Cleveland C14221 Screw Machine Drill Bit 25/64 in Cobalt

Product Description

The CLEVELAND C14221 is a screw machine length drill bit designed for high-production drilling in tough materials. Built from M42 cobalt high-speed steel, it delivers heat and wear resistance in applications where standard HSS bits fall short. The 135-degree split point reduces walking and lowers thrust requirements at entry, making it well suited for hard alloys and interrupted cuts. Overall length is 3.25 inches, with a 1.875-inch flute length, giving it a compact, rigid profile that minimizes deflection in short-stroke drilling operations. Licensed tradespeople and machining professionals install this bit in drill presses, CNC machining centers, and manual screw machines.

This drill bit is built for drilling alloy steel, aluminum, and similarly demanding workpiece materials. The screw machine length format is a standard choice in production environments where rigidity matters more than reach. The parabolic flute geometry promotes efficient chip evacuation, reducing heat buildup during continuous drilling cycles. It meets ASME B94.11M and ANSI specification designation standards, making it appropriate for controlled-tolerance work in shop and field settings.

Key Features

• M42 cobalt construction for extended tool life in hard and abrasive materials
• 135-degree split point reduces entry thrust and minimizes bit walking
• Parabolic flute geometry promotes fast, efficient chip evacuation
• Web-thinned, parallel web configuration reduces cutting resistance
• Straight-cylindrical shank fits standard drill chucks without adapters
• Diameter tolerance held to +0.0000 to -0.0010 inches for precision fitment

Compatibility

Designed as an OEM-style replacement or standard supply drill bit for use in screw machines, drill presses, and CNC machining centers requiring a straight-cylindrical shank bit in the 0.3500 to 0.4000 inch diameter range.

Installation Notes

This bit is installed by machinists and tool-and-die professionals in machine shop environments. Secure the straight-cylindrical shank firmly in a properly sized drill chuck before operation and verify chuck key is removed before powering the spindle. Follow shop safety protocols and applicable OSHA machine guarding requirements when operating drill presses or CNC equipment. Do not exceed the recommended feed and speed ratings for the workpiece material being drilled.