Cleveland C14243 Cobalt Screw Machine Drill Bit Wire 3

Product Description

The CLEVELAND C14243 is a cobalt screw machine length drill bit designed for high-performance drilling in tough materials. Built to the Series 2175 specification, this wire gauge #3 bit measures 0.2130 inches in diameter with an overall length of 2.375 inches and a parabolic flute length of 1.25 inches. The 135-degree split point reduces walking and allows the bit to self-center on entry without a pilot hole. Web thinning lowers thrust requirements and improves chip evacuation. This bit is intended for machinists, tool-and-die tradespeople, and metalworking professionals who need a short, rigid bit profile for drill press, lathe, or CNC applications.

The C14243 is rated for right-hand cutting in alloy steel and aluminum, making it a practical choice for production environments where screw machine length rigidity reduces deflection in interrupted cuts or deep-hole entry. Its straight-cylindrical shank fits standard 3-jaw chucks and collet holders without modification. The shorter overall length compared to jobber-length bits provides added stability in tight setups or when working close to a fixture or workpiece edge.

Key Features

• Wire gauge #3 diameter: 0.2130 inches with a tight tolerance of +0.0000 to -0.0007 inches
• 135-degree split point with web thinning for reduced thrust and self-starting entry
• Parabolic flute geometry promotes efficient chip clearance in aluminum and alloy materials
• M42 cobalt material grade for heat resistance in hard or abrasive workpiece materials
• Screw machine length profile (2.375 inches OAL) delivers rigidity and minimal runout
• Meets ASME B94.11M and ANSI specification designations for dimensional accuracy

Compatibility

Designed as a screw machine length replacement or production drill bit suited for alloy steel and aluminum workpieces; compatible with standard straight-cylindrical shank chucks and collet systems that accept 0.2130-inch shank diameters.

Installation Notes

This bit is installed by machinists and metalworking technicians in drill presses, lathes, turret machines, and CNC setups. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the straight-cylindrical shank fully into the chuck or collet and verify runout before drilling. Do not exceed the recommended surface footage for M42 cobalt in the material being cut, and use appropriate cutting fluid for alloy steel applications to preserve edge life.