Cleveland C14646 Screw Machine Drill Bit Letter E Cobalt

Product Description

The CLEVELAND C14646 is a screw machine length drill bit designed for high-production drilling in metal fabrication, machining, and maintenance applications. Built from M42 cobalt high-speed steel, it holds up under the heat generated by hard and abrasive materials where standard HSS bits fail. The bit measures 0.25 inches in diameter (Letter E) with an overall length of 2.5 inches, making it suited for short-reach, rigid setups in drill presses, CNC machines, and hand-held equipment. The 135-degree split point starts on contact without a center punch, reducing walking and improving hole accuracy.

This bit is intended for production and maintenance environments where consistent hole quality in tough materials is required. Primary workpiece materials include alloy steel and aluminum. The screw machine length body keeps the bit compact and stiff, reducing deflection in close-tolerance work. It is commonly used by machinists, tool-and-die workers, and maintenance technicians working in industrial and commercial settings.

Key Features

• M42 cobalt construction for heat resistance in alloy steel and aluminum drilling
• 135-degree split point starts on contact, no center punch required
• Web-thinned design reduces thrust force and improves chip evacuation
• Screw machine length body minimizes deflection in rigid setups
• Right-hand cut with 2-flute regular spiral for standard chip flow
• Meets ASME B94.11M and DIN 1897 standards for consistent dimensional quality

Compatibility

Designed as an OEM-style replacement or direct-use bit for drill presses, CNC drilling operations, and hand-held equipment requiring a 0.25-inch straight-cylindrical shank screw machine length drill bit.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with drill press and rotating tool safety procedures. Secure the straight-cylindrical shank firmly in the chuck before operation and verify runout before production drilling. Always power down and de-energize the machine before changing bits. Use appropriate cutting fluid for the workpiece material to extend bit life and maintain hole quality.