Cleveland C14513 Screw Machine Drill Bit 55 Cobalt

Product Description

The CLEVELAND C14513 is a screw machine length drill bit designed for high-speed drilling in demanding industrial and trade applications. Built from M42 cobalt steel, this bit handles tough workpiece materials including alloy steel and aluminum without sacrificing edge integrity. The 135-degree split point reduces walking at entry and lowers thrust force, making it well suited for work on harder or layered materials. At 0.0520 inches (wire size 55) in diameter with an overall length of 1.625 inches, it fits compact drill chucks and close-tolerance fixturing. Two spiral flutes clear chips efficiently throughout the cut. This bit meets ASME B94.11M and DIN 1897 standards and is rated heavy duty for production-level use.

The C14513 is appropriate for metalworking shops, maintenance and repair operations, and precision fabrication environments where small-diameter drilling in alloy or aluminum is routine. The screw machine length profile — shorter than jobber length — provides added rigidity and reduced deflection in drill press, CNC, and hand-held power tool setups. It is commonly used when hole depth is shallow and positional accuracy matters. The parallel web configuration and web-thinned geometry support cleaner entry in ferrous and non-ferrous metals alike.

Key Features

• M42 cobalt construction for heat and wear resistance in alloy and aluminum drilling
• 135-degree split point reduces thrust and minimizes bit walking at entry
• Screw machine (stub) length provides greater rigidity than jobber bits of the same diameter
• Web-thinned, parallel web geometry for improved chip evacuation and reduced torque
• Straight-cylindrical shank fits standard drill chucks without adapters
• Meets ASME B94.11M and DIN 1897 dimensional and performance standards

Compatibility

Designed as a standard screw machine length drill bit for use in drill presses, CNC machining centers, and hand-held power tools equipped with chucks accepting a 0.0520-inch straight-cylindrical shank. Primary workpiece materials listed by the manufacturer are alloy steel and aluminum.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade professionals familiar with small-diameter tooling. Secure the straight-cylindrical shank fully in the chuck and verify concentricity before operation to prevent deflection or breakage at this diameter. Always use appropriate cutting fluid or coolant for the workpiece material, and operate at manufacturer-recommended spindle speeds for 0.0520-inch cobalt tooling. Inspect the bit before each use — cobalt bits at this diameter are susceptible to breakage if chipped or improperly seated.