Cleveland C14259 Cobalt Screw Machine Drill Bit Size 19

Product Description

The CLEVELAND C14259 is a cobalt screw machine length drill bit designed for high-performance drilling in tough materials. Built to ASME B94.11M standards, this bit features a 135-degree split point that reduces walking and allows for faster penetration without a center punch. The parabolic flute geometry improves chip evacuation, making it well suited for deep-hole drilling and interrupted cuts. At wire size 19 (0.1660 inches), it fills a common need in precision metalworking and fabrication. The straight-cylindrical shank fits standard drill chucks without modification. Intended for use by machinists, maintenance mechanics, and metalworking tradespeople.

This bit is engineered for drilling alloy steels and aluminum in production and job-shop environments where heat buildup and tool wear are common concerns. The M42 cobalt material grade provides elevated red hardness, allowing the bit to retain its cutting edge at higher temperatures compared to standard HSS tooling. The screw machine length profile keeps the bit rigid in tight workspaces or when drilling on a drill press or CNC machine. The web-thinned, parallel-web construction reduces thrust and extends tool life in repetitive drilling applications.

Key Features

• Wire size 19 diameter: 0.1660 inches with a tight tolerance of +0.0000 to -0.0007 inches
• 135-degree split point reduces drill walking and lowers required thrust force
• M42 cobalt construction handles heat-generating alloy and aluminum workpieces
• Parabolic flute design promotes efficient chip clearing in deeper holes
• Web-thinned parallel web reduces cutting resistance and prolongs edge life
• Meets ASME B94.11M standard for screw machine length drill bits

Compatibility

Designed as an OEM-style replacement or direct substitute for screw machine length drill bits in wire size 19 applications across standard drill press, hand drill, and CNC spindle setups accepting straight-cylindrical shanks of 0.1660 inches.

Installation Notes

Installation of drill bits should be performed by qualified machinists or metalworking tradespeople following applicable shop safety procedures. Secure the straight-cylindrical shank fully in the chuck and verify concentricity before operation. Ensure the machine is powered off and de-energized before changing tooling. Do not use this bit on materials outside its rated workpiece categories, as doing so may cause premature wear or bit failure.