tooling without modification.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive workpiece materials
• 118-degree faceted drill point with web-thinned geometry reduces thrust and improves centering
• Short screw machine length body minimizes deflection at small diameters
• Bright, uncoated finish maintains as-ground diameter accuracy within +0.0000 to -0.0005 inches
• Right-hand, regular spiral flutes with parallel web configuration for consistent chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks and collet systems

Compatibility

Designed for use in drilling cast iron, non-ferrous metals, stainless steel, and steel workpieces. Fits standard drill chucks and collets accepting a 0.089-inch straight-cylindrical shank. Part of the M.A. FORD Series 206 screw machine length carbide drill line.

Installation Notes

Installation and use should be performed by qualified machinists or tool operators familiar with carbide cutting tool handling. Solid carbide tooling is brittle and requires rigid, vibration-free setups to prevent chipping or breakage. Always confirm spindle runout and chuck concentricity before running small-diameter carbide drills at elevated speeds. Follow the machine tool manufacturer and applicable shop safety guidelines when setting speeds and feeds for the workpiece material.