Cleveland C14217 21/64 in Cobalt Screw Machine Drill Bit

Product Description

The CLEVELAND C14217 is a screw machine length drill bit designed for high-performance drilling in demanding shop and field applications. Built from M42 cobalt tool steel, this bit handles hard and abrasive materials including alloy steels and aluminum where standard high-speed steel bits lose edge quickly. The 135-degree split point geometry reduces walking and decreases the thrust required to start a hole, making it well-suited for production drilling without a center punch. The parabolic flute design evacuates chips efficiently, and the web-thinned, parallel web configuration keeps cutting action clean through the full depth of cut. Overall length is 2-15/16 inches with a 1-11/16-inch flute length.

The C14217 is a heavy-duty stub-length bit intended for use in CNC machining centers, drill presses, and hand-held power tools where a shorter, stiffer bit reduces deflection and improves hole accuracy. Primary workpiece materials include alloy steel and aluminum. The straight cylindrical shank at 0.3281 inches in diameter fits standard 3-jaw chucks without adaptation. This bit is a practical choice for machinists, tool and die workers, pipefitters, and industrial maintenance technicians who drill into hard stock regularly.

Key Features

• M42 cobalt tool steel construction for extended tool life in hard and abrasive materials
• 135-degree split point reduces bit walking and lowers feed force required at hole entry
• Parabolic flute geometry promotes fast, efficient chip evacuation during deep cuts
• Web-thinned parallel web reduces cutting resistance and heat buildup
• Screw machine (stub) length provides added rigidity and reduced deflection versus jobber-length bits
• Meets ASME B94.11M standard; diameter tolerance held to +0.0000 to -0.0010 inches

Compatibility

Designed as a direct-fit replacement for any 21/64-inch straight-shank screw machine length drill bit application. Compatible with standard 3-jaw drill chucks and collet systems accepting a 0.3281-inch shank diameter. Suitable for use in alloy steel and aluminum workpieces per Series 2175 design parameters.

Installation Notes

Installation of this bit should be performed by a qualified machinist or maintenance technician. Secure the straight cylindrical shank fully in the chuck and verify runout before drilling. Always wear appropriate eye protection and ensure the workpiece is clamped or fixtured securely before starting the spindle. Use cutting fluid appropriate for the workpiece material to extend bit life and maintain hole quality.