Cleveland C15104 Cobalt Screw Machine Drill Bit No. 14

Product Description

The CLEVELAND C15104 is a screw machine length drill bit designed for fast, accurate drilling in demanding shop and field environments. Built from M42 cobalt high-speed steel, this bit handles alloy steels, aluminum, and other materials that wear out standard HSS tooling quickly. The 135-degree split point starts on contact without a center punch and reduces walking on hard or slick surfaces. At 2-3/16 inches overall length, the stub-style screw machine format fits standard drill chucks and tight-clearance fixturing where jobber-length bits cannot reach or would flex under load. Two parabolic flutes evacuate chips efficiently and support higher feed rates.

The C15104 is suited for production drilling, maintenance, and repair work in machine shops, fabrication facilities, and industrial service environments. It is a common choice when drilling through alloy steel fastener stock, structural plate, aluminum extrusions, and similar materials where tool life and hole tolerance are priorities. The straight-cylindrical shank seats directly in standard drill chucks and quick-change holders without adapters.

Key Features

• M42 cobalt steel construction for extended tool life in hard and abrasive materials
• 135-degree split point for self-centering starts and reduced thrust force
• Parabolic flute geometry promotes efficient chip evacuation at higher feed rates
• Web-thinned, parallel web configuration reduces cutting resistance
• Screw machine (stub) length provides rigidity and fits tight-clearance setups
• Diameter tolerance of +0.0000 to -0.0007 inches for consistent hole sizing
• Meets ASME B94.11M and ANSI specification requirements

Compatibility

Designed as a direct-fit replacement or production drill in any application requiring a No. 14 wire gauge (0.182 inch) straight-shank screw machine length drill bit. Compatible with standard drill chucks and quick-change holders accepting a 0.182-inch straight-cylindrical shank.

Installation Notes

Installation and use should be performed by machinists, maintenance technicians, or qualified tradespeople familiar with rotary cutting tools and drill press or hand-drill operation. Secure the shank fully in the chuck and verify runout before drilling. Always use appropriate cutting fluid for the workpiece material to maximize tool life and hole quality. Wear proper eye protection and secure the workpiece firmly before applying feed pressure.