Cleveland C14526 Screw Machine Drill Bit 51 Cobalt

Product Description

The CLEVELAND C14526 is a cobalt screw machine length drill bit in wire size 51, measuring 0.0670 inches in diameter with an overall length of 1-11/16 inches. Built to M42 cobalt steel standards, it features a 135-degree split point with web thinning for reduced thrust and faster penetration on tough materials. The straight-cylindrical shank and two-flute spiral design provide stable tool holding and efficient chip evacuation. This is a heavy-duty grade bit conforming to ASME B94.11M and DIN 1897 specifications, suited for production drilling in alloy steels and aluminum. Licensed machinists, tool and die technicians, and metalworking shops typically use this bit in screw machine or CNC drilling operations.

The C14526 is designed for short-length production drilling where rigidity and accuracy matter. Its screw machine length body reduces deflection compared to jobber-length bits, making it well suited for drilling in alloy steel, aluminum, and similar materials in high-cycle production environments. The cobalt construction resists heat buildup during extended runs, and the web-thinned split point self-centers on the workpiece, reducing the need for a center punch on many setups.

Key Features

• Wire size 51 diameter: 0.0670 inches with a tight tolerance of +0.0000 to -0.0005 inches
• M42 cobalt steel construction for heat resistance in high-cycle production drilling
• 135-degree split point with web thinning reduces thrust and aids self-centering
• Screw machine length body (1-11/16 inches OAL) provides rigidity and reduces deflection
• Right-hand cut, two-flute spiral design promotes efficient chip evacuation
• Conforms to ASME B94.11M and DIN 1897 standards

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for screw machine, CNC, and bench-press drilling applications in alloy steel and aluminum workpieces where wire size 51 diameter is specified.

Installation Notes

A licensed machinist or metalworking technician should install this bit into a compatible chuck rated for the 0.0670-inch shank diameter. Ensure the machine spindle is fully stopped and the chuck is properly tightened before starting any drilling cycle. Coolant-through is not supported on this bit, so apply cutting fluid externally when drilling alloy steels to manage heat. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed settings.