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The TITAN USA TC20031 is a screw machine length drill bit designed for high-precision hole-making in demanding shop and field applications. Built from solid carbide, this bit delivers superior hardness and heat resistance compared to high-speed steel alternatives, making it well-suited for drilling hard metals, cast iron, and abrasive materials. The 135-degree split point geometry reduces walking at entry and lowers required thrust force, which improves hole location accuracy. At 3 inches overall length, the screw machine format provides added rigidity over jobber-length bits, reducing deflection and improving straightness in short-hole applications. Installers and machinists working with CNC machines, drill presses, or hand-held equipment will find this bit appropriate for precision work.
This bit fits applications where a stubby, rigid cutting tool is preferred over a standard-length drill. Screw machine length bits are commonly used in production drilling, fixture work, and any setup where minimizing runout and deflection is critical. The straight cylindrical shank and regular spiral flute design make this compatible with standard drill chucks and collet holders across a wide range of machine types. It is sized at 31/64 inches (0.4844 inches decimal), placing it in the 0.4500 to 0.5000 inch drill size range.
Designed as a direct-fit replacement or upgrade for screw machine length drill bits in the 0.4500 to 0.5000 inch size range, compatible with standard drill chucks and collet-style toolholders accepting a straight cylindrical shank.
This drill bit is intended for use by machinists, toolroom technicians, and trade professionals operating drill presses, CNC machining centers, or similar equipment. Before mounting, ensure the machine spindle is fully stopped and locked out per standard lockout/tagout procedures. Secure the shank fully in the chuck or collet to the correct engagement depth before running the spindle. Do not exceed the recommended feed and speed parameters for the workpiece material and machine setup.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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