Cleveland C14817 Screw Machine Drill Bit 0.4331 in Cobalt

Product Description

The CLEVELAND C14817 is a cobalt screw machine length drill bit designed for high-speed material removal in demanding production and maintenance applications. Built to a 0.4331-inch diameter with a 135-degree split point, the C14817 starts on contact without a center punch and reduces walking on hard or irregular surfaces. The web-thinned design lowers thrust requirements, making it well suited for drilling alloy steels and aluminum. Overall length is 3.74 inches with a 1.85-inch flute length, keeping the tool compact and rigid for stub-length work. It conforms to ASME B94.11M and DIN 1897 standards and carries an M42 cobalt grade designation for heavy-duty service.

This drill bit is intended for use in machine shop environments, maintenance repair operations, and fabrication settings where shorter drill lengths provide better rigidity and reduced deflection. The straight-cylindrical shank seats in standard drill chucks and collet holders. Primary target workpiece materials include alloy steels and aluminum, making it appropriate for HVAC sheet metal, structural steel components, and general metal fabrication tasks handled by trade professionals.

Key Features

• Cobalt M42 tool material for heat resistance and extended tool life in alloy and aluminum applications
• 135-degree split point for self-centering entry and reduced thrust
• Web-thinned parallel web construction lowers drilling force requirements
• Screw machine (stub) length at 3.74 inches overall provides maximum rigidity and minimal runout
• Right-hand cut with regular spiral fluting for efficient chip evacuation
• Diameter tolerance of +0.0000 to -0.0010 inches ensures consistent hole sizing
• Conforms to ASME B94.11M and DIN 1897 specifications

Compatibility

Designed as a heavy-duty OEM-style replacement or production drill bit for use in standard drill chucks and collet holders accepting a 0.4331-inch straight-cylindrical shank, in applications targeting alloy steel and aluminum workpieces.

Installation Notes

Installation should be performed by qualified machinists or trade professionals familiar with rotating cutting tools. Secure the shank fully in the chuck or collet before operation and verify runout before cutting. Always wear appropriate eye protection and follow applicable machine guarding requirements. Do not exceed the rated speed range for the workpiece material being drilled.