Cleveland C15054 Screw Machine Drill Bit 1/8 in Cobalt

Product Description

The CLEVELAND C15054 is a screw machine length cobalt drill bit designed for high-speed drilling in tough materials. Built from M42 cobalt high-speed steel, it features a 135-degree split point that starts on contact without a center punch, reducing walking and improving hole accuracy. The parabolic flute geometry promotes efficient chip evacuation during drilling. At 1.875 inches overall length with a 0.875 inch flute length, this stub-length bit delivers added rigidity compared to jobber-length drills, making it well suited for production drilling and CNC applications where deflection must be minimized.

This bit is intended for drilling alloy steels, aluminum, and similar workpiece materials in production machining, maintenance, and fabrication environments. The screw machine length format is a common choice on drill presses, lathes, and machining centers where a shorter, stiffer tool is required. The straight cylindrical shank fits standard drill chucks and collet holders. It is sold individually and is appropriate for both manual and automated drilling setups where hole-to-location tolerance is critical.

Key Features

• M42 cobalt steel construction for heat resistance in hard and abrasive materials
• 135-degree split point starts on contact and reduces thrust force
• Parabolic flute design improves chip flow and reduces clogging
• Screw machine (stub) length provides extra rigidity and reduced deflection
• Web-thinned parallel web for lower cutting resistance
• Meets ASME B94.11M and ANSI specification standards

Compatibility

Designed as an OEM-style replacement or direct-use screw machine drill bit for standard drill chucks and collet holders accepting a 0.125 inch straight cylindrical shank, consistent with ASME B94.11M Series 2175A specifications.

Installation Notes

Installation is performed by machinists and maintenance technicians using standard drill press, lathe, or CNC machining equipment. Secure the shank fully in the chuck or collet before operation and verify runout before drilling. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality. Follow shop safety protocols and applicable OSHA machine guarding requirements when operating rotary cutting tools.