Titan Usa TC20257 Screw Machine Drill Bit Size 57

Product Description

The TITAN USA TC20257 is a screw machine length drill bit designed for high-precision drilling in metalworking and machining applications. Built from solid carbide, this bit delivers superior hardness and heat resistance compared to high-speed steel tooling. It carries a wire gauge size 57 designation, equivalent to 0.0430 inches (1.10 mm) in diameter, making it suited for small-hole drilling where tight tolerances are required. The 135-degree split point reduces walking and minimizes the need for a center punch before entry. The bright, uncoated finish means no coating thickness to account for when hole size precision is critical. Machinists and tool-and-die professionals are the primary users of this bit.

This bit is used in CNC machining centers, manual drill presses, and bench-top machines where screw machine length tooling is preferred for rigidity and minimal deflection. Its short overall length of 1.5 inches limits overhang and flex, which is essential when drilling small-diameter holes in steel, aluminum, brass, cast iron, and similar materials. It is appropriate for production shops, maintenance machining, and precision fabrication work requiring consistent, repeatable hole geometry in tight tolerance applications.

Key Features

• Solid carbide construction for maximum hardness and wear resistance in production drilling
• 135-degree split point for self-centering entry and reduced thrust force
• Screw machine length body provides rigidity and minimizes deflection on small-diameter holes
• Bright, uncoated finish maintains precise diameter tolerance without coating buildup
• Right-hand cutting direction with regular spiral flute for standard chip evacuation
• 2-flute configuration optimized for chip clearance in short-length drilling

Compatibility

Designed as an OEM-style replacement or standard tooling option for screw machine length drill bit applications requiring a wire gauge size 57 solid carbide bit with a straight cylindrical shank.

Installation Notes

Installation of this bit is performed by machinists in machine shop environments. Secure the straight cylindrical shank fully in a collet or drill chuck rated for small-diameter tooling before use. Verify spindle speed and feed rate are appropriate for solid carbide tooling and the workpiece material before engaging the cut. Do not run solid carbide tooling in machines with excessive spindle runout, as carbide is brittle and susceptible to fracture under lateral loading.